CT positioning puncture angle guide

Abstract

The present invention relates to a CT positioning puncture angle guide, including an angle adjustment mechanism and a needle clamping mechanism. The angle adjustment mechanism includes a main rod, a movable rod and a connecting rod. The movable rod is inserted in the main rod. The movable rod is rotatably connected to one end of the needle clamping mechanism through the connecting rod. The other end of the needle clamping mechanism is rotatably connected to one end of the main rod. A sliding column is connected to the movable rod. A sliding groove is provided on the main rod. The sliding column can slide along the sliding groove. The outer sleeve of the main rod is provided with a spiral body that rotates relative to it. The sliding column penetrates the spiral body. By rotating the spiral body, the spiral body can push the sliding column to slide along the sliding groove while rotating, so that the movable rod slides along the axis direction of the main rod, and drives the connecting rod and the needle clamping mechanism to move in turn to achieve angle adjustment of the needle clamping mechanism. The present invention has a simple structure, realizes cross-layer operation, has high flexibility, is convenient for surgical operation, and improves the accuracy of puncture position.

Description

Technical Field

[0001] The invention relates to the technical field of CT puncture, and in particular to a CT positioning puncture angle guide. Background Art

[0002] Currently, when medical staff perform CT-localized puncture operations, they need to first determine the location of the lesion through CT, and then use the doctor's clinical experience to determine the required needle point position and angle. Finally, the medical staff uses a puncture guide to perform the puncture operation.

[0003] Existing angle puncture guides generally use a flat template structure or a 3D printed template structure to guide puncture. Among them, the flat template structure is provided with multiple puncture holes, and the puncture needle is inserted into the lesion area through the puncture holes. Since the flat template structure is in a flat shape, when guiding the puncture, the puncture needle can only be inserted vertically into the lesion area, and cross-layer operation cannot be achieved. In addition, the flat template structure is a whole, and it can only be removed after the treatment operation is completed in all positions, which has poor flexibility. The 3D printed template structure is to perform a 3D scan of the lesion part of the human body before the patient undergoes CT puncture surgery to print out a template relative to the lesion position, that is, to predetermine the puncture position and angle. Although the flexibility is relatively high compared to the flat template structure, it is inevitable that the patient's lying position is different from the lying position during the 3D scan in the actual operation, and a series of changes in the patient's body occur during the waiting period for the operation, which easily leads to deviations between the puncture position and angle on the 3D printed template structure and the actual, low accuracy, and poor flexibility. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a CT positioning puncture angle guide which has a simple structure, realizes cross-layer operation, has high flexibility, is convenient for surgical operation, and improves the accuracy of puncture position.

[0005] The present invention provides a CT positioning puncture angle guide, comprising an angle adjustment mechanism and a needle clamping mechanism. The angle adjustment mechanism comprises a main rod, a movable rod and a connecting rod. The movable rod is inserted in the main rod, the movable rod is rotatably connected to one end of the needle clamping mechanism through the connecting rod, and the other end of the needle clamping mechanism is rotatably connected to one end of the main rod. The movable rod can slide along the axis direction of the main rod, and drive the connecting rod and the needle clamping mechanism to move in turn, so as to realize the angle adjustment of the needle clamping mechanism.

[0006] Preferably, a sliding column is connected to the movable rod, a sliding groove is provided on the main rod, and the sliding column can slide along the sliding groove.

[0007] In any of the above schemes, preferably, the sliding column includes a first sliding column and a second sliding column, and the first sliding column and the second sliding column are arranged on the moving rod opposite to each other.

[0008] In any of the above schemes, preferably, the outer portion of the main rod is sleeved with a spiral body that rotates relatively thereto, and the sliding column passes through the spiral body, and the sliding column can slide along the sliding groove by rotating the spiral body.

[0009] In any of the above solutions, preferably, the other end of the main rod is fixedly connected to a mounting seat.

[0010] In any of the above schemes, preferably, a sleeve is provided on the outside of the spiral body, one end of the sleeve is fixed with a limiting ring, the limiting ring is provided on the main rod and is set as a non-circular structure, and the other end of the sleeve rotates relative to the end of the spiral body.

[0011] In any of the above solutions, preferably, the connecting rod is configured as an arc-shaped structure.

[0012] In any of the above schemes, preferably, the needle clamping mechanism includes a needle clamp seat and a needle clamp, the needle clamp seat is provided with a through clamping groove along its axial direction, the needle clamp seat is provided with a mounting hole connected to the clamping groove perpendicular to its axial direction, the needle clamp is provided with a clamping column perpendicular to its axial direction, the clamping column passes through the mounting hole to enable the needle clamp to be matched and connected with the clamping groove, the needle clamp is provided with a through needle clamp hole along its axial direction, and a puncture needle is provided in the needle clamp hole.

[0013] In any of the above schemes, preferably, the cross-section of the needle clamp is circular, and the cross-sectional diameter of the needle clamp gradually decreases from the middle to the end, and the clamping column includes a first clamping column and a second clamping column that are spaced and symmetrically arranged, and the first clamping column and the second clamping column are provided with a limit piece.

[0014] In any of the above schemes, preferably, grooves communicating with the clamping groove are provided on both sides of the clamping groove on the needle clamp seat.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] 1. During the puncture operation, by adjusting the angle of the puncture needle, it is possible to combine the shape of the lesion and the structure of the human body, avoid key parts, optimize the needle insertion path, and achieve cross-layer operation. It has high flexibility, facilitates surgical operation, and improves the accuracy of the puncture position, thereby ensuring the quality of the operation.

[0017] 2. During the surgical operation, the assembly and disassembly of the puncture needle is operated from its side, which facilitates the installation and separation of the puncture needle and the needle clamping mechanism, so that each puncture needle can be adjusted individually and can be flexibly adjusted according to actual surgical needs. There is no need to wait until the overall treatment is completed before withdrawing the needle, which improves the flexibility of surgical operations and improves safety.

[0018] The CT positioning puncture angle guide of the present invention is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An exploded view of the CT positioning puncture angle guide of the present invention;

[0020] Figure 2 This is an assembly diagram of the CT positioning puncture angle guide of the present invention;

[0021] Figure 3 This is an internal structural diagram of the CT positioning puncture angle guide of the present invention;

[0022] Figure 4 This is a structural diagram of the needle clamp seat in the CT positioning puncture angle guide of the present invention;

[0023] Figure 5 for Figure 4 The main view;

[0024] Figure 6 This is a structural diagram of the needle clamp in the CT positioning puncture angle guide of the present invention;

[0025] Figure 7 for Figure 6 A top view of

[0026] Among them: 1. needle clamp seat; 101. clamping groove; 102. groove; 103. mounting hole; 2. needle clamp; 201. needle clamp hole; 202. first clamping column; 203. second clamping column; 3. connecting rod; 4. sleeve; 5. main rod; 501. limiting ring; 502. sliding groove; 6. first sliding column; 7. second sliding column; 8. fastener; 9. moving rod; 10. spiral body; 11. mounting seat; 12. limiting piece. DETAILED DESCRIPTION

[0027] like Figure 1-Figure 3 As shown, the present invention provides a CT positioning puncture angle guide, including an angle adjustment mechanism and a needle clamping mechanism. The angle adjustment mechanism includes a main rod 5, a movable rod 9 and a connecting rod 3. The movable rod 9 is inserted in the main rod 5. The movable rod 9 is rotatably connected to one end of the needle clamping mechanism through the connecting rod 3, and the other end of the needle clamping mechanism is rotatably connected to one end of the main rod 5. A sliding column is connected to the movable rod 9, and a sliding groove 502 is provided on the main rod 5. The sliding column can slide along the sliding groove 502. The outside of the main rod 5 is sleeved with a spiral body 10 that rotates relative to it, and the sliding column passes through the spiral body 10.

[0028] Before the guided puncture is performed, the puncture needle is pre-installed into the needle clamping mechanism, and then the angle is adjusted by the angle adjustment mechanism before the puncture is performed. Specifically, by rotating the spiral body 10, the spiral body 10 can push the sliding column to slide along the sliding groove 502 while rotating, so that the movable rod 9 slides along the axis direction of the main rod 5, and in turn drives the connecting rod 3 and the needle clamping mechanism to move, so as to achieve the angle adjustment of the needle clamping mechanism.

[0029] The CT-positioned puncture angle guide of this embodiment can adjust the angle of the puncture needle in combination with the shape of the lesion and the human body structure to avoid key parts, optimize the needle insertion path, and achieve cross-layer operation. It has high flexibility, facilitates surgical operations, and improves the accuracy of the puncture position, thereby ensuring the quality of the operation.

[0030] In addition, since the pitches of the spiral body 10 are the same, the angle of the needle clamping mechanism can be accurately adjusted by controlling the number of rotations of the spiral body 10.

[0031] Further, the slide post includes a first slide post 6 and a second slide post 7, and the first slide post 6 and the second slide post 7 are arranged on the movable rod 9. The movable rod 9 is provided with fixing holes respectively matched with the first slide post 6 and the second slide post 7, and the fixing holes respectively corresponding to the first slide post 6 and the second slide post 7 are not connected to each other.

[0032] Furthermore, a sleeve 4 is sleeved on the outside of the spiral body 10 , one end of the sleeve 4 is fixed with a limiting ring 501 , the limiting ring 501 is sleeved on the main rod 5 and is set as a non-circular structure, and the other end of the sleeve 4 rotates relative to the end of the spiral body 10 .

[0033] In this structure, the setting of the sleeve 4 covers the spiral body 10, the slide groove 502 and the slide column, which has a protective effect on the spiral body 10 and the slide column, and can prevent dust from entering the slide groove 502. In addition, the setting of the limit ring 501 ensures that the sleeve 4 and the main rod 5 are relatively fixed to prevent the sleeve 4 from rotating relative to the main rod 5.

[0034] Furthermore, the other end of the main rod 5 is fixedly connected with a mounting seat 11, and the mounting seat 11 is connected to the fixing mechanism to fix the CT positioning puncture angle guide. The mounting seat 11 is fixed to the main rod 5 by a fastener 8.

[0035] Furthermore, the connecting rod 3 is configured as an arc-shaped structure.

[0036] Further, such as Figure 4-Figure 7 As shown, the needle clamping mechanism includes a needle clamp seat 1 and a needle clamp 2. The needle clamp seat 1 is provided with a through clamping groove 101 along its axial direction. The needle clamp seat 1 is provided with a mounting hole 103 connected with the clamping groove 101 perpendicular to its axial direction. The needle clamp 2 is provided with a clamping column perpendicular to its axial direction. The clamping column passes through the mounting hole 103 so that the needle clamp 2 is matched and connected with the clamping groove 101. The needle clamp 2 is provided with a through needle clamp hole 201 along its axial direction. A puncture needle is arranged in the needle clamp hole 201. The clamping column includes a first clamping column 202 and a second clamping column 203 that are arranged at intervals and symmetrically. The first clamping column 202 and the second clamping column 203 are respectively set as elastic members.

[0037] When assembling the puncture needle, first fix the puncture needle on the needle clamp hole 201, and then fix the needle clamp 2 to the needle clamp seat 1 through the clamping column. When removing the needle, the operator squeezes the first clamping column 202 and the second clamping column 203 with one hand to deform the first clamping column 202 and the second clamping column 203, and takes the needle clamp 2 with the other hand to separate it from the needle clamp seat 1.

[0038] The needle clamping mechanism of this embodiment can be assembled and disassembled from the side of the puncture needle during the surgical operation, which facilitates the installation and separation of the puncture needle and the needle clamping mechanism, so that each puncture needle can be adjusted individually and can be flexibly adjusted according to actual surgical needs. There is no need to wait until the overall treatment is completed before withdrawing the needle, which improves the flexibility of surgical operations and improves safety.

[0039] Furthermore, a limiting member 12 is provided on the first clamping column 202 and the second clamping column 203 to prevent the needle clamp 2 from falling off from the needle clamp seat 1 .

[0040] Furthermore, the cross section of the needle clamp 2 is circular, and the cross section diameter of the needle clamp 2 gradually decreases from the middle toward the end.

[0041] Furthermore, grooves 102 communicating with the clamping groove 101 are provided on both sides of the needle clamp seat 1 to facilitate operators to take and place the needle clamp 2.

[0042] It should be noted that the CT positioning puncture angle guide of the present invention is not limited to the operation of puncture needles, but can also be applied to biopsy needles, ablation needles, etc. It has strong versatility and a wide range of applications.

[0043] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A CT positioning puncture angle guide, characterized in that: It includes an angle adjustment mechanism and a needle clamping mechanism. The angle adjustment mechanism includes a main rod, a movable rod and a connecting rod. The movable rod is inserted in the main rod. The movable rod is rotatably connected to one end of the needle clamping mechanism through the connecting rod. The other end of the needle clamping mechanism is rotatably connected to one end of the main rod. The movable rod can slide along the axis direction of the main rod, and drive the connecting rod and the needle clamping mechanism to move in turn, so as to achieve angle adjustment of the needle clamping mechanism. The movable rod is connected with a sliding column, and the main rod is provided with a sliding groove, and the sliding column can slide along the sliding groove; The needle clamping mechanism includes a needle clamp seat and a needle clamp. The needle clamp seat is provided with a through clamping groove along its axial direction. The needle clamp seat is provided with a mounting hole connected to the clamping groove perpendicular to its axial direction. The needle clamp is provided with a clamping column perpendicular to its axial direction. The clamping column passes through the mounting hole to enable the needle clamp to be matched and connected with the clamping groove. The needle clamp is provided with a through needle clamp hole along its axial direction, and a puncture needle is arranged in the needle clamp hole.

2. The CT positioning puncture angle guide according to claim 1, characterized in that: The sliding column comprises a first sliding column and a second sliding column, and the first sliding column and the second sliding column are arranged on the movable rod opposite to each other.

3. The CT positioning puncture angle guide according to claim 1, characterized in that: The outer part of the main rod is sleeved with a spiral body which rotates relatively thereto, and the sliding column passes through the spiral body. By rotating the spiral body, the sliding column can slide along the sliding groove.

4. The CT positioning puncture angle guide according to claim 1, characterized in that: The other end of the main rod is fixedly connected with a mounting seat.

5. The CT positioning puncture angle guide according to claim 3, characterized in that: The outer part of the spiral body is sleeved with a sleeve, one end of the sleeve is fixed with a limiting ring, the limiting ring is sleeved on the main rod and is set as a non-circular structure, and the other end of the sleeve rotates relative to the end of the spiral body.

6. The CT positioning puncture angle guide according to claim 1, characterized in that: The connecting rod is configured as an arc structure.

7. The CT positioning puncture angle guide according to claim 6, characterized in that: The cross section of the needle clamp is circular, and the cross section diameter of the needle clamp gradually decreases from the middle to the end. The clamping column includes a first clamping column and a second clamping column that are spaced and symmetrically arranged, and the first clamping column and the second clamping column are provided with a limit piece.

8. The CT positioning puncture angle guide according to claim 7, characterized in that: The needle clamp seat is provided with grooves communicating with the clamping groove on both sides thereof.

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