Accurate puncture positioning device for minimally invasive surgery

Abstract

The invention provides a minimally invasive surgery precise puncture positioning device which comprises a stand column support, a first universal adjusting arm is fixedly installed at the upper end of the stand column support, one side of the first universal adjusting arm is connected with a first supporting arm, and the other side of the first supporting arm is fixedly connected with a second universal adjusting arm. The other side of the second universal adjusting arm is fixedly connected with a second supporting arm. The arc-shaped bevel protractor is arranged at the front end of the second supporting arm, the concave sliding block is embedded in the arc-shaped sliding groove of the arc-shaped bevel protractor, and the concave sliding block is fixedly connected with the puncture needle guide block, so that the axis of the puncture guide pipe can be accurately adjusted in the radian direction and locked at the target position; meanwhile, the first universal adjusting arm and the second universal adjusting arm which are sequentially connected to the stand column support provide space posture adjustment of two degrees of freedom of yawing and pitching, the arc-shaped angle ruler can be flexibly aligned with the reference plane of the body surface of the patient, and the accuracy of surgical puncture positioning is improved through combination of arc angle setting and space posture adjustment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a precise puncture positioning device for minimally invasive surgery. BACKGROUND

[0002] The percutaneous minimally invasive surgery generally relies on the setting of the skin entry point and the puncture path under the guidance of imaging (such as C-arm fluoroscopy). The existing common method is that the operator makes an instant judgment according to the body surface marks and the imaging, and then repeatedly adjusts the needle by hand to find the ideal approach angle; in some cases, a simple angle ruler, a tripod or a fixed-angle metal sleeve is used; In the existing minimally invasive surgery, the puncture approach relies on the experience of the operator and the imaging perspective for positioning. Due to the lack of stable and reliable mechanical guiding structure during the operation, the approach angle and direction of the puncture needle are often difficult to keep accurate and consistent, and the operator often needs to repeatedly adjust the needle and confirm by perspective, which is easy to cause approach deviation and even damage to the surrounding tissues; Therefore, a precise puncture positioning device for minimally invasive surgery is provided. SUMMARY

[0003] Therefore, the present application provides a precise puncture positioning device for minimally invasive surgery to solve or alleviate the technical problems in the prior art, and at least provides a beneficial option.

[0004] The technical scheme of the present application is as follows: a precise puncture positioning device for minimally invasive surgery, comprising The upper end of the column support is fixedly provided with a universal adjusting arm one, one side of the universal adjusting arm one is connected with a support arm one, the other side of the support arm one is fixedly connected with a universal adjusting arm two, and the other side of the universal adjusting arm two is fixedly connected with a support arm two. The other side of the support arm two away from the universal adjusting arm two is rotatably connected with a fixed shaft, so that the support arm two can be adjusted in pitch relative to the universal adjusting arm two. The front end of the support arm two is provided with an arc-shaped angle ruler, an arc-shaped sliding groove is formed in the arc direction of the arc-shaped angle ruler, a concave sliding block is embedded in and slidably connected with the arc-shaped sliding groove, and the concave sliding block is located on the inner arc side of the arc-shaped angle ruler and fixedly connected with a puncture needle guide block through a screw. The puncture needle guide block is triangularly arranged, through holes are formed in the opposite two sides, a puncture guide tube is detachably fixedly connected in the through hole, and the puncture needle is inserted in the direction corresponding to the angle of the arc-shaped angle ruler. The two ends of the arc-shaped angle ruler are respectively connected with a fixed plate through a bolt. The arc-shaped angle ruler is fixedly connected with the support arm two through a fixed plate.

[0005] Further preferably, the universal adjusting arm one comprises a housing and a slot arranged in the housing, a worm gear and a worm arranged in the slot and engaged with each other, and the worm is extended out of the housing and fixedly connected with a knob fastener.

[0006] Further preferably, rotating the knob fastener drives the worm to rotate to realize the micro-angle adjustment of the universal adjusting arm one relative to the column support, and the angle locking is realized by the self-locking of the worm gear and the worm and the axial pre-tightening of the knob fastener.

[0007] Further preferably, the universal adjusting arm two is connected with the support arm one as a first rotation pair, and the fixed shaft connects the universal adjusting arm two with the support arm two as a second rotation pair, and the rotation axes of the first rotation pair and the second rotation pair are intersected or substantially perpendicular to each other to realize the yaw and pitch two-degree-of-freedom adjustment, respectively.

[0008] Further preferably, one end of the arc-shaped angle ruler is provided with a lighting lamp through a fixing plate, and the optical axis of the lighting lamp is directed to the direction of the puncture guide tube to illuminate the puncture entrance and the target area on the body surface.

[0009] Further preferably, the outer edge of the arc-shaped angle ruler is provided with an angle scale, and the puncture needle guide block is provided with an indicating part corresponding to the angle scale to visually read the setting value of the abduction angle / head tilt angle.

[0010] Further preferably, the slot is adapted to the worm gear and the worm.

[0011] Further preferably, a limiting block is screw-connected to the fixing plate, and the limiting block is used to limit the stroke range of the puncture needle guide block in the arc-shaped sliding groove and prevent it from falling out.

[0012] The embodiment of the present application has the following advantages due to the adoption of the above technical solutions. The present application adjusts and locks the axis of the puncture guide tube in the target position by arranging the arc-shaped angle ruler at the front end of the support arm two, embedding the concave sliding block in the arc-shaped sliding groove of the arc-shaped angle ruler, and fixedly connecting the concave sliding block with the puncture needle guide block.

[0013] The above summary is intended to illustrate the application and is not intended to be limiting thereof. Further aspects, embodiments and features of the application will become apparent from the detailed description in conjunction with the accompanying drawings and the following description. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0015] Figure 1 is a schematic structural diagram of the main body of the present application; Figure 2 is a structural diagram of the arc-shaped sliding groove of the present application; Figure 3 is a structural diagram of the worm gear and worm of the present application; Figure 4 is a sectional structural diagram of the shell of the present application; Figure 5 is a structural diagram of the concave sliding block of the present application.

[0016] Reference signs: 1, stand support; 2, universal adjusting arm one; 21, shell; 22, slot; 23, worm gear; 24, worm; 25, knob fastener; 3, universal adjusting arm two; 4, support arm one; 5, support arm two; 8, fixed shaft; 10, arc-shaped angle ruler; 11, arc-shaped sliding groove; 12, concave sliding block; 13, puncture needle guide block; 131, puncture hole; 14, puncture guide tube; 15, fixed plate; 16, limiting block; 17, illuminating lamp. DETAILED DESCRIPTION

[0017] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0018] The embodiments of the present application will be described in detail below with reference to the drawings.

[0019] As Figures 1-5 shown, the micro-invasive surgery precise puncture positioning device provided by the embodiments of the present application comprises a stand support 1, a universal adjusting arm one 2, a support arm one 4, a universal adjusting arm two 3, a support arm two 5 and a fixed shaft 8. The front end of the support arm two 5 is provided with an arc angle ruler 10, the arc angle ruler 10 is provided with an arc-shaped sliding groove 11 along the arc direction, a concave sliding block 12 is slidingly matched in the arc-shaped sliding groove 11, the concave sliding block 12 is located at the inner arc side of the arc angle ruler 10 and is fixedly connected with the puncture needle guide block 13 through a screw, the puncture needle guide block 13 is triangular, through holes 131 are respectively formed in the opposite sides of the puncture needle guide block 13, a puncture guide tube 14 is detachably fixedly connected in the through hole 131, the two ends of the arc angle ruler 10 are respectively fixedly connected with the fixed plates 15 through bolts, one fixed plate 15 is fixedly connected with the arc angle ruler 10 and the support arm two 5, the fixed plate 15 is screw-connected with a limiting block 16, which is used for limiting the stroke range of the puncture needle guide block 13 in the arc-shaped sliding groove 11 and preventing the puncture needle guide block 13 from being pulled out, and the end of the arc angle ruler 10 is further provided with a lighting lamp 17 which is installed through the fixed plate 15 and whose optical axis is directed to the direction of the puncture guide tube 14, so as to illuminate the puncture entrance and the target area on the body surface.

[0020] The upright support 1 is fixedly connected with the universal adjusting arm one 2 at the upper end, one side of the universal adjusting arm one 2 is connected with the support arm one 4, the other side of the support arm one 4 is fixedly connected with the universal adjusting arm two 3, and the other side of the universal adjusting arm two 3 is fixedly connected with the support arm two 5.

[0021] The universal adjusting arm two 3 and the support arm two 5 form a rotating pair through the fixed shaft 8, so that the support arm two 5 can be adjusted in pitch relative to the universal adjusting arm two 3, preferably, the universal adjusting arm two 3 and the support arm one 4 further form another rotating pair, and the rotating axes of the two rotating pairs are intersected or substantially perpendicular to each other, so as to respectively realize the attitude adjustment of two degrees of freedom of yaw and pitch.

[0022] The arc angle ruler 10 is fixed at the front end of the support arm two 5, and the arc-shaped sliding groove 11 is a guide groove matched with the concave sliding block 12; the concave sliding block 12 is slidingly matched with the arc-shaped sliding groove 11 and is fixedly connected with the puncture needle guide block 13 through the screw located at the inner arc side, so that the puncture needle guide block 13 can be smoothly moved along the arc direction and reliably locked at the set angle.

[0023] The puncture needle guide block 13 is triangular, which is convenient for arranging two opposite puncture through holes 131 in a compact space; the puncture guide tube 14 is detachably fixed in the selected puncture through hole 131, and the other puncture through hole 131 is used for reverse access or left-right switching.

[0024] The two ends of the arc angle ruler 10 are respectively fixedly connected with the fixed plates 15 through bolts, one fixed plate 15 is fixedly connected with the support arm two 5, which is used for keeping the overall positioning stable after the angle and attitude adjustment are completed; the limiting block 16 can be arranged on the fixed plate 15 and protrude to the end of the arc-shaped sliding groove 11, which limits the stroke of the puncture needle guide block 13; the lighting lamp 17 can be installed at one end of the arc angle ruler 10 through the fixed plate 15, and the light beam of the lighting lamp 17 is directed to the axis direction of the puncture guide tube 14.

[0025] The universal adjusting arm one 2 comprises a shell 21 and a slot 22 arranged in the shell 21, the slot 22 forms an installation cavity for accommodating and keeping the worm wheel 23 and the worm 24 in engagement; one end of the worm 24 extends out of the shell 21 and is fixedly connected with a knob fastener 25, the operator rotates the knob fastener 25 to drive the worm 24 to rotate, thereby realizing the micro-angle adjustment of the universal adjusting arm one 2 relative to the column support 1, the self-locking engagement of the worm wheel 23 and the worm 24 and the axial pre-tightening of the knob realize the angle locking.

[0026] In the working process of the present application: The column support 1 is fixed on the side of the operating bed or the base, and the universal adjusting arm one 2, the support arm one 4, the universal adjusting arm two 3 and the support arm two 5 are adjusted to be unfolded, so that the arc angle ruler 10 is close to the operating area, and the stroke is reserved for subsequent posture alignment.

[0027] The rotating pair formed by the universal adjusting arm two 3 and the support arm two 5 through the fixed shaft 8 is used for pitch adjustment; the rotating pair between the universal adjusting arm two 3 and the support arm one 4 is used for yaw adjustment, the axes of the two rotating pairs intersect or are approximately orthogonal, so that the arc surface of the arc angle ruler 10 can be substantially coplanar with the reference plane of the patient's back, and the significance of the subsequent arc angle setting is ensured.

[0028] When fine adjustment is needed, the operator rotates the knob fastener 25 on the shell 21 of the universal adjusting arm one 2 to drive the worm 24 in the slot 22 to rotate and engage with the worm wheel 23, thereby realizing the fine angle correction of the arm segment relative to the column, the engagement transmission of the worm 24 with the worm wheel 23 has the self-locking characteristic, and the axial pre-tightening of the knob fastener 25 can keep the posture stable against external disturbance after the hand is released, and the posture will not be driven back by the puncture reaction force.

[0029] The arc angle ruler 10 is provided with an arc-shaped sliding groove 11 in the arc direction, a concave sliding block 12 is in sliding cooperation with the arc-shaped sliding groove 11 and is fixedly connected with a puncture needle guide block 13 through a screw, and the operator moves the puncture needle guide block 13 to the target angle scale along the arc direction, so that the puncture needle guide block 13 is stably locked at an arbitrary angle position on the arc through the cooperation of the concave sliding block 12.

[0030] The puncture needle guide block 13 is triangular, through holes 131 are formed in the opposite two sides of the puncture needle guide block 13, the puncture guide tube 14 matched with the needle diameter is detachably fixed in the through hole according to the selection of the left / right approach, and the tube axis of the puncture guide tube 14 is collinearly aligned with the arc angle set by the arc-shaped angle ruler 10.

[0031] The arc-shaped angle ruler 10 is fixed at both ends by a bolt assembly fixed plate 15; a fixed plate 15 rigidly connects the angle ruler and the support arm 2, providing force bearing and anti-twist of the overall structure after the posture and arc angle are set. The fixed plate 15 can be screwed with a limiting block 16, which protrudes to the end of the arc-shaped sliding groove 11, limiting the sliding boundary of the puncture needle guide block 13, avoiding overtraveling out of the groove during transportation or adjustment.

[0032] When equipped with a lighting lamp 17, it is installed at one end of the angle ruler through the fixed plate 15, with its optical axis pointing to the axial direction of the puncture guide tube 14, providing directional near coaxial illumination, enhancing the visibility of the puncture entrance and the area in front of the needle body, and reducing the interference of the needle body shadow.

[0033] Under the perspective cooperation, the puncture needle is pushed through the puncture guide tube 14, which is a metal thin-walled hollow part. If fine adjustment of the needle tip landing point is needed, the fine adjustment puncture needle guide block 13 can be slightly released, moved slightly along the arc direction, the angle is quickly corrected, and the puncture needle is pushed again.

[0034] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A minimally invasive surgical precise puncture positioning device, characterized in that: Comprising The upper end of the column support (1) is fixedly installed with a universal adjusting arm one (2), one side of the universal adjusting arm one (2) is connected with a support arm one (4), the other side of the support arm one (4) is fixedly connected with a universal adjusting arm two (3), the other side of the universal adjusting arm two (3) is fixedly connected with a support arm two (5); The side of the support arm two (5) away from the universal adjusting arm two (3) is rotatably connected with a fixed shaft (8), so that the support arm two (5) is adjusted in pitch relative to the universal adjusting arm two (3); The front end of the support arm two (5) is provided with an arc angle scale (10), the arc angle scale (10) is provided with an arc-shaped sliding groove (11) along the arc direction, the arc-shaped sliding groove (11) is embedded and slidably connected with a concave sliding block (12), the concave sliding block (12) is located on the inner arc side of the arc angle scale (10) and is fixedly connected with a puncture needle guide block (13) through a screw; The puncture needle guide block (13) is triangularly arranged, and through holes (131) are formed in the opposite two sides, a puncture guide tube (14) is detachably fixed in the through holes (131), so that the puncture needle is inserted in the direction corresponding to the angle of the arc angle scale (10); Both ends of the arc angle scale (10) are fixedly connected with a fixed plate (15) through bolts; The arc angle scale (10) is fixedly connected with the support arm two (5) through a fixed plate (15).

2. The minimally invasive surgical precise puncture positioning device according to claim 1, characterized in that: The universal adjusting arm one (2) comprises an outer shell (21) and a slot (22) arranged in the outer shell (21), a worm wheel (23) and a worm (24) are arranged in the slot (22) and are engaged with each other, one end of the worm (24) extends out of the outer shell (21) and is fixedly connected with a knob fastener (25).

3. The minimally invasive surgical precise puncture positioning device according to claim 2, characterized in that: Rotating the knob fastener (25) drives the worm (24) to rotate to realize the micro-angle adjustment of the universal adjusting arm one (2) relative to the column support (1), and the angle locking is realized by the self-locking of the worm wheel (23) and the worm (24) and the axial pre-tightening of the knob fastener (25).

4. The minimally invasive surgical precise puncture positioning device according to claim 1, characterized in that: The universal adjusting arm two (3) and the support arm one (4) are connected as a first rotary pair, the fixed shaft (8) connects the universal adjusting arm two (3) and the support arm two (5) as a second rotary pair, and the rotation axes of the first rotary pair and the second rotary pair intersect or are substantially perpendicular to each other to realize the adjustment of two degrees of freedom of yaw and pitch, respectively.

5. The minimally invasive surgical precise puncture positioning device according to claim 1, wherein: One end of the arc angle scale (10) is provided with an illuminating lamp (17) through a fixed plate (15), and the optical axis of the illuminating lamp (17) points to the direction of the puncture guide tube (14) to illuminate the puncture entrance and the target area on the body surface.

6. The minimally invasive surgical precise puncture positioning device according to claim 1, wherein: The outer edge of the arc angle scale (10) is provided with an angle scale, and the puncture needle guide block (13) is provided with an indicating part corresponding to the angle scale for directly reading the setting value of the abduction angle / tonic angle.

7. The minimally invasive surgical precise puncture positioning device according to claim 1, wherein: The slot (22) is adapted to the worm wheel (23) and the worm (24).

8. The minimally invasive surgical precise puncture positioning device according to claim 1, wherein: The fixed plate (15) is screwed with a limiting block (16), which is used to limit the stroke range of the puncture needle guide block (13) in the arc-shaped sliding groove (11) and prevent it from falling out.

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