Spine positioning frame capable of assisting in determining puncture angle under X-ray fluoroscopy

Abstract

The invention discloses a spine positioning frame capable of assisting in determining a puncture angle under X-ray fluoroscopy. The spine positioning frame comprises a supporting frame and a positioning frame body. The supporting frame comprises at least three supporting strips extending outwards from the center in the radial direction, and the outer end of each supporting strip is provided with a supporting leg part protruding downwards. The positioning frame is fixed on one supporting strip of the supporting frame, and the positioning frame comprises a plurality of positioning strips which are distributed at intervals in the radial direction and can be developed under X rays. The puncture angle can be effectively guided under X-ray fluoroscopy, the positioning frame can be conveniently moved away in the puncture process, and the influence of the positioning frame on follow-up puncture operation is avoided.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a spinal positioning frame that can assist in determining the puncture angle under X-ray fluoroscopy. Background Technology

[0002] During fluoroscopic-guided spinal punctures, traditional positioning devices typically fit snugly against the skin surface and can only locate the superficial puncture point, failing to effectively guide the puncture angle. When the puncture needle enters deeper tissues, it is prone to cephalad / collateral and inward / outward deviations, affecting puncture accuracy and increasing operation time, fluoroscopy cycles, and puncture injury. This is especially true in transforaminal lumbar nerve root block, where the skin is far from the target point, and even slight angular deviations can cause the needle tip to deviate from the target, making it difficult to enter the intervertebral foramen and reach the target location.

[0003] To address the issue of puncture angle, Chinese patent CN206499513U discloses a puncture needle positioning support frame. This technical solution uses a positioning grid and a support net to accurately position and support the puncture needle. Before the puncture needle penetrates the skin, the puncture angle and position are confirmed to simulate puncture, ensuring that both the puncture angle and position are accurate.

[0004] However, although the above-mentioned technical solution can simulate puncture before puncture to determine the angle and position of puncture, it is not convenient to remove the positioning support during puncture, which will hinder subsequent puncture operations. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a spinal positioning frame that can assist in determining the puncture angle under X-ray fluoroscopy. This not only allows for effective guidance of the puncture angle under X-ray fluoroscopy but also facilitates the removal of the positioning frame during the puncture process, thus avoiding its impact on subsequent puncture operations.

[0006] This invention provides a spinal positioning frame that can assist in determining the puncture angle under X-ray fluoroscopy, comprising:

[0007] A support frame, the support frame comprising at least three support bars extending radially outward from the center, each support bar having a downwardly protruding leg at its outer end;

[0008] A positioning frame, which is fixed to one of the support bars of the support frame, the positioning frame comprising a plurality of positioning bars that are radially spaced and can all be visualized under X-rays.

[0009] Furthermore, each of the positioning bars is in the shape of an arc with the center of the support frame as the center.

[0010] Furthermore, each of the positioning bars has a plurality of scale marks that protrude from at least one side and are visible under X-rays, distributed at intervals along its length.

[0011] Furthermore, each of the scale marks protrudes from the outer side of the positioning strip.

[0012] Furthermore, the positioning frame is made entirely of metal.

[0013] Furthermore, the middle portion of each of the positioning strips is directly fixed to the support strip.

[0014] Furthermore, the positioning frame also includes a sliding member that extends radially and is slidably mounted on the support bar, with the middle portion of each positioning bar fixed to the sliding member;

[0015] It also includes an adjustment mechanism for driving the slider to slide along the support bar.

[0016] Furthermore, the support bar is a square bar, and the sliding member is a square tube that is slidably sleeved outside the support bar.

[0017] Furthermore, the adjustment mechanism includes:

[0018] The fixing seat is fixed to the outer end of the support bar;

[0019] Adjustment seat, the adjustment seat being fixed to the outer end of the sliding member;

[0020] The driving component includes a lead screw portion extending radially and threadedly engaged with the adjusting seat, a mounting portion coaxially disposed at the outer end of the lead screw portion and rotatably mounted on the fixed seat, and a knob portion disposed at the outer end of the mounting portion.

[0021] Furthermore, each of the legs is provided with a support plate at its lower end, and the support plate is provided with an attachment portion on its lower side.

[0022] The beneficial effects of this invention are reflected in:

[0023] While maintaining the ideal X-ray fluoroscopy angle, first obtain the puncture target point through fluoroscopy and leave a visible surface marker point A. Then, place the positioning frame into the fluoroscopy range, and after another fluoroscopy, obtain the relative position point B of the puncture target point on the positioning frame. The line connecting points A and B can determine a path directly to the puncture target point. Keeping the positioning frame in place, the puncture needle tip enters from point A. Adjust the puncture angle until the needle tail is at point B on the positioning frame, so that the puncture needle can reach the puncture target point along the specified path.

[0024] During puncture, the needle is first pre-punctured to a certain depth with the assistance of the positioning frame. Then, the positioning frame is moved so that the puncture needle slides out from the opening between the two side ends of the positioning strips. After the positioning frame slides out of the puncture needle, it is removed. Then, the puncture needle is continued to be advanced until the puncture needle reaches the puncture target point.

[0025] Therefore, this invention can not only effectively guide the puncture angle under X-ray fluoroscopy, but also facilitates the removal of the positioning frame during the puncture process, avoiding its impact on subsequent puncture operations. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0027] Figure 1 This is a perspective view of Example 1;

[0028] Figure 2 This is a schematic diagram showing the relative position of the puncture target point on the positioning frame under X-ray fluoroscopy in Example 1.

[0029] Figure 3 This is a schematic diagram illustrating the determination of the puncture path in Example 1;

[0030] Figure 4 This is a perspective view of Example 2;

[0031] Figure 5 This is an exploded view of Example 2;

[0032] Figure 6 This is a perspective view of the adjustment mechanism in Example 2;

[0033] Figure 7 This is a cross-sectional view of the adjustment mechanism in Example 2;

[0034] Figure 8 This is a schematic diagram showing the relative position of the puncture target point on the positioning frame under X-ray fluoroscopy in Example 2;

[0035] Figure 9 This is a schematic diagram showing the relative position of the puncture target point on the positioning frame after adjustment, as shown in Example 2.

[0036] In the attached diagram, 100-support frame; 110-support bar; 111-leg; 112-support plate; 200-positioning frame; 210-positioning bar; 211-scale mark; 220-sliding component; 300-adjustment mechanism; 310-fixed seat; 320-adjustment seat; 330-drive component; 331-lead screw; 332-mounting part; 333-knob part. Detailed Implementation

[0037] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0038] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0039] Example 1

[0040] like Figures 1-3 As shown, Embodiment 1 provides a spinal positioning frame that can assist in determining the puncture angle under X-ray fluoroscopy, including a support frame 100 and a positioning frame 200.

[0041] The support frame 100 includes at least three support bars 110 extending radially outward from the center. Each support bar 110 has a downwardly protruding leg portion 111 at its outer end. The leg portion 111 is specifically formed by bending the outer end of each support bar 110 to one side.

[0042] It should be noted that the number of support bars 110 is generally 3 or 4, arranged in a centrally symmetrical manner, preferably three.

[0043] The positioning frame 200 is fixed on a support bar 110 of the support frame 100. The positioning frame 200 includes multiple positioning bars 210 that are radially spaced and can all be visualized under X-rays.

[0044] In this embodiment, the middle part of each positioning strip 210 is directly fixed to the support strip 110, and an opening is formed between the two ends of each positioning strip 210.

[0045] In this embodiment, the positioning strips 210 are arranged in parallel, and each positioning strip 210 is preferably an arc shape with the center of the support frame 100 as the center. Of course, in other embodiments, the positioning strips 210 can also be straight.

[0046] To enable the positioning frame 200 to be developed under X-rays, the positioning frame 200 is made of metal, such as stainless steel. The support frame 100 has no requirements for being developed under X-rays and can be made of metal or other materials, such as plastic.

[0047] like Figure 2 As shown, when the positioning frame 200 is placed within the fluoroscopic range, the positioning strip 210 can be visualized under X-rays. This allows the relative position point B between the puncture target and the positioning frame 200 to be roughly marked in the X-ray image, providing a reference for subsequent puncture positioning.

[0048] In some embodiments, each positioning bar 210 has a plurality of scale marks 211 that protrude from at least one side and are visible under X-rays, distributed at intervals along its length. By setting scale marks 211 on the positioning bar 210, the relative position point B of the puncture target on the positioning frame 200 can be read more accurately through the scale marks 211, thereby further improving the accuracy of subsequent puncture positioning.

[0049] It should be noted that the scale mark 211 may protrude from the inner and / or outer side of the positioning strip 210. Preferably, the scale mark 211 protrudes only from the outer side of the positioning strip 210. When the positioning frame 200 is removed, the puncture needle can be placed against the inner side of the positioning strip 210, which can prevent the scale mark 211 from touching the puncture needle when the positioning frame 200 is removed.

[0050] like Figure 2 and Figure 3 As shown, while maintaining the ideal X-ray fluoroscopy angle, the body puncture target point is first obtained through fluoroscopy, and a visible surface marker point A is left (how to confirm the surface marker point A is an existing technology, for example, an X-ray-developed grid can be used to mark the skin to confirm the surface marker point A, and the grid is removed after marking). Then, the positioning frame 200 is placed in the fluoroscopy range, and after fluoroscopy again, the relative position point B of the puncture target point on the positioning frame 200 is obtained. The line connecting points A and B can determine a path directly to the puncture target point. Keeping the position of the positioning frame 200 still, the puncture needle tip enters from point A, and the puncture angle is adjusted until the needle tail is at point B on the positioning frame 200, so that the puncture needle can reach the puncture target point along the specified path.

[0051] During puncture, the needle is first pre-punctured to a certain depth with the assistance of the positioning frame 200. Then, the positioning frame 200 is moved so that the puncture needle slides out from the opening between the two side ends of the positioning strips 210. After the positioning frame 200 slides out the puncture needle, it is removed. Then, the puncture needle is continued to be advanced until the puncture needle reaches the puncture target point.

[0052] Therefore, the present invention can not only effectively guide the puncture angle under X-ray fluoroscopy, but also facilitates the removal of the positioning frame 200 during the puncture process, thus avoiding its influence on subsequent puncture operations.

[0053] Example 2

[0054] like Figures 4-9 As shown, Example 2 provides a spinal positioning frame that can assist in determining the puncture angle under X-ray fluoroscopy, and its difference from Example 1 is as follows:

[0055] The positioning frame 200 also includes a sliding member 220 that extends radially and is slidably mounted on the support bar 110, with the middle part of each positioning bar 210 fixed on the sliding member 220.

[0056] Specifically, refer to Figure 4 and Figure 5 The support bar 110 is a square bar, and the sliding member 220 is a square tube that is slidably sleeved outside the support bar 110. In this way, the sliding member 220 can slide relative to the support bar 110 without rotating relative to the support bar 110.

[0057] This embodiment also includes an adjustment mechanism 300, which is used to drive the slider 220 to slide along the support bar 110.

[0058] Specifically, refer to Figure 6 and Figure 7 The adjustment mechanism 300 includes a fixed base 310, an adjustment base 320, and a driving member 330. The fixed base 310 is fixed to the outer end of the support bar 110; the adjustment base 320 is fixed to the outer end of the sliding member 220; the driving member 330 includes a lead screw portion 331 extending radially and threadedly engaged with the adjustment base 320, a mounting portion 332 coaxially disposed at the outer end of the lead screw portion 331 and rotatably mounted on the fixed base 310, and a knob portion 333 disposed at the outer end of the mounting portion 332. The adjustment mechanism 300 allows the sliding member 220 to slide along the support bar 110 by rotating the knob portion 333 with a finger, thereby adjusting the position of the positioning bar 210.

[0059] Because the puncture needle is thin and there is a certain gap between each positioning strip 210, the relative position point B of the puncture target point on the positioning frame 200 is located between the two positioning strips 210. It is difficult to accurately position the needle tail of the puncture needle through the positioning strips 210, thus affecting the accuracy of the puncture angle.

[0060] In this embodiment, the position of the positioning strip 210 can be adjusted by setting the adjustment mechanism 300. The specific operation is as follows: Figure 8 As shown, the positioning frame 200 is first placed within the fluoroscopic range. After fluoroscopy, the relative position point B of the puncture target on the positioning frame 200 is obtained. The distance between point B and the positioning strip 210 on its outer side is calculated using the obtained X-ray imaging (this distance is parallel to the direction of adjustment of the positioning strip 210). Then, the position of the positioning frame 200 is adjusted according to the calculated distance so that the relative position point B of the puncture target on the positioning frame 200 is closer to the positioning strip 210 on its outer side (e.g., ...). Figure 9 As shown in the figure, during puncture, the needle tail rests against the corresponding position on the outer positioning strip 210, which can further improve the accuracy of puncture angle positioning.

[0061] Each leg 111 has a support plate 112 at its lower end, and an attachment part is provided on the lower side of the support plate 112. This allows it to be fixed to the patient's skin through the attachment part, preventing the positioning frame from shifting during adjustment.

[0062] It is understood that the attachment part in this embodiment can be fixed to the skin by adhesive or by vacuum adsorption.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A spinal positioning frame that can assist in determining the puncture angle under X-ray fluoroscopy, characterized in that, include: A support frame, the support frame comprising at least three support bars extending radially outward from the center, each support bar having a downwardly protruding leg at its outer end; A positioning frame, which is fixed to one of the support bars of the support frame, the positioning frame comprising a plurality of positioning bars that are radially spaced and can all be visualized under X-rays.

2. The spinal positioning frame according to claim 1, which can assist in determining the puncture angle under X-ray fluoroscopy, is characterized in that, Each of the positioning bars is in the shape of an arc with the center of the support frame as the center.

3. The spinal positioning frame according to claim 1, which can assist in determining the puncture angle under X-ray fluoroscopy, is characterized in that... Each of the positioning bars has multiple scale marks that protrude from at least one side and can be visualized under X-rays, distributed at intervals along its length.

4. The spinal positioning frame according to claim 3, which can assist in determining the puncture angle under X-ray fluoroscopy, is characterized in that... Each of the aforementioned scale marks protrudes from the outer side of the positioning strip.

5. The spinal positioning frame according to claim 1, which can assist in determining the puncture angle under X-ray fluoroscopy, is characterized in that, The positioning frames are all made of metal.

6. The spinal positioning frame according to any one of claims 1-5, which can assist in determining the puncture angle under X-ray fluoroscopy, is characterized in that, The middle portion of each positioning strip is directly fixed to the support strip.

7. The spinal positioning frame according to any one of claims 1-5, which can assist in determining the puncture angle under X-ray fluoroscopy, is characterized in that, The positioning frame further includes a sliding member that extends radially and is slidably mounted on the support bar, with the middle portion of each positioning bar fixed to the sliding member; It also includes an adjustment mechanism for driving the slider to slide along the support bar.

8. The spinal positioning frame according to claim 7, which can assist in determining the puncture angle under X-ray fluoroscopy, is characterized in that, The support bar is a square bar, and the sliding member is a square tube that is slidably sleeved outside the support bar.

9. The spinal positioning frame according to claim 7, which can assist in determining the puncture angle under X-ray fluoroscopy, is characterized in that, The adjustment mechanism includes: The fixing seat is fixed to the outer end of the support bar; Adjustment seat, the adjustment seat being fixed to the outer end of the sliding member; The driving component includes a lead screw portion extending radially and threadedly engaged with the adjusting seat, a mounting portion coaxially disposed at the outer end of the lead screw portion and rotatably mounted on the fixed seat, and a knob portion disposed at the outer end of the mounting portion.

10. The spinal positioning frame according to claim 7, which can assist in determining the puncture angle under X-ray fluoroscopy, is characterized in that, Each of the legs has a support plate at its lower end, and the support plate has an attachment part on its lower side.

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