Tumor biopsy puncture positioning device used on CT bed

Abstract

The invention discloses a tumor biopsy puncture positioning device used on a CT bed, and relates to the technical field of medical instruments, and the tumor biopsy puncture positioning device is characterized by comprising a universal wheel base, a height adjusting telescopic rod is arranged at the top of the base, and a first connecting block is fixedly connected to the top of the height adjusting telescopic rod; the first connecting block is fixedly connected with a width adjusting telescopic rod perpendicular to the height adjusting telescopic rod, the width adjusting telescopic rod is fixedly connected with a second connecting block, the second connecting block is fixedly connected with two limiting plates, a first angle adjusting plate is movably connected between the two limiting plates, and the first angle adjusting plate is fixedly connected with a third connecting block. The third connecting block is movably connected with a second angle adjusting rod, and the second angle adjusting rod is fixedly connected with an auxiliary puncture structure. The multi-directional angle adjustment can be carried out, the practicability is higher, after adjustment is completed, accurate puncture can be carried out through the auxiliary puncture structure, the unstable risk of manual puncture is reduced, and safety and reliability are higher.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and more particularly to a tumor biopsy puncture positioning device used on a CT bed. Background Art

[0002] CT-guided puncture technology refers to a special inspection method that uses a puncture needle to percutaneously puncture into organs or tissues under the guidance of a CT machine in order to obtain cytological and histological materials to clarify the nature of the lesion. Compared with other methods, CT puncture has many advantages, such as high CT resolution, which can show clear images of lesions as small as 2mm, and is not affected by hollow organs and gas. The tomographic images are clearly layered and there is no overlap. In addition, CT enhanced images and three-dimensional reconstructed images can make the relationship between the lesion and the surrounding tissue structure clearer, and the image is more vivid and three-dimensional. The key to puncture biopsy is to make the puncture needle accurately puncture the tumor in the body cavity, which involves the spatial position of the puncture needle and the insertion angle and depth. After the spatial position of the puncture needle is determined, the insertion angle becomes an important issue for the next step of control. Most doctors manually control the puncture needle insertion angle for tumors in the body cavity based on experience. However, since the puncture needle insertion angle is a three-dimensional spatial angle, the puncture hit rate based on experience alone is low. Therefore, multiple CT scans are often required to monitor and repeatedly adjust the puncture needle insertion angle. This prolongs the puncture and treatment time, increases the radiation dose received by the patient, and increases the patient's puncture pain and surgical risks.

[0003] Patent CN204468146U discloses a CT-guided beam positioning biopsy puncture device, which solves the problem of CT-guided body cavity tumor biopsy puncture direction positioning, and includes: a tube frame for setting a biopsy puncture needle and a positioning beam pen; an angle adjuster for adjusting and fixing the puncture needle at the fault guidance angle; a horizontal arm that makes the angle adjuster move horizontally to search for the insertion mark point; a vertical frame that adjusts the horizontal arm up and down and moves along the bedside to search for the mark point, the above-mentioned angle adjuster uses a semi-circular angle plate with an arc-shaped through-slot slideway in the middle part of the semi-circular angle plate as a frame, and a slider is provided in the slideway to install a stepper motor and a pivot gear roller engaged with the tooth plate; the above-mentioned horizontal arm uses a scale plate with a horizontal through-slot slideway in the middle part of the horizontal tooth plate as a frame, and a slider is provided in the slideway to install a stepper motor and a pivot gear roller engaged with the horizontal tooth plate; the above-mentioned vertical frame is composed of a vertical lifting column and a shifting vehicle along the bedside direction, and is used for CT-guided body cavity interventional examination and treatment.

[0004] As described in the above patent, the existing positioning device can only adjust the angle on a single plane, while the actual operation process requires adjustment in multiple directions, so the existing positioning device is not practical enough; the existing positioning device cannot assist puncture after positioning, and after positioning, manual puncture will inevitably have unstable factors, so the positioning puncture effect is still not good enough. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned problem and provide a tumor biopsy puncture positioning device for a CT bed. By setting a first angle adjustment plate and a first angle adjustment rod, multi-directional angle adjustment can be performed, which is more practical. After the adjustment is completed, accurate puncture can be performed through the auxiliary puncture structure, reducing the puncture path error that is easy to cause due to manual puncture, and is safer and more reliable.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A tumor biopsy puncture positioning device for a CT bed, comprising a universal wheel base, a height adjustment telescopic rod is provided on the top of the base, a first connecting block is fixedly connected to the top of the height adjustment telescopic rod, the first connecting block is fixedly connected to a width adjustment telescopic rod perpendicular to the height adjustment telescopic rod, the width adjustment telescopic rod is fixedly connected to a second connecting block, the second connecting block is fixedly connected to two limit plates, a first angle adjustment plate is movably connected between the two limit plates, the first angle adjustment plate is fixedly connected to a third connecting block, the third connecting block is movably connected to the second angle adjustment rod, and the second angle adjustment rod is fixedly connected to an auxiliary puncture structure.

[0007] By adopting the above technical solution, when the doctor needs to perform puncture positioning, he first moves the entire device to the side of the CT bed through the universal wheel base, which uses a universal wheel with a built-in brake wheel. After confirming the puncture angle, puncture depth and puncture position under the guidance of CT, the position of the auxiliary puncture structure is preliminarily adjusted to correspond to the puncture position through the height adjustment telescopic rod and the width adjustment telescopic rod, and then the angle of the auxiliary puncture structure is further fine-tuned through the first angle adjustment plate and the second angle adjustment rod to correspond to the puncture angle confirmed under the guidance of CT, and then accurate puncture is performed through the auxiliary puncture structure. The device can perform multi-directional angle adjustment by setting the first angle adjustment plate and the first angle adjustment rod, and is more practical. After the adjustment is completed, accurate puncture can be performed through the auxiliary puncture structure, reducing the puncture path error that is easy to cause due to manual puncture, and is safer and more reliable.

[0008] The present invention is further configured as follows: the first angle adjustment plate includes a traction plate and a guide plate, the traction plate is slidably sleeved in the guide plate, the guide plate is symmetrically provided with two first rotating shafts, and the two first rotating shafts are respectively rotatably connected to the two limiting plates.

[0009] The present invention is further configured as follows: a second rotating shaft is provided at the top of the traction plate, two second rotating shafts are rotatably connected with fourth connecting blocks, the fourth connecting blocks are fixedly connected with a traction telescopic rod, and the fixed section of the traction telescopic rod is fixedly connected with the second connecting blocks.

[0010] By adopting the above technical solution, the extension or shortening of the traction telescopic rod is utilized to drive the traction plate to rotate, and the traction plate drives the guide plate to rotate around the two first rotation axes, thereby flexibly adjusting the angle of the first angle adjustment plate.

[0011] The present invention is further configured as follows: first calibration lines are provided on both sides of the traction plate and the guide plate, and the two limit plates are provided with two groups of first angle lines symmetrically centered on the two first rotating shafts, and the rotation angle of the first angle adjustment plate is determined by observing the first calibration line corresponding to the first angle line.

[0012] The present invention is further configured as follows: a first motor is embedded in the third connecting block, a first motor shaft is connected to a first driving gear, a first driving gear is meshed with a first driven gear, and the first driven gear is fixedly sleeved on the second angle adjustment rod.

[0013] By adopting the above technical solution, under the forward and reverse rotation of the first motor, the first driving gear drives the first driven gear to rotate, thereby driving the second angle adjustment rod to flexibly adjust the rotation angle.

[0014] The present invention is further configured as follows: the second angle adjustment rod is provided with a second calibration line away from the first driven gear, the first angle adjustment plate is provided with a second angle line centered on the second angle adjustment rod, and the rotation angle of the second angle adjustment rod is determined by observing the second calibration line corresponding to the second angle line.

[0015] The present invention is further configured as follows: the auxiliary puncture structure comprises a shell, the shell is fixedly connected to the second angle adjustment rod, the top of the shell is fixedly connected to a connecting rod, and the connecting rod is fixedly connected to a guide sleeve.

[0016] By adopting the above technical solution, after adjusting the puncture position and puncture angle, the puncture needle is passed through the guide sleeve and then puncture is performed. Under the limitation of the guide sleeve, the stability and accuracy of the puncture angle and puncture position are guaranteed.

[0017] The present invention is further configured as follows: a second motor is embedded in the shell, a shaft of the second motor is connected to a second driving gear, and the second driving gear is fixedly connected to a first guide roller.

[0018] The present invention is further configured as follows: a screw is rotatably connected inside the shell, and an adjusting knob is fixedly connected to the screw after the screw passes through the shell, the screw is threadedly sleeved with a limit block, the limit block shaft is connected to a second driven gear, the second driving gear is movably meshed with the first driving gear, the second driven gear is fixedly connected to a second guide roller parallel to the first guide roller, the shell is provided with a notch for the second guide roller to move, and when the second driving gear is meshed with the second driven gear, the guide sleeve is located directly above the gap between the first guide roller and the second guide roller.

[0019] The present invention is further configured as follows: the first guide roller and the second guide roller have the same structure, and both include a hard center shaft and a soft sleeve.

[0020] By adopting the above technical scheme, in order to avoid various unstable factors of manual puncture that affect the puncture effect, after the puncture needle penetrates the sleeve, the screw rod is driven to rotate by the adjusting knob, thereby driving the second guide roller to separate from the first guide roller through the limit block, and then the puncture needle passes between the first guide roller and the second guide roller, and then the screw rod is driven to rotate by the adjusting knob, thereby driving the second guide roller to move closer to the first guide roller through the limit block until the second driving wheel and the second driven gear are meshed. At this time, the puncture needle is tightly fitted by the two soft sleeves, and then the second motor is started to drive the second driving gear to rotate and transmit the second driven gear to rotate towards each other, thereby driving the puncture needle to enter the needle. Positioning and puncture do not require manual operation, and are accurate and stable.

[0021] In summary, the present invention has the following beneficial effects:

[0022] 1. The present invention can perform multi-directional angle adjustment by providing the first angle adjustment plate and the first angle adjustment rod, which is more practical. After the adjustment is completed, accurate puncture can be performed through the auxiliary puncture structure, which reduces the puncture path error easily caused by manual puncture, and is safer and more reliable;

[0023] 2. The present invention utilizes the extension or shortening of the traction telescopic rod to drive the traction plate to rotate, and the traction plate drives the guide plate to rotate around the two first rotating shafts, thereby flexibly adjusting the angle of the first angle adjustment plate, and the rotation angle of the first angle adjustment plate can be accurately and clearly observed by the first calibration line corresponding to the first angle line; under the forward and reverse rotation of the first motor, the first driving gear drives the first driven gear to rotate, thereby driving the second angle adjustment rod to flexibly adjust the rotation angle; the rotation angle of the second angle adjustment rod can be accurately and clearly observed by the second calibration line corresponding to the second angle line;

[0024] 3. After the puncture position and puncture angle are adjusted, the puncture needle is passed through the guide sleeve, and then puncture is performed. Under the limit of the guide sleeve, the puncture angle and puncture position are guaranteed to be stable and accurate. In order to avoid various unstable factors of artificial puncture and affect the puncture effect, an auxiliary puncture structure is provided. After the puncture needle penetrates the sleeve, the screw is first rotated by the adjusting knob, thereby driving the second guide roller to separate from the first guide roller through the limit block, and then the puncture needle passes between the first guide roller and the second guide roller, and then the screw is rotated by the adjusting knob, thereby driving the second guide roller to approach the first guide roller through the limit block until the second driving wheel and the second driven gear are meshed. At this time, the puncture needle is tightly fitted by the two soft sleeves, and then the second motor is started to drive the second driving gear to rotate and transmit the second driven gear to rotate towards each other, thereby driving the puncture needle to enter the needle. Positioning and puncture do not require manual operation, and are accurate and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is an overall structural diagram of the device in an embodiment of the present invention;

[0026] Figure 2 1 is a diagram of the connection structure of the limit plate in an embodiment of the present invention;

[0027] Figure 3 This is an external structural diagram of the auxiliary needle insertion structure in an embodiment of the present invention;

[0028] Figure 4 It is a diagram of the internal structure of the auxiliary needle insertion structure in an embodiment of the present invention.

[0029] In the figure: 1, universal wheel base; 2, height adjustment telescopic rod; 3, first connecting block; 4, width adjustment telescopic rod; 5, second connecting block; 51, first angle line; 6, limit plate; 7, first angle adjustment plate; 71, traction plate; 72, guide plate; 73, first rotating shaft; 74, second rotating shaft; 75, fourth connecting block; 76, traction telescopic rod; 77, first calibration line; 78, second angle line; 8, third connecting block; 81, first motor; 82, first driving gear; 9, The second angle adjustment rod; 91, the second calibration line; 92, the first driven gear; 10, the auxiliary puncture structure; 101, the housing; 102, the second motor; 103, the second driving gear; 104, the first guide roller; 105, the screw rod; 106, the adjustment knob; 107, the limit block; 108, the second driven gear; 109, the second guide roller; 1010, the hard center shaft; 1011, the soft bushing; 1012, the connecting rod; 1013, the guide sleeve; 1014, the notch. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be further described in detail below in conjunction with the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments 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 creative work should fall within the scope of protection of the present invention.

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below in conjunction with the embodiments.

[0032] Example:

[0033] like Figure 1-Figure 4 As shown, a tumor biopsy puncture positioning device for a CT bed comprises a universal wheel base 1, a height adjustment telescopic rod 2 is provided on the top of the base, a first connecting block 3 is fixedly connected to the top of the height adjustment telescopic rod 2, a width adjustment telescopic rod 4 perpendicular to the height adjustment telescopic rod 2 is fixedly connected to the first connecting block 3, the width adjustment telescopic rod 4 is fixedly connected to the second connecting block 5, the second connecting block 5 is fixedly connected to two limit plates 6, a first angle adjustment plate 7 is movably connected between the two limit plates 6, the first angle adjustment plate 7 comprises a traction plate 71 and a guide plate 72, the traction plate 71 is slidably sleeved in the guide plate 72, the guide plate 72 is symmetrically provided with two first rotating shafts 73, and the two first rotating shafts 73 are respectively rotatably connected to the two limit plates 6.

[0034] A second rotating shaft 74 is provided at the top of the traction plate 71, and the two second rotating shafts 74 are rotatably connected to the fourth connecting block 75, and the fourth connecting block 75 is fixedly connected to the traction telescopic rod 76, and the fixed section of the traction telescopic rod 76 is fixedly connected to the second connecting block 5. The traction plate 71 is driven to rotate by the extension or shortening of the traction telescopic rod 76, and the traction plate 71 drives the guide plate 72 to rotate around the two first rotating shafts 73, thereby flexibly adjusting the angle of the first angle adjustment plate 7. First calibration lines 77 are provided on both sides of the traction plate 71 and the guide plate 72, and the two limit plates 6 are provided with two groups of first angle lines 51 symmetrically centered on the two first rotating shafts 73. The rotation angle of the first angle adjustment plate 7 is determined by observing the first calibration lines 77 corresponding to the first angle lines 51.

[0035] The first angle adjustment plate 7 is fixedly connected to the third connection block 8, the third connection block 8 is movably connected to the second angle adjustment rod 9, the third connection block 8 is embedded with the first motor 81, the first motor 81 shaft is connected to the first driving gear 82, the first driving gear 82 is meshed with the first driven gear 92, and the first driven gear 92 is fixedly sleeved on the second angle adjustment rod 9. Under the forward and reverse rotation of the first motor 81, the first driving gear 82 drives the first driven gear 92 to rotate, thereby driving the second angle adjustment rod 9 to flexibly adjust the rotation angle. The second angle adjustment rod 9 is provided with a second calibration line 91 away from the first driven gear 92, and the first angle adjustment plate 7 is provided with a second angle line 78 centered on the second angle adjustment rod 9. The rotation angle of the second angle adjustment rod 9 is determined by observing the second calibration line 91 corresponding to the second angle line 78.

[0036] The second angle adjustment rod 9 is fixedly connected to the auxiliary puncture structure 10. The auxiliary puncture structure 10 includes a housing 101, which is fixedly connected to the second angle adjustment rod 9, and a connecting rod 1012 is fixedly connected to the top of the housing 101, and the connecting rod 1012 is fixedly connected to the guide sleeve 1013. After adjusting the puncture position and puncture angle, the puncture needle passes through the guide sleeve 1013, and then puncture is performed. Under the limit of the guide sleeve 1013, the stability and accuracy of the puncture angle and puncture position are guaranteed.

[0037] The housing 101 is embedded with a second motor 102, the shaft of the second motor 102 is connected to a second driving gear 103, and the second driving gear 103 is fixedly connected to a first guide roller 104. A screw 105 is rotatably connected in the housing 101, and the screw 105 is fixedly connected to an adjustment knob 106 after passing through the housing 101. The screw 105 is threadedly sleeved with a limit block 107, and the limit block 107 is axially connected to a second driven gear 108. The second driving gear 103 is movably meshed with the first driving gear 82, and the second driven gear 108 is fixedly connected to a second guide roller 109 parallel to the first guide roller 104. The housing 101 is provided with a notch 1014 for the second guide roller 109 to move. When the second driving gear 103 is meshed with the second driven gear 108, the guide sleeve 1013 is located directly above the gap between the first guide roller 104 and the second guide roller 109. The first guide roller 104 and the second guide roller 109 have the same structure, both including a hard central shaft 1010 and a soft sleeve 1011. In order to avoid various unstable factors of manual puncture that affect the puncture effect, after the puncture needle penetrates the cannula, the screw 105 driven by the adjusting knob 106 is rotated, thereby driving the second guide roller 109 to separate from the first guide roller 104 through the stop block 107, and then the puncture needle passes between the first guide roller 104 and the second guide roller 109, and then the screw 105 driven by the adjusting knob 106 is rotated, thereby driving the second guide roller 109 to approach the first guide roller 104 through the stop block 107, until the second driving wheel and the second driven gear 108 are meshed, at which time the puncture needle is tightly fitted by the two soft sleeves 1011, and then the second motor 102 is started to drive the second driving gear 103 to rotate and drive the second driven gear 108 to rotate in the opposite direction, thereby driving the puncture needle to enter the needle, positioning and puncture do not require manual operation, and are accurate and stable.

[0038] Working principle: When the doctor needs to perform puncture positioning, he first moves the entire device to the side of the CT bed through the universal wheel base 1, which uses a universal wheel with a built-in brake wheel. After confirming the puncture angle, puncture depth and puncture position under the guidance of CT, the position of the auxiliary puncture structure 10 is preliminarily adjusted to correspond to the puncture position through the height adjustment telescopic rod 2 and the width adjustment telescopic rod 4, and then the angle of the auxiliary puncture structure 10 is further fine-tuned through the first angle adjustment plate 7 and the second angle adjustment rod 9 to make it correspond to the puncture angle confirmed under the guidance of CT, and then accurate puncture is performed through the auxiliary puncture structure 10.

[0039] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A tumor biopsy puncture positioning device for a CT bed, characterized by: The invention comprises a universal wheel base (1), a height-adjusting telescopic rod (2) is provided on the top of the base, a first connecting block (3) is fixedly connected to the top of the height-adjusting telescopic rod (2), the first connecting block (3) is fixedly connected to a width-adjusting telescopic rod (4) perpendicular to the height-adjusting telescopic rod (2), the width-adjusting telescopic rod (4) is fixedly connected to a second connecting block (5), the second connecting block (5) is fixedly connected to two limit plates (6), a first angle-adjusting plate (7) is movably connected between the two limit plates (6), the first angle-adjusting plate (7) is fixedly connected to a third connecting block (8), the third connecting block (8) is movably connected to a second angle-adjusting rod (9), and the second angle-adjusting rod (9) is fixedly connected to an auxiliary puncture structure (10).

2. The tumor biopsy puncture positioning device for a CT bed according to claim 1, characterized in that: The first angle adjustment plate (7) comprises a traction plate (71) and a guide plate (72), wherein the traction plate (71) is slidably sleeved in the guide plate (72), and the guide plate (72) is symmetrically provided with two first rotating shafts (73), and the two first rotating shafts (73) are respectively rotatably connected to the two limiting plates (6).

3. The tumor biopsy puncture positioning device for a CT bed according to claim 2, characterized in that: A second rotating shaft (74) is provided at the top of the traction plate (71), and the second rotating shafts (74) are rotatably connected to fourth connecting blocks (75). The fourth connecting blocks (75) are fixedly connected to a traction telescopic rod (76), and the fixed section of the traction telescopic rod (76) is fixedly connected to the second connecting block (5).

4. The tumor biopsy puncture positioning device for a CT bed according to claim 3 is characterized in that: First calibration lines (77) are provided on both sides of the traction plate (71) and the guide plate (72), and the two limit plates (6) are provided with two groups of first angle lines (51) symmetrically centered on the two first rotating shafts (73), and the rotation angle of the first angle adjustment plate (7) is determined by observing the first calibration lines (77) corresponding to the first angle lines (51).

5. The tumor biopsy puncture positioning device for a CT bed according to claim 1, characterized in that: The third connecting block (8) is embedded with a first motor (81), the shaft of the first motor (81) is connected with a first driving gear (82), the first driving gear (82) is meshed with a first driven gear (92), and the first driven gear (92) is fixedly sleeved on the second angle adjustment rod (9).

6. The tumor biopsy puncture positioning device for a CT bed according to claim 5, characterized in that: The second angle adjustment rod (9) is provided with a second calibration line (91) away from the first driven gear (92), and the first angle adjustment plate (7) is provided with a second angle line (78) centered on the second angle adjustment rod (9), and the rotation angle of the second angle adjustment rod (9) is determined by observing the second calibration line (91) corresponding to the second angle line (78).

7. The tumor biopsy puncture positioning device for a CT bed according to claim 1, characterized in that: The auxiliary puncture structure (10) comprises a shell (101), wherein the shell (101) is fixedly connected to the second angle adjustment rod (9), a connecting rod (1012) is fixedly connected to the top of the shell (101), and the connecting rod (1012) is fixedly connected to a guide sleeve (1013).

8. The tumor biopsy puncture positioning device for a CT bed according to claim 7, characterized in that: The housing (101) has a second motor (102) embedded therein; the shaft of the second motor (102) is connected to a second driving gear (103); the second driving gear (103) is fixedly connected to a first guide roller (104).

9. The tumor biopsy puncture positioning device for a CT bed according to claim 8, characterized in that: A screw rod (105) is rotatably connected inside the housing (101); the screw rod (105) is fixedly connected to an adjusting knob (106) after passing through the housing (101); the screw rod (105) is threadedly sleeved with a limit block (107); the limit block (107) is axially connected to a second driven gear (108); the second driving gear (103) is movably meshed with the first driving gear (82); the second driven gear (108) is fixedly connected to a second guide roller (109) parallel to the first guide roller (104); the housing (101) is provided with a notch (1014) for the second guide roller (109) to move; when the second driving gear (103) is meshed with the second driven gear (108), the guide sleeve (1013) is located directly above the gap between the first guide roller (104) and the second guide roller (109).

10. The tumor biopsy puncture positioning device for a CT bed according to claim 1, characterized in that: The first guide roller (104) and the second guide roller (109) have the same structure, and both include a hard central shaft (1010) and a soft shaft sleeve (1011).

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