Special navigation bracket for CT (Computed Tomography)-guided needle biopsy and particle implantation

Abstract

The utility model discloses a special navigation support for CT (Computed Tomography)-guided needle biopsy and particle implantation, which comprises a base, an upright post and a crank arm, and the lower end of the upright post is in sliding fit connection with the base, can move back and forth along the base and can be locked at any time; the rear end of the crank arm is in sliding fit connection with the stand column, can move up and down along the stand column and can be locked at any time, the front end of the crank arm is connected with a template clamp, and a template is arranged on the template clamp. The combined structure of the base, the stand column and the crank arm is adopted, a template connected to the template clamp at the end of the crank arm can be accurately positioned, a doctor can conveniently and rapidly adjust the position and angle of needle application, and stability and safety are achieved; a large hole and small hole structure is arranged in the template, so that the template can be conveniently used for needle biopsy, particle implantation and a multi-needle insertion operation mode and accurate needle distribution; the device is reasonable in design, simple in structure, easy to manufacture, safe, stable and capable of reducing pain of patients; and time and labor are saved during installation and use, and good market prospects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, and particularly relates to a special navigation bracket for CT-guided puncture biopsy and particle implantation Background Art

[0002] For CT-guided puncture biopsy and particle implantation, the lesion site and puncture point are determined by CT, and the puncture needle is safely and effectively inserted into the lesion position, and a part of the tissue is taken for pathological examination. At present, when performing such operations, most attending physicians directly perform puncture manually without other auxiliary equipment by virtue of their superb skills. Since manual puncture has high requirements for the experience and three-dimensional sense of the physician, for physicians with less experience, the incidence of puncture complications may increase due to the need for multiple punctures and multiple adjustments of the needle insertion angle. Therefore, it is necessary to design a special navigation bracket for CT-guided puncture biopsy and particle implantation Summary of the Invention

[0003] The purpose of the utility model is to provide a special navigation bracket for CT-guided puncture biopsy and particle implantation aiming at the defects existing in the prior art

[0004] Its technical solution is: a special navigation bracket for CT-guided puncture biopsy and particle implantation, comprising a base, a column and an elbow arm. The lower end of the column is slidably and cooperatively connected with the base and can move back and forth along the base and can be locked at any time. The rear end of the elbow arm is slidably and cooperatively connected with the column and can move up and down along the column and can be locked at any time. A template clamp is connected to the front end of the elbow arm, and a template is provided on the template clamp

[0005] Further, the base is in a cuboid shape. A downwardly arranged groove is provided at the top of the cuboid structure along its length direction. The depth of the groove is two-thirds of the thickness of the base. A notch with the same length as the groove is provided on the base wall outside the groove, and the notch communicates with the groove. A U-shaped card slot is provided on the inner side of the base below the groove. Fixing bolts are threadedly connected to the bases at both ends of the groove, and the lower ends of the fixing bolts protrude into the U-shaped card slot. The navigation bracket system is fixed on the carbon fiber board of the CT machine tool through the U-shaped card slot and the fixing bolts

[0006] Further, anti-slip teeth are provided on the inner circumference of the notch or on the base outside the notch

[0007] Further, the column is a cuboid structure with a long strip-shaped through hole in the middle. Its bottom end is provided with a convex tenon, and the convex tenon is provided with a horizontally arranged threaded hole. A fastening bolt is arranged on the threaded hole. A lead screw is arranged in the long strip-shaped through hole. The lower end of the lead screw is rotationally and cooperatively connected with the lower part of the column. The upper end of the lead screw passes through the upper part of the column and is connected with a handwheel. The upper part of the lead screw is rotationally and cooperatively connected with the upper part of the column. The height of the component connected to the subsequent navigation system is adjusted by rotating the handwheel.

[0008] Further, anti-slip teeth are arranged on the inner circumference of the long strip-shaped through hole or on the column outside the long strip-shaped through hole.

[0009] Further, the elbow arm includes a height adjustment arm, a left-right adjustment arm, and an up-down adjustment arm. The height adjustment arm is a cuboid structure. A structure is provided at its rear end. A threaded hole is provided in the middle of the end point of the convex tenon structure. An adjustment bolt is arranged on the threaded hole. A lead screw hole penetrating up and down is provided on the convex tenon structure. A horizontal notch and a vertically penetrating threaded through hole are provided at the front end of the height adjustment arm. A locking bolt is arranged on the threaded through hole. The left-right adjustment arm is composed of a first trapezoidal plate and a second trapezoidal plate connected by a first spherical universal joint. Threaded through holes are provided at the rear end of the first trapezoidal plate and the front end of the second trapezoidal plate. The up-down adjustment arm is a trapezoidal plate structure. A through hole is provided at its front end, and a second spherical universal joint is provided at the tail end. The rear end of the first trapezoidal plate in the left-right adjustment arm is inserted into the notch at the front end of the height adjustment arm and fixed by a locking bolt. The front end of the second trapezoidal plate in the left-right adjustment arm is attached to the front end of the up-down adjustment arm and fixed by a locking bolt.

[0010] Further, both the first spherical universal joint and the second spherical universal joint are provided with locking devices.

[0011] Further, the template clamp includes a square clamping plate body. A rectangular window is provided in the middle of the clamping plate body. Inside is a high-precision biaxial electronic angle meter, which can display the X and Y axis angles of the template clamp and the template it locks. A horizontal notch is provided at its front end. At least two knob bolt holes are provided on the clamping plate body above the notch. Knob bolts are arranged on the knob bolt holes.

[0012] Further, the template includes a square plate body. A connecting plate is fixedly provided on one side edge of the plate body. 16×16 arrayed large holes and 17×17 arrayed small holes are evenly distributed on the plate body. The large holes and small holes are arranged in a staggered manner both longitudinally and transversely.

[0013] Further, the diameter of the large holes is set to 2.9 - 3.2 mm, and the diameter of the small holes is set to 1.4 - 1.8 mm. The distance between adjacent small holes is at least set to 5 mm.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] 1) It adopts the combined structure of a base, a column and an elbow arm, enabling the template connected to the template clamp at the end of the elbow arm to be accurately positioned through the high-precision angle gauge on the template clamp, facilitating the doctor to quickly adjust the position and angle of the needle application, which is stable and safe.

[0016] 2) Locking and fixing mechanisms are adopted at each position adjustment point of the base, column and elbow arm, making it more stable.

[0017] 3) The structure with large holes and small holes arranged alternately in the template can facilitate the needle insertion channels for 18G coaxial biopsy needles used in percutaneous biopsy and particle implantation, and can also be applicable to the needle insertion channels for 12G biopsy needles commonly used in bone biopsy.

[0018] 4) It adopts the structure of 17×17 array of small holes and 16×16 array of large holes, making it very convenient to be applicable to the multi-needle needle insertion surgical method and precise needle placement for particle implantation.

[0019] 5) The utility model is reasonably designed, has a simple structure, is easy to manufacture, is safe and stable, and reduces the pain of patients; the installation and use are time-saving and labor-saving, and it has a good market prospect. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0021] Figure 2 is a schematic structural diagram of the template in the utility model. Detailed Embodiment

[0022] To make the purposes, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0023] Embodiment: Refer to Figure 1 — Figure 2 , a special navigation bracket for CT-guided percutaneous biopsy and particle implantation, including a base 1, a column 2 and an elbow arm 3. The lower end of the column 2 is slidably and cooperatively connected to the base 1 and can move back and forth along the base 1 and be locked at any time. The rear end of the elbow arm 3 is slidably and cooperatively connected to the column 2 and can move up and down along the column 2 and be locked at any time. The front end of the elbow arm 3 is connected with a template clamp 4, and a template 5 is provided on the template clamp 4.

[0024] The base 1 has a cuboid structure. At the top of this cuboid structure, a downwardly disposed groove 11 is provided along its length direction. The depth of the groove 11 is two-thirds of the thickness of the base 1. On the wall of the base 1 outside the groove 11, a notch 12 having the same length as the groove 11 is provided. The notch 12 communicates with the groove 11. Inside the base 1 below the groove 11, a U-shaped card slot 13 is provided. On the base 1 at both ends of the groove 11, fixing bolts 14 are threadedly connected. The lower ends of the fixing bolts 14 protrude into the U-shaped card slot 13. The U-shaped card slot 13 is used for clamping on the side of the hospital bed and is fixed by the fixing bolts 14.

[0025] On the inner circumference of the notch 12 or on the base 1 outside the notch 12, anti-slip teeth 15 are provided.

[0026] The column 2 has a cuboid structure with a long strip-shaped through hole 21 in the middle. At its bottom end, a convex tenon 22 is provided. On the convex tenon 22, a horizontally disposed threaded hole is provided, and a fastening bolt 23 is provided on the threaded hole. The convex tenon 22 is used for inserting into the groove 11 of the base 1. The fastening bolt 23 is inserted from the notch 12 of the base 1 and threadedly connected to the threaded hole of the convex tenon 22. A gasket 16 is provided between the fastening bolt 23 and the notch 12 of the base 1. On the joint surface of the gasket 16 and the notch 12, teeth that coincide with the anti-slip teeth 15 are provided. In this way, after the fastening bolt 23 is fixed, it can be more firm. Inside the long strip-shaped through hole 21, a lead screw is provided. The lower end of the lead screw is rotationally and cooperatively connected to the lower part of the column 2. The upper end of the lead screw passes through the upper part of the column 2 and is connected to a handwheel 24. The upper part of the lead screw is rotationally and cooperatively connected to the upper part of the column 2. On the inner circumference of the long strip-shaped through hole 21 or on the column 2 outside the long strip-shaped through hole 21, anti-slip teeth 25 are provided.

[0027] The turning arm 3 includes a height adjustment arm 31, a left and right adjustment arm 32, and an up and down adjustment arm 33. The height adjustment arm 31 has a cuboid structure 311. At its rear end, a convex tenon structure is provided. In the middle of the end point of the convex tenon structure, a threaded hole is provided, and an adjustment bolt 312 is provided on the threaded hole. On the convex tenon structure, a lead screw hole penetrating up and down is provided. The convex tenon structure is inserted into the long strip-shaped through hole 21. The lead screw inside the long strip-shaped through hole 21 is in spiral transmission cooperation with the lead screw hole. By rotating the handwheel 24, the height adjustment arm 31 can move up and down accordingly with the rotation of the lead screw. The adjustment bolt 312 is used for fixing the height position of the height adjustment arm 31 on the column 2. A gasket is provided between the adjustment bolt 312 and the teeth 25 on the column 2. On the joint surface of this gasket and the column 2, teeth that coincide with the anti-slip teeth 25 are provided. In this way, after the adjustment bolt 312 is fixed, it can be more firm.

[0028] The front end of the height adjustment arm 31 is provided with a horizontal notch and a threaded through hole vertically penetrating, and a locking bolt 313 is provided on the threaded through hole; the left and right adjustment arms 32 are composed of a first trapezoidal plate 321 and a second trapezoidal plate 322 connected by a first spherical universal joint 323, and threaded through holes are provided at the rear end of the first trapezoidal plate 321 and the front end of the second trapezoidal plate 322; the rear end of the first trapezoidal plate 321 is inserted into the notch of the height adjustment arm 31 and locked by the locking bolt 313. The up and down adjustment arm 33 is a trapezoidal plate structure 331, with a through hole at the front end and a second spherical universal joint 332 at the tail end; the rear end of the second trapezoidal plate 322 in the left and right adjustment arms 32 is attached to the front end of the up and down adjustment arm 33 and fixed by a locking bolt 34.

[0029] Both the first spherical universal joint 323 and the second spherical universal joint 331 are provided with locking devices.

[0030] The template clamp 4 includes a square clamping plate body 41, a high-precision biaxial angle gauge 42 is provided in the middle of the clamping plate body 41, a horizontal notch 43 is provided at the front end, at least two knob bolt holes are provided on the clamping plate body 41 above the notch 43, and knob bolts 44 are provided on the knob bolt holes; the rear end of the template clamp 4 is connected to the second spherical universal joint 331 at the tail end of the up and down adjustment arm 33.

[0031] The template 5 includes a square plate body 51, a connecting plate 52 is fixedly provided on one side edge of the plate body 51, 16×16 arrayed large holes 53 and 17×17 arrayed small holes 54 are evenly distributed on the plate body, and the large holes 53 and the small holes 54 are arranged in a staggered manner both longitudinally and transversely; the connecting plate 52 is inserted into the horizontal notch 43 at the front end of the clamping plate body 41 of the template clamp 4 and fixed by the knob bolt 44.

[0032] The diameter of the large holes 53 is set to 2.9 - 3.2 mm, and the diameter of the small holes 54 is set to 1.4 - 1.8 mm; the spacing between adjacent small holes 54 is at least set to 5 mm.

[0033] During use, the U-shaped card slot 13 in the base 1 of the present utility model is clamped on one side edge of the hospital bed and fixed with the fixing bolt 14; loosen the adjusting bolt 312 and turn the handwheel 24 by hand. At this time, the lead screw in the column 2 rotates to drive the crank arm 3 to move up and down. After determining the height position of the crank arm 3, lock the adjusting bolt 312. Loosen the locking bolts 313, 34 and the locking devices of the first ball spherical universal joint 323 and the second ball spherical universal joint 331, and the positions of the template clamp 4 and the template 5 can be adjusted left and right, up and down. The rectangular window 42 provided in the template clamp 4 is used to facilitate observing the part of the patient that needs to be punctured. After the position of the template 5 is determined, the size and number of needles can be selected according to the actual situation. The small holes 54 are suitable for the needle insertion channels of 18G biopsy needles commonly used in percutaneous biopsy and particle implantation. The large holes 53 are suitable for the needle insertion channels of 12G biopsy needles commonly used in bone biopsy. The 17×17 array of small holes 54 and the 16×16 array of large holes 53 are suitable for the multi-needle needle insertion surgical method of particle implantation.

[0034] The present utility model adopts a combined structure of a base, a column and a crank arm, which can accurately position the template connected to the template clamp at the end of the crank arm, facilitating the doctor to quickly adjust the position and angle of the needle insertion, being stable and safe; locking and fixing mechanisms are adopted at each position adjustment point in the base, column and crank arm to make it more stable; the structure of alternately arranging large holes and small holes in the template can facilitate the needle insertion channels of 18G coaxial biopsy needles used in percutaneous biopsy and particle implantation, and can also be suitable for the needle insertion channels of 12G biopsy needles commonly used in bone biopsy; the structure of 17×17 array of small holes and 16×16 array of large holes is adopted, making it very convenient to be suitable for the multi-needle needle insertion surgical method and precise needle placement of particle implantation; the present utility model is reasonable in design, simple in structure, easy to manufacture, safe and stable, reducing the pain of patients; it is time-saving and labor-saving in installation and use, and has a good market prospect.

[0035] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A dedicated navigation bracket for CT-guided puncture biopsy and particle implantation, comprising a base, a column and a crank arm, characterized in that: The lower end of the column is slidably connected to the base and can move forward and backward along the base and can be locked at any time. The rear end of the crank arm is slidably connected to the column and can move up and down along the column and can be locked at any time. The front end of the crank arm is connected to a template clamp, a high-precision dual-axis inclinometer is provided on the template clamp, and a template is provided on the template clamp.

2. The dedicated navigation stent for CT-guided puncture biopsy and particle implantation according to claim 1, characterized in that: The base is a rectangular structure, and a downwardly arranged groove is provided on the top and along its length. The depth of the groove is two-thirds of the thickness of the base. A notch with the same length as the groove is provided on the base wall outside the groove, and the notch is connected to the groove. A U-shaped groove is provided on the inner side of the base at the lower part of the groove. Fixing bolts are threadedly connected to the base at both ends of the groove, and the lower ends of the fixing bolts are exposed in the U-shaped groove.

3. The dedicated navigation stent for CT-guided puncture biopsy and particle implantation according to claim 2, characterized in that: Anti-slip teeth are arranged on the inner circumference of the notch or on the base outside the notch.

4. The dedicated navigation stent for CT-guided puncture biopsy and particle implantation according to claim 1, characterized in that: The column is a rectangular structure with a long strip through hole in the middle, a mortise is provided at the bottom end, a transversely arranged threaded hole is provided on the mortise, a fastening bolt is provided on the threaded hole, a lead screw is provided in the long strip through hole, the lower end of the lead screw is rotatably connected to the lower part of the column, the upper end of the lead screw passes through the upper part of the column and is connected to a handwheel, and the upper part of the lead screw is rotatably connected to the upper part of the column.

5. The dedicated navigation stent for CT-guided puncture biopsy and particle implantation according to claim 4, characterized in that: Anti-slip teeth are arranged on the inner circumference of the long strip through hole or on the columns outside the long strip through hole.

6. The dedicated navigation stent for CT-guided puncture biopsy and particle implantation according to claim 1, characterized in that: The crank arm includes a height adjustment arm, a left and right adjustment arm and an up and down adjustment arm, the height adjustment arm is a rectangular structure, the rear end of which is provided with a mortise and tenon structure, the middle part of the end point of the mortise and tenon structure is provided with a threaded hole, the threaded hole is provided with an adjusting bolt, the mortise and tenon structure is provided with a lead screw hole passing through up and down, the front end of the height adjustment arm is provided with a transverse slot and a threaded through hole vertically passing through, the threaded through hole is provided with a locking bolt; the left and right adjustment arms are composed of a first trapezoidal plate and a second trapezoidal plate connected by a first spherical universal joint, wherein the rear end of the first trapezoidal plate and the front end of the second trapezoidal plate are both provided with threaded through holes; the up and down adjustment arms are trapezoidal plate structures, the front end of which is provided with a through hole, and the tail end is provided with a second spherical universal joint; the rear end of the first trapezoidal plate in the left and right adjustment arms is inserted into the slot at the front end of the height adjustment arm and fixed by a locking bolt, and the front end of the second trapezoidal plate in the left and right adjustment arms is attached to the front end of the up and down adjustment arms and fixed by a locking bolt.

7. The dedicated navigation stent for CT-guided puncture biopsy and particle implantation according to claim 6, characterized in that: The first spherical universal joint and the second spherical universal joint are both provided with locking devices.

8. The dedicated navigation stent for CT-guided puncture biopsy and particle implantation according to claim 1, characterized in that: The template clamp includes a square clamp body, a high-precision dual-axis electronic angle meter is provided in the middle of the clamp body, a transverse slot is provided at the front end, at least two knob bolt holes are provided on the clamp body above the slot, and knob bolts are provided on the knob bolt holes.

9. The dedicated navigation stent for CT-guided puncture biopsy and particle implantation according to claim 1, characterized in that: The template includes a square plate body, a connecting plate is fixedly provided on one side of the plate body, 16×16 array-type large holes and 17×17 array-type small holes are evenly distributed on the plate body, and the large holes and the small holes are staggered in the vertical and horizontal directions.

10. The dedicated navigation stent for CT-guided puncture biopsy and particle implantation according to claim 9, characterized in that: The diameter of the large hole is set to 2.9-3.2 mm, and the diameter of the small hole is set to 1.4-1.8 mm; the distance between adjacent small holes is set to at least 5 mm.

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