Puncture assist device for minimally invasive surgery under CT (Computed Tomography) positioning

Abstract

The utility model belongs to the technical field of puncture assisting devices, and provides a minimally invasive surgery puncture assisting device under CT (Computed Tomography) positioning, which comprises a measuring scale and a coarse adjustment mechanism arranged on the measuring scale in a sliding manner, the coarse adjustment mechanism 50 comprises a coarse adjustment sliding block installed on the measuring scale in a sliding mode, a sliding block is further arranged on the inner side of the coarse adjustment sliding block, a clamping block is further arranged at the front end of the sliding block, a sleeve is arranged on the inner side of the clamping block in a clamped mode, an extension rod is further fixedly arranged at the bottom of the measuring scale, and the sleeve is rotationally connected with the extension rod. The coarse adjustment sliding block is used for adjusting the casing pipe at a large angle; a tooth groove is further formed in the bottom of the sliding block, a fine adjustment mechanism is further fixedly arranged on the lower portion of the coarse adjustment sliding block, and the fine adjustment mechanism is arranged and can conduct small-amplitude angle adjustment on the cannula, so that the adjustment precision of the cannula is improved, the puncture position can be located more accurately, and the success rate of a puncture operation is increased.

Description

Technical Field

[0001] This utility model belongs to the technical field of puncture assist devices, and specifically relates to a puncture assist device for minimally invasive surgery under CT guidance. Background Technology

[0002] With the establishment and development of pain management departments in my country and the application of technologies such as radiofrequency and plasma, minimally invasive pain surgery is increasing. Consequently, the difficulty and risk of punctures during surgery or treatment are also increasing, especially for minimally invasive surgeries involving the head, neck, and thoracic segments. To reduce surgical risks, improve puncture accuracy and efficiency, and increase patient satisfaction, most procedures are currently performed under CT guidance, but there is a lack of auxiliary equipment for precise puncture.

[0003] Chinese utility model patent, publication number CN221512102U, entitled "A Puncture Positioner," discloses a puncture positioner, mainly comprising a positioning plate fixedly installed on the patient's body near the lesion. The positioning plate has scale markings, and a slide rail is provided on one side of the scale markings. A clamping assembly is located at the bottom of the positioning plate and is used to fix the positioning plate. While this solves the puncture positioning problem, the adjustment precision cannot be guaranteed. For some minute angles, the above technical solution cannot be adjusted. Therefore, we propose a CT-guided minimally invasive surgical puncture assistor that can guarantee adjustment precision. Utility Model Content

[0004] This invention proposes a CT-guided minimally invasive surgical puncture assist device, which solves the problems in the prior art.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A CT-guided minimally invasive surgical puncture assist device includes a measuring scale and a coarse adjustment mechanism that is slidably mounted on the measuring scale.

[0007] The coarse adjustment mechanism 50 includes a coarse adjustment slider that is slidably mounted on a measuring scale. A sliding block is also provided on the inner side of the coarse adjustment slider. A clamping block is also provided at the front end of the sliding block. A sleeve is clamped on the inner side of the clamping block. An extension rod is also fixedly provided on the side wall of the measuring scale. The sleeve and the extension rod are rotatably connected. The coarse adjustment slider is used to adjust the larger angle of the sleeve.

[0008] The bottom of the sliding block is also provided with a toothed groove, and a fine adjustment mechanism is fixedly provided at the lower part of the coarse adjustment slider. The fine adjustment mechanism includes a gear that meshes with the toothed groove, and a driving component that drives the gear to rotate. The fine adjustment mechanism is used to adjust the sleeve at a small angle.

[0009] Furthermore, the measuring scale is also provided, and the coarse adjustment slider is preferably made of transparent material.

[0010] Furthermore, the clamping block includes a first clamping block and a second clamping block, which are combined to form a clamping groove. The sleeve is clamped in the clamping groove, and a hollow groove is also provided inside the sleeve for the passage of the puncture device.

[0011] Furthermore, a fixing bolt is threadedly connected to the inner top of the coarse adjustment slider.

[0012] Furthermore, the driving component also includes a housing, a fine-tuning worm gear inside the housing, the fine-tuning worm gear being coaxially arranged with a gear, a fine-tuning worm being engaged at the bottom of the fine-tuning worm gear, a connecting rod being fixedly arranged inside the fine-tuning worm, and a lever being fixedly connected to one end of the connecting rod.

[0013] Furthermore, the shaft through which the fine-tuning worm gear and gear are fitted together is also rotatably connected to the inner side of the coarse-tuning slider, and the connecting rod extends and passes through the outer shell, with the connecting rod and the outer shell being rotatably connected.

[0014] Furthermore, the outer shell is also provided with a clearance groove, and the toothed groove can rotate freely along the clearance groove.

[0015] Furthermore, the sliding block is concentrically positioned with the measuring ruler.

[0016] Furthermore, the measuring ruler is also equipped with a foot at the bottom, and the upper surface of the foot is covered with a grid sticker.

[0017] Furthermore, an adjustment mechanism is provided on the upper surface of the foot pad and at both ends of the measuring scale. The adjustment mechanism includes an adjustment seat fixedly mounted on the upper surface of the foot pad. An adjustment wheel and a rotating block are fixedly mounted on both ends of the measuring scale, respectively. A long gear is meshed at the lower end of the adjustment wheel. An adjustment worm gear is coaxially mounted on the long gear. An adjustment worm gear meshes with an adjustment worm. A shaft is fixedly inserted inside the adjustment worm. The shaft is rotatably connected to the adjustment seat. An adjustment rod is fixedly connected to the end of the shaft. The rotating block is rotatably mounted in the corresponding adjustment seat.

[0018] After adopting the above technical solution, the beneficial effects of this utility model are:

[0019] In this invention, a fine-tuning mechanism is provided, which can make small-amplitude angle adjustments to the cannula, thereby improving the adjustment accuracy of the cannula, enabling more precise positioning of the puncture site, and improving the success rate of the puncture surgery.

[0020] In this invention, by providing an adjustment mechanism, the tilt angle of the measuring ruler can be adjusted, making the puncture operation more convenient. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of a CT-guided minimally invasive surgical puncture assist device according to the present invention;

[0023] Figure 2 for Figure 1 A magnified schematic diagram of the local structure at point A;

[0024] Figure 3 This is a schematic diagram of the enlarged structure of the fine-tuning mechanism;

[0025] Figure 4 This is a schematic diagram of the internal structure of the fine-tuning mechanism;

[0026] Figure 5 This is a schematic diagram of the first structure of the adjustment mechanism;

[0027] Figure 6 This is a schematic diagram of the second structure of the adjustment mechanism;

[0028] Figure 7 This is a schematic diagram of the third structure of the adjustment mechanism;

[0029] Figure 8 A schematic diagram of the puncture assist device for minimally invasive surgery under CT guidance;

[0030] Figure 9 This is a schematic diagram of the angle change structure of the puncture assist device in minimally invasive surgery under CT guidance.

[0031] In the diagram, 10 is a measuring ruler; 20 is a foot pad; 21 is a grid sticker; 30 is an extension rod; 40 is a sleeve; 41 is a hollow groove; 50 is a coarse adjustment mechanism; 501 is a coarse adjustment slider; 502 is a fixing bolt; 503 is a sliding block; 5031 is a toothed groove; 504 is a first clamping block; 505 is a second clamping block; 60 is a fine adjustment mechanism; 601 is a housing; 602 is a fine adjustment worm gear; 603 is a gear; 604 is a fine adjustment worm; 605 is a connecting rod; 606 is a lever; 607 is a clearance groove; 70 is an adjustment mechanism; 701 is an adjustment seat; 702 is an adjustment wheel; 703 is a long gear; 704 is an adjustment worm gear; 705 is an adjustment worm; 706 is an adjustment rod; and 707 is a rotating block. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example: Figure 1-2 As shown, a CT-guided minimally invasive surgical puncture assistant includes a measuring ruler 10. The bottom of the measuring ruler 10 is also equipped with a foot 20, and the upper surface of the foot 20 is also covered with a grid sticker 21. In addition, both ends of the measuring ruler 10 are provided with adjustment mechanisms 70 for adjusting the front and rear tilt angle of the measuring ruler 10.

[0034] The measuring ruler 10 is also engraved with angles, and the coarse adjustment slider 501 can be made of transparent material to make it easy to observe the angles.

[0035] A coarse adjustment mechanism 50 is also slidably provided on the outside of the measuring scale 10. The coarse adjustment mechanism 50 includes a coarse adjustment slider 501 slidably provided on the outside of the measuring scale 10. A fixing bolt 502 is threadedly connected to the inner side of the top of the coarse adjustment slider 501. The fixing bolt 502 is used to help the coarse adjustment slider 501 stop. When the bottom of the fixing bolt 502 does not abut against the top outer wall of the measuring scale 10, the coarse adjustment slider 501 can slide.

[0036] A sliding block 503 is slidably provided on the inner side of the coarse adjustment slider 501. The sliding block 503 is used for fine adjustment. A first clamping block 504 and a second clamping block 505 are fixedly provided at the front end of the sliding block 503. The second clamping block 505 is fixedly installed at the front end of the first clamping block 504. The two clamping blocks merge to form a clamping groove. A sleeve 40 is installed in the clamping groove. A hollow groove 41 is opened in the sleeve 40 for the puncture instrument to pass through. An extension rod 30 is provided at the lower end of the sleeve 40. The part of the extension rod 30 that contacts the sleeve 40 allows the sleeve 40 to rotate relative to the measuring scale 10. The other end of the extension rod 30 is fixedly installed on the side wall of one end of the measuring scale 10.

[0037] In addition, a fine adjustment mechanism 60 is provided on the coarse adjustment slider 501. The fine adjustment mechanism 60 helps the slider 503 to make fine adjustments. The slider 503 and the measuring scale 10 are concentrically set. The fine adjustment mechanism 60 can be used to help the sleeve 40 to make fine adjustments to the angle, thereby improving accuracy.

[0038] in, Figure 2 and Figure 4As shown, the fine-tuning mechanism 60 includes a housing 601 fixed to the coarse-tuning slider 501. A gear 603 is installed inside the housing 601. A fine-tuning worm gear 602 is concentrically arranged with the gear 603. A fine-tuning worm 604 meshes with the lower end of the fine-tuning worm gear 602. A connecting rod 605 is fixedly inserted into the inner side of the fine-tuning worm 604. One end of the connecting rod 605 is fixedly connected to a lever 606. Based on the above-mentioned components, the slider 503 can be fine-tuned. Specifically, by moving the lever 606, the slider can be adjusted. The rod 606 drives the fine-tuning worm 604 to rotate via the connecting rod 605. The fine-tuning worm 604 then drives the fine-tuning worm wheel 602 to rotate. Since the fine-tuning worm wheel 602 is coaxially set with the gear 603, it drives the gear 603 to rotate together. A toothed groove 5031 is also provided at the lower end of the sliding block 503, corresponding to the gear 603. The gear 603 and the toothed groove 5031 mesh with each other. The gear 603 can drive the toothed groove 5031 to rotate slightly, thereby adjusting the small angle of the sleeve 40 to ensure accuracy.

[0039] In addition, in order to position the gear 603, the fine-tuning worm gear 602, the fine-tuning worm 604, and the lever 606, the common shaft of the gear 603 and the fine-tuning worm gear 602 is rotatably set inside the coarse-tuning slider 501, while the connecting rod 605, which is connected to the fine-tuning worm 604 and the lever 606, passes through the housing 601. The connecting rod 605 and the housing 601 are rotatably connected. Selecting the fine-tuning worm gear 602 and the fine-tuning worm 604 can also achieve a self-locking function.

[0040] Among them, such as Figure 3 As shown, in order not to affect the rotation of the sliding block 503, a clearance groove 607 is also provided on the outer shell 601, and the toothed groove 5031 can pass through the clearance groove 607 to rotate freely.

[0041] Among them, such as Figure 5-9As shown, the adjustment mechanism 70 includes an adjustment seat 701 fixedly mounted on the upper surface of the foot 20. Rotating blocks 707 and adjusting wheels 702 are fixedly mounted at both ends of the measuring scale 10, respectively. A long gear 703 is meshed at the lower end of the adjusting wheel 702. An adjusting worm gear 704 is coaxially mounted with the long gear 703. The adjusting worm gear 704 meshes with an adjusting worm 705. A shaft is fixedly inserted into the inner side of the adjusting worm 705, and the shaft is rotatably connected to the adjustment seat 701. An adjusting rod 706 is fixedly connected to the end of the shaft. By moving the adjusting rod 706, the adjusting worm 705 is driven to rotate, thus driving the adjusting worm 705 to rotate. The worm gear 704 rotates, causing the long gear 703, coaxial with the worm gear 704, to rotate. This causes the adjusting wheel 702, meshing with the top of the long gear 703, to rotate, thereby achieving fine adjustment of the measuring scale 10's front and rear positions. The shaft, which is fixedly sleeved with the worm gear 704 and the long gear 703, is also rotatably connected to the adjusting seat 701. The rotating block 707 is rotatably mounted inside the corresponding adjusting seat 701, adapting to the rotation along with the adjusting wheel 702. Furthermore, the adjusting seat 701 corresponding to the extension rod 30 also has a rotating groove for the extension rod 30 to rotate. Through the above operations, the measuring scale 10 can be rotated to both sides. Figure 9 The diagram shows the state of rotation to one side;

[0042] This puncture assist device also requires the use of CT scans to first locate the puncture site, specifically...

[0043] Step 1: First, measure the required puncture angle using a CT scanner;

[0044] Step 2: Measure the angle using a protractor or other device that can measure angles, or you can directly place the aforementioned puncture assist device on the CT scan, adjust the angle according to the angle on the CT scan, and lock it.

[0045] Step 3: After disinfecting and draping, take out the puncture needle and insert it directly into the hollow groove 41.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A CT positioning minimally invasive surgery puncture assist device, characterized in that, It comprises a scale (10) and a coarse adjustment mechanism (50) slidingly arranged on the scale (10); The coarse adjustment mechanism (50) comprises a coarse adjustment slider (501) slidingly arranged on the scale (10), and a sliding block (503) arranged on the inner side of the coarse adjustment slider (501), wherein the front end of the sliding block (503) is provided with a clamping block, the inner side of the clamping block is clamped with a sleeve (40), an extension rod (30) is fixedly arranged on the side wall of the scale (10), and the sleeve (40) is rotationally connected with the extension rod (30); the coarse adjustment slider (501) is used for adjusting the sleeve (40) by a large angle. The bottom of the sliding block (503) is also provided with a gear slot (5031), and a fine adjustment mechanism (60) is fixedly arranged on the lower part of the coarse adjustment slider (501), wherein the fine adjustment mechanism (60) comprises a gear (603) arranged in mesh with the gear slot (5031), and a driving member for driving the gear (603) to rotate; the fine adjustment mechanism (60) is used for adjusting the sleeve (40) by a small angle.

2. The CT-located minimally invasive surgery puncture assist of claim 1, wherein, The scale (10) is also provided with a scale, and the coarse adjustment slider (501) is made of transparent material.

3. The CT-located minimally invasive surgery puncture assist of claim 1, wherein, The clamping block comprises a first clamping block (504) and a second clamping block (505), the first clamping block (504) and the second clamping block (505) are combined with each other to form a clamping groove, and the sleeve (40) is clamped in the clamping groove; a hollow groove (41) is also formed in the sleeve (40) and is used for passing through the puncture device.

4. The CT-located minimally invasive surgery puncture assist of claim 1, wherein, The inner side of the top of the coarse adjustment slider (501) is also provided with a fixing bolt (502) in threaded connection.

5. The CT-located minimally invasive surgery puncture assist of claim 1, wherein, The driving member further comprises a housing (601), a fine adjustment worm gear (602) in the housing (601), the fine adjustment worm gear (602) is coaxially arranged with the gear (603), the bottom of the fine adjustment worm gear (602) is also meshed with a fine adjustment worm (604), the inner side of the fine adjustment worm (604) is also fixedly provided with a connecting rod (605), and one end of the connecting rod (605) is also fixedly connected with a lever (606).

6. The CT positioning minimally invasive surgery puncture assist of claim 5, wherein, The shafts of the fine adjustment worm gear (602) and the gear (603) are also rotationally connected to the inner side of the coarse adjustment slider (501), the connecting rod (605) extends through the housing (601) and is rotationally connected with the housing (601).

7. The CT-located minimally invasive surgery puncture assist of claim 5, wherein, The housing (601) is also provided with an avoiding groove (607), and the gear slot (5031) is freely rotatable along the avoiding groove (607).

8. The CT-located minimally invasive surgery puncture assist of claim 1, wherein, The sliding block (503) is concentrically arranged with the scale (10).

9. The CT-located minimally invasive surgery puncture assist of claim 1, wherein, The bottom of the scale (10) is also provided with a foot pad (20), and the upper surface of the foot pad (20) is paved with a mat (21).

10. The CT positioning minimally invasive surgery puncture assist of claim 9, wherein, The upper surface of the foot pad (20) and the ruler (10) two ends are further provided with adjusting mechanism (70), the adjusting mechanism (70) includes fixedly arranged on the foot pad (20) upper surface adjusting seat (701), the ruler (10) two ends end portion is fixedly installed with adjusting wheel (702) and rotating block (707) respectively, wherein, the lower end of adjusting wheel (702) is engaged with long gear (703), the long gear (703) is further coaxially provided with adjusting worm wheel (704), the adjusting worm wheel (704) is further engaged with adjusting worm (705), the inside of adjusting worm (705) is further fixedly inserted with shaft body, the shaft body is rotatably connected between adjusting seat (701), the shaft body terminal is fixedly connected with adjusting rod (706), the rotating block (707) is rotatably arranged in the corresponding adjusting seat (701).

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