CT positioning puncture angle guide

Abstract

The present invention relates to a CT positioning puncture angle guide, comprising an angle adjustment mechanism and a needle clamping mechanism, wherein the angle adjustment mechanism comprises a shell, wherein the outer periphery of the shell is provided with a first guide groove and a second guide groove, wherein a control rod is provided in the first guide groove along which a control rod slides, wherein one end of the control rod passes through the first guide groove and is fixedly connected to a connecting assembly, wherein the connecting assembly rotates relative to the shell, wherein a movable rod and a fixed rod which are parallel to each other and of equal length are also provided on the shell, wherein the movable rod slides along the second guide groove and one end of the movable rod passes through the second guide groove and is fixed to the connecting assembly, wherein one end of the fixed rod is fixed to the shell, and the other ends of the movable rod and the fixed rod are respectively rotatably connected to the two ends of the needle clamping mechanism, and the control rod is arranged in parallel with 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 during the waiting period for the operation may easily lead 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 shell, the outer periphery of the shell is provided with a first guide groove and a second guide groove, a control rod is provided in the first guide groove along which a slide is arranged, one end of the control rod passes through the first guide groove and is fixedly connected to a connecting component, the connecting component rotates relative to the shell, and a movable rod and a fixed rod which are parallel to each other and have equal lengths are further provided on the shell, the movable rod slides along the second guide groove and one end of the movable rod passes through the second guide groove and is fixed to the connecting component, one end of the fixed rod is fixed to the shell, the other ends of the movable rod and the fixed rod are respectively rotatably connected to the two ends of the needle clamping mechanism, and the control rod is arranged in parallel with the needle clamping mechanism.

[0006] Preferably, the connecting assembly includes a connecting column, an upper plate and a lower plate, the upper ends of the connecting column and the movable rod are respectively fixed to the upper plate, the lower ends of the connecting column and the movable rod are respectively fixed to the lower plate, one end of the control rod is fixed to the side of the connecting column, and the upper plate and the lower plate are respectively arranged at the upper and lower parts of the shell and are rotatably connected relative to the shell.

[0007] In any of the above schemes, preferably, a dial is provided above the upper plate, the dial is fixed to the housing, a rotating groove corresponding to the scale is provided on the dial, a pointer sliding along the rotating groove is provided in the rotating groove, and the pointer is fixed on the upper plate.

[0008] Preferably, in any of the above schemes, a cover is provided below the lower plate, the cover is fixed to the housing, an angle sensor is provided between the cover and the lower plate, and the angle sensor is fixed on the cover.

[0009] In any of the above schemes, preferably, an intermediate frame is provided across the center of the shell, the intermediate frame is provided between the first guide groove and the second guide groove, one end of the intermediate frame is provided with a first slot, and one end of the fixing rod is inserted and fixed in the first slot.

[0010] In any of the above schemes, preferably, a second slot is provided at the other end of the intermediate frame, a tail rod is inserted and fixed in the second slot, and the tail rod is connected to the fixing mechanism.

[0011] In any of the above schemes, preferably, the needle clamping mechanism includes a needle clamping seat, a tongue piece, a spring piece and a cover piece, the needle clamping seat is vertically provided with a through first clamping groove, one side of the needle clamping seat is internally provided with a first groove connected with the first clamping groove, the spring piece is arranged in the first groove, the other side of the needle clamping seat is provided with a second groove connected with the first clamping groove and extending to the outside of the needle clamping seat, the tongue piece is clamped in the needle clamping seat, and one side of the tongue piece is in contact with the spring piece, and the other side of the tongue piece is arranged in the second groove, and a cover piece for blocking the tongue piece is also provided in the second groove, and the tongue piece is provided with a second clamping groove running vertically through, and the tongue piece is pushed to squeeze the spring piece to adjust the overlapping area between the first clamping groove and the second clamping groove, thereby realizing the taking and placing of the puncture needle.

[0012] In any of the above solutions, preferably, one side of the tongue piece is configured as an inclined surface relative to one side of the spring piece.

[0013] In any of the above schemes, preferably, a protrusion is provided on the plane of the other side of the tongue piece facing the outside of the needle clamp seat.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] 1. By pulling the control rod to slide along the first guide groove, the control rod transmits the pulling force to the movable rod through the connecting component, so that the movable rod slides along the second guide groove, so that the two ends of the needle clamping mechanism rotate relative to the movable rod and the fixed rod respectively, thereby realizing the angle adjustment of the needle clamping mechanism, which can be combined with the shape of the lesion and the structure of the human body, avoid key parts, optimize the needle insertion path, realize cross-layer operation, have high flexibility, facilitate surgical operation, improve the accuracy of puncture position, and thus ensure the quality of surgery.

[0016] 2. The upper plate rotates relative to the shell under the action of the control rod, thereby driving the pointer on the upper plate to slide along the rotating groove, so that the rotation angle of the control rod can be known, and then the rotation angle of the needle clamping mechanism can be determined, so that the puncture needle can be accurately adjusted to the puncture angle required for the operation. The angle display is intuitive and the control is direct, which improves convenience and safety.

[0017] 3. By adding an angle sensor, a more accurate three-dimensional angle value can be displayed, thereby ensuring the accuracy of the puncture angle of the puncture needle.

[0018] 4. 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.

[0019] 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

[0020] Figure 1 This is a structural diagram of the CT positioning puncture angle guide of the present invention;

[0021] Figure 2 An exploded view of the CT positioning puncture angle guide of the present invention;

[0022] Figure 3 This is a structural diagram of the needle clamping mechanism in the CT positioning puncture angle guide of the present invention;

[0023] Figure 4 An exploded view of the needle clamping mechanism in the CT positioning puncture angle guide of the present invention;

[0024] Figure 5 This is a structural diagram of the needle holder in the CT positioning puncture angle guide of the present invention;

[0025] Wherein: 1. scale plate; 101. rotating groove; 2. upper plate; 201. pointer; 202. upper clamping block; 3. tail rod; 4. shell; 401. first guide groove; 402. second guide groove; 403. middle frame; 4031. first slot; 4032. second slot; 5. lower plate; 6. angle sensor; 7. cover body; 8. movable rod; 9. fixed rod; 10. needle clamping mechanism; 1001. needle clamping seat; 10011. first clamping groove; 10012. first groove; 10013. second groove; 1002. tongue; 10021. inclined surface; 10022. protrusion; 10023. second clamping groove; 1003. spring sheet; 1004. cover sheet; 11. connecting column; 12. control rod. DETAILED DESCRIPTION

[0026] like Figure 1 , Figure 2 As shown, the present invention provides a CT positioning puncture angle guide, including an angle adjustment mechanism and a needle clamping mechanism 10. The angle adjustment mechanism includes a shell 4. The outer periphery of the shell 4 is provided with a first guide groove 401 and a second guide groove 402. The first guide groove 401 is provided with a control rod 12 sliding along the first guide groove 401. One end of the control rod 12 passes through the first guide groove 401 and is fixedly connected to a connecting component. The connecting component rotates relative to the shell 4. The shell 4 is also provided with a movable rod 8 and a fixed rod 9 that are parallel to each other and have equal lengths. The movable rod 8 slides along the second guide groove 402 and one end of the movable rod 8 passes through the second guide groove 402 and is fixed to the connecting component. One end of the fixed rod 9 is fixed to the shell 4. The other ends of the movable rod 8 and the fixed rod 9 are respectively rotatably connected to the two ends of the needle clamping mechanism 10. The control rod 12 is arranged parallel to the needle clamping mechanism 10.

[0027] Before the guided puncture is performed, the puncture needle is pre-installed into the needle clamping mechanism 10, and then the angle is adjusted by the angle adjustment mechanism before the puncture is performed.

[0028] Specifically, by pulling the control rod 12 to slide along the first guide groove 401, the control rod 12 transmits the pulling force to the movable rod 8 through the connecting assembly, so that the movable rod 8 slides along the second guide groove 402, so that the two ends of the needle clamping mechanism 10 rotate relative to the movable rod 8 and the fixed rod 9, respectively, thereby realizing the angle adjustment of the needle clamping mechanism 10. Since the movable rod 8 and the fixed rod 9 are equal in length and parallel, the control rod 12 is parallel to the needle clamping mechanism 10, so that the two ends of the movable rod 8 and the fixed rod 9 respectively form a parallelogram structure between the needle clamping mechanism 10 and the housing 4, so the sliding angle of the control rod 12 along the first guide groove 401 is consistent with the rotation angle of the needle clamping mechanism 10, and thus the rotation angle of the needle clamping mechanism 10 can be determined by pulling the angle of the control rod 12.

[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] Further, the connection assembly includes a connection column 11, an upper plate 2 and a lower plate 5, the upper ends of the connection column 11 and the movable rod 8 are respectively fixed to the upper plate 2, the lower ends of the connection column 11 and the movable rod 8 are respectively fixed to the lower plate 5, one end of the control rod 12 is fixed to the side of the connection column 11, and the upper plate 2 and the lower plate 5 are respectively arranged at the upper and lower parts of the housing 4 and are rotatably connected relative to the housing 4. Among them, the upper end of the connection column 11 is provided with a first card slot, the lower part of the upper plate 2 is provided with an upper card block 202 that is matched and connected with the first card slot, the lower end of the connection column 11 is provided with a second card slot, the upper part of the lower plate 5 is provided with a lower card block that is matched and connected with the second card slot, the side of the connection column 11 is provided with a third card slot, and one end of the control rod 12 is matched and connected with the third card slot. The upper and lower ends of the movable rod 8 are respectively fixed to the upper plate 2 and the lower plate 5 by bolts.

[0031] Specifically, by pulling the control rod 12, the control rod 12 drives the upper plate 2 and the lower plate 5 to rotate relative to the shell 4 through the connecting column 11, thereby driving the movable rod 8 to slide along the second guide groove 402, so that the two ends of the needle clamping mechanism 10 rotate relative to the movable rod 8 and the fixed rod 9 respectively, thereby realizing the angle adjustment of the needle clamping mechanism 10.

[0032] Furthermore, a scale plate 1 is provided above the upper plate 2, the scale plate 1 is fixed to the housing 4, a rotating groove 101 corresponding to the scale is provided on the scale plate 1, a pointer 201 sliding along the rotating groove 101 is provided in the rotating groove 101, and the pointer 201 is fixed to the upper plate 2. The upper plate 2 rotates relative to the housing 4 under the action of the control rod 12, thereby driving the pointer 201 on the upper plate 2 to slide along the rotating groove 101, so that the angle of rotation of the control rod 12 can be known, and then the angle of rotation of the needle clamping mechanism 10 can be determined, so that the puncture needle can be accurately adjusted to the puncture angle required for the operation, the angle display is intuitive, the control is direct, and the convenience and safety are improved.

[0033] Furthermore, a cover body 7 is provided below the lower plate 5, the cover body 7 is fixed to the housing 4, an angle sensor 6 is provided between the cover body 7 and the lower plate 5, and the angle sensor 6 is fixed to the cover body 7. The angle sensor 6 is electrically connected to the controller. By adding the angle sensor 6, a more accurate three-dimensional angle value can be displayed, thereby ensuring the accuracy of the puncture angle of the puncture needle.

[0034] Furthermore, an intermediate frame 403 is disposed across the center of the housing 4, and the intermediate frame 403 is disposed between the first guide groove 401 and the second guide groove 402. A first slot 4031 is disposed at one end of the intermediate frame 403, and one end of the fixing rod 9 is inserted and fixed in the first slot 4031. A second slot 4032 is disposed at the other end of the intermediate frame 403, and a tail rod 3 is inserted and fixed in the second slot 4032, and the tail rod 3 is connected to the fixing mechanism to fix the CT positioning puncture angle guide.

[0035] like Figure 3 , Figure 4 , Figure 5 As shown, the needle clamping mechanism 10 includes a needle clamping seat 1001, a tongue piece 1002, a spring piece 1003 and a cover piece 1004. The needle clamping seat 1001 is vertically provided with a first clamping groove 10011, and one side of the needle clamping seat 1001 is provided with a first groove 10012 connected to the first clamping groove 10011. The spring piece 1003 is arranged in the first groove 10012. The other side is provided with a second groove 10013 which is connected with the first clamping groove 10011 and extends to the outside of the needle clamping seat 1001, the tongue 1002 is clamped in the needle clamping seat 1001, and one side of the tongue 1002 is in contact with the spring sheet 1003, the other side of the tongue 1002 is arranged in the second groove 10013, and the second groove 10013 is also provided with a cover sheet 1004 for blocking the tongue 1002, and the tongue 1002 is provided with a second clamping groove 10023 which passes vertically therethrough, and the tongue 1002 is pushed so that the spring sheet 1003 is squeezed to adjust the overlapping area between the first clamping groove 10011 and the second clamping groove 10023, thereby realizing the taking and placing of the puncture needle.

[0036] Specifically, when assembling the puncture needle, the tongue piece 1002 is pushed, and the tongue piece 1002 squeezes the spring piece 1003 to increase the overlap area between the first clamping groove 10011 and the second clamping groove 10023, and the puncture needle is introduced into the second clamping groove 10023 through the tongue piece 1002, and then the tongue piece 1002 is released, the spring piece 1003 is reset, and the overlap area between the first clamping groove 10011 and the second clamping groove 10023 is reduced, so as to realize the assembly and fixation of the puncture needle. When disassembling the puncture needle, repeat the above operation to take out the puncture needle.

[0037] The needle clamping mechanism 10 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 10, so that each puncture needle can be adjusted individually and can be flexibly adjusted according to actual surgical needs without waiting for the overall treatment to be completed before withdrawing the needle, thereby improving the flexibility of surgical operations and enhancing safety.

[0038] Furthermore, one side of the tongue piece 1002 relative to one side of the spring piece 1003 is configured as an inclined surface 10021 to facilitate the introduction of the puncture needle.

[0039] Furthermore, a protrusion 10022 is provided on the plane of the other side of the tongue piece 1002 facing the outside of the needle holder 1001 to facilitate pressing by medical personnel.

[0040] 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.

[0041] 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 shell, the outer periphery of the shell is provided with a first guide groove and a second guide groove, a control rod sliding along the first guide groove is provided in the first guide groove, one end of the control rod passes through the first guide groove and is fixedly connected to the connecting component, the connecting component rotates relative to the shell, and the shell is also provided with a movable rod and a fixed rod which are parallel to each other and have equal lengths, the movable rod slides along the second guide groove and one end of the movable rod passes through the second guide groove and is fixed to the connecting component, one end of the fixed rod is fixed to the shell, the other ends of the movable rod and the fixed rod are respectively rotatably connected to the two ends of the needle clamping mechanism, and the control rod is arranged in parallel with the needle clamping mechanism; The connecting assembly comprises a connecting column, an upper plate and a lower plate, the upper ends of the connecting column and the movable rod are respectively fixed to the upper plate, the lower ends of the connecting column and the movable rod are respectively fixed to the lower plate, one end of the control rod is fixed to the side of the connecting column, and the upper plate and the lower plate are respectively arranged at the upper part and the lower part of the shell and are rotatably connected relative to the shell; The needle clamping mechanism includes a needle clamping seat, a tongue piece, a spring piece and a cover piece. The needle clamping seat is vertically provided with a first clamping groove, one side of the needle clamping seat is internally provided with a first groove connected with the first clamping groove, the spring piece is arranged in the first groove, and the other side of the needle clamping seat is provided with a second groove connected with the first clamping groove and extending to the outside of the needle clamping seat, the tongue piece is clamped in the needle clamping seat, and one side of the tongue piece is in contact with the spring piece, and the other side of the tongue piece is arranged in the second groove, and a cover piece for blocking the tongue piece is also arranged in the second groove, and a second clamping groove running vertically through the tongue piece is provided on the tongue piece, and the tongue piece is squeezed by pushing the spring piece to adjust the overlapping area between the first clamping groove and the second clamping groove, thereby realizing the taking and placing of the puncture needle.

2. The CT positioning puncture angle guide according to claim 1, characterized in that: A scale plate is arranged above the upper plate, the scale plate is fixed to the housing, a rotation groove corresponding to the scale is arranged on the scale plate, a pointer sliding along the rotation groove is arranged in the rotation groove, and the pointer is fixed on the upper plate.

3. The CT positioning puncture angle guide according to claim 2, characterized in that: A cover body is provided below the lower plate, the cover body is fixed to the shell, an angle sensor is provided between the cover body and the lower plate, and the angle sensor is fixed on the cover body.

4. The CT positioning puncture angle guide according to claim 1, characterized in that: An intermediate frame is arranged across the center of the shell, the intermediate frame is arranged between the first guide groove and the second guide groove, one end of the intermediate frame is provided with a first slot, and one end of the fixing rod is inserted and fixed in the first slot.

5. The CT positioning puncture angle guide according to claim 4, characterized in that: A second slot is provided at the other end of the intermediate frame, a tail rod is inserted and fixed in the second slot, and the tail rod is connected to the fixing mechanism.

6. The CT positioning puncture angle guide according to claim 1, characterized in that: One side of the tongue piece is arranged as an inclined surface relative to one side of the spring piece.

7. The CT positioning puncture angle guide according to claim 1, characterized in that: A protrusion is arranged on the plane of the other side of the tongue piece facing the outside of the needle clamping seat.

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