A positioning puncture guide instrument

Abstract

The present invention discloses a positioning puncture guide instrument, which includes: a plurality of tightening blocks, one end of the plurality of tightening blocks overlaps each other or overlaps two by two; a locking assembly, the locking assembly is installed at the overlapping end of the plurality of tightening blocks, and a single tightening block can rotate with the locking assembly as the origin; a pressing assembly is installed at the other end of the plurality of tightening blocks, and the pressing assembly is pressed against the surface of the human brain with the tightening block as the fulcrum; at least one guide mechanism, the guide mechanism is slidably installed on one of the plurality of tightening blocks; the guide mechanism is provided with a guide hole for guiding the puncture needle. When the tightening block restricts the operation of the puncture needle, the locking assembly and the pressing assembly are loosened, one or more tightening blocks are rotated around the overlapping end to other positions, and then the locking assembly is locked; in this way, there is no need to lift the entire device, which solves the problem in the prior art that the entire device needs to be lifted laboriously to change the position, the arm of the person who lifts it for a long time is sore, and the labor intensity is high when using it.

Description

Technical Field

[0001] The invention belongs to the field of brain surgery equipment and relates to a positioning puncture guide instrument. Background Art

[0002] When fluid accumulation occurs in the brain, such as cerebral hematoma, hemocerebral effusion, etc., the brain needs to be punctured to drain the fluid out of the brain. During the brain puncture operation, in order to avoid excessive cerebral hemorrhage, resulting in hemiplegia or other neurological signs, the number of punctures should be reduced as much as possible and the accuracy of the puncture position should be ensured;

[0003] Chinese patent application number CN2017106673475 discloses an intracerebral hematoma puncture guide instrument that can achieve precise positioning. During use, sometimes the position of the double-fork base and the single-fork slide ruler limits the operation of the puncture needle. In this case, it is necessary to loosen or tighten the bone screws on the double-fork base and the single-fork slide ruler, and then lift the entire device with great effort to change the position. Since the puncture point needs to be precisely positioned, it takes a long time to lift the entire device, resulting in sore arms of the person lifting the device, and high labor intensity when changing the position of the entire device. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a positioning puncture guide instrument.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a positioning puncture guide instrument, which includes: a plurality of tight hoop blocks, one end of the plurality of tight hoop blocks overlaps with each other or overlaps in pairs;

[0007] A locking assembly, which is mounted on the overlapping ends of a plurality of tightening blocks, and a single tightening block can rotate with the locking assembly as an origin;

[0008] The other ends of the multiple clamping blocks are respectively provided with clamping components, and the clamping components are clamped on the surface of the human brain with the clamping blocks as fulcrums;

[0009] At least one guide mechanism is slidably mounted on one of the plurality of tightening blocks, and the guide mechanism itself can rotate and slide simultaneously along two mutually perpendicular axes; the guide mechanism is provided with a guide hole for guiding the puncture needle.

[0010] The tightening block can be an integral structure with good strength, or a split structure that is easy to disassemble, assemble and replace.

[0011] There are at least three tightening blocks, and the overlapping ends of the upper tightening block and the middle tightening block, and the overlapping ends of the middle tightening block and the lower tightening block are respectively locked by the locking assembly. When the locking assembly is loosened, the upper tightening block and the middle tightening block can rotate with the locking assembly as the rotating axis, and the middle tightening block and the lower tightening block can rotate with the locking assembly as the rotating axis. When the upper tightening block and the lower tightening block restrict the operation of the puncture needle, it is sufficient to rotate a single or multiple tightening blocks, which solves the problem in the prior art that the entire device needs to be lifted laboriously.

[0012] The locking assembly includes a butterfly screw and a nut. The three tightening blocks are provided with through holes. The screw body of the butterfly screw passes through the through holes corresponding to each other in the three tightening blocks and then screws together with the nut to complete the locking of the two through holes. When the two tightening blocks need to be loosened, the butterfly screw and the nut are unscrewed, and the tightening blocks can rotate around the overlapping ends.

[0013] The overlapping ends of the three tightening blocks are provided with corresponding through holes for installing butterfly screws. The butterfly screws are connected to nuts after being passed through the through holes of the overlapping ends of the three tightening blocks. The three tightening blocks rotate around one butterfly screw. Only one butterfly screw needs to be unscrewed or screwed in to complete the loosening or tightening operation of the three tightening blocks, which improves the speed of operation. When installed, one of the clamping components on the three tightening blocks is always pressed against the part between the nose bridge and the eyebrows of the human brain to ensure the basic positioning of the puncture needle.

[0014] The clamping assembly ends of the multiple tightening blocks are installed flush or unevenly, and the clamping assemblies on one end of the three tightening blocks are in three-point contact with the human brain to form a supporting plane, so that the guide mechanism can stably guide the puncture needle in the guide hole.

[0015] The clamping assembly is a butterfly screw, and threaded through holes are provided on the clamping block and the clamping assembly. The butterfly screw is screwed into the threaded through hole to complete the contact and clamping of the outer surface of the human brain.

[0016] The upper edge and / or side edge of the tightening block are provided with a slide rail; the guiding mechanism comprises a slider, a moving part A, a moving part B, a clamping part A, a clamping part B, a guide hole part A, and a guide hole part B; the slider is provided with a slide groove cooperating with the slide rail, the slider can controllably slide on the slide rail on the tightening block, one end of the moving part A is controllably rotatably and slidably installed on the slider; one end of the moving part B is controllably rotatably and slidably installed on the other end of the moving part A; one end of the clamping part A is fixedly connected to the other end of the moving part B, one end of the clamping part B is hinged to one end of the clamping part A, and the other end of the clamping part B is detachably and fixedly connected to the other end of the clamping part A, and the opposite surfaces of the clamping part B and the clamping part A are provided with grooves, and the grooves of the clamping part B and the clamping part A form a channel for the guide hole part A and the guide hole part B to slide after being engaged, and the opposite surfaces of the guide hole part A and the guide hole part B are provided with grooves, and the grooves of the guide hole part A and the guide hole part B form a guide hole for guiding the puncture needle.

[0017] The slider is provided with threaded through holes for screwing butterfly screws on the corresponding clamping block and the body of the moving part A, and the slider is provided with a through hole for installing the moving part A. After being screwed into the threaded through hole, the slider is pressed against the slide rail surface of the clamping block to control the sliding of the slider on the slide rail; after the butterfly screw is screwed into the threaded through hole, the moving part A is pressed against the slider to control the movement and rotation of the moving part A on the slider.

[0018] The moving part A is provided with a through hole for installing the moving part B; the moving part A is provided with a threaded through hole corresponding to the moving part B, and the butterfly screw is screwed into the threaded through hole to press the moving part B tightly, thereby controlling the sliding and rotation of the moving part B on the moving part A.

[0019] The beneficial effects of the present invention are as follows: when one or more tightening blocks restrict the operation of the puncture needle, the locking assembly and the pressing assembly are loosened, one or more tightening blocks are rotated around the overlapping ends to other positions, and then the locking assembly is locked, the pressing assembly presses the outer skin of the human brain, and the other tightening blocks remain fixed on the outer skin of the human brain; in this way, there is no need to lift the entire device, which solves the problem in the prior art that the entire device needs to be lifted laboriously to change the position, the arm of the person lifting for a long time is sore, and the labor intensity is high when using it;

[0020] When the puncture needle needs to adjust the inclination angle and position, the position of the slide block on the slide rail of different clamp blocks is adjusted, and the moving parts A and B are adjusted at the same time, so that the puncture needle can be guided to form a straight line with the point on the human brain under the action of the guide hole formed by the groove of the guide hole part A and the guide hole part B, so that the puncture can be completed at one time and a channel can be established on the brain. Compared with the prior art disclosed in the patent in the background technology, the puncture needle can quickly obtain the required inclination and position. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the present invention is schematically shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the present invention is schematically shown in FIG. Figure 2 ;

[0023] Figure 3 yes Figure 2 A local enlarged schematic diagram of the middle A;

[0024] Figure 4 It is an exploded schematic diagram of the connection of the moving part B, the clamping part A, the clamping part B, the guide hole part A, and the guide hole part B of the present invention.

[0025] In the figure: 1-tightening block; 11-slide rail; 12-locking assembly; 2-guide mechanism; 21-slider; 22-moving part A; 23-moving part B; 24-clamping part A; 25-clamping part B; 26-guide hole part A; 27-guide hole part B; 3-puncture needle; 4-human brain; 5-pressing assembly. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0027] See also Figures 1 to 4 shown.

[0028] A positioning puncture guide instrument of the present invention comprises: a plurality of tight hoop blocks 1, one end of the plurality of tight hoop blocks 1 overlaps with each other or overlaps in pairs;

[0029] A locking assembly 12, the locking assembly 12 is installed at the overlapping ends of the multiple tightening blocks 1, when the locking assembly 12 locks the multiple tightening blocks 1, the positions of the multiple tightening blocks 1 are fixed, when the locking assembly 12 loosens the multiple tightening blocks 1, a single tightening block 1 can rotate with the locking assembly 12 as the origin;

[0030] The other ends of the multiple clamping blocks 1 are respectively installed with clamping components 5, and the clamping components 5 are pressed against the surface of the human brain 4 with the clamping blocks 1 as fulcrums;

[0031] At least one guide mechanism 2 is slidably mounted on one of the plurality of tightening blocks 1 , and the guide mechanism 2 itself can simultaneously rotate and slide along two mutually perpendicular axes; the guide mechanism 2 is provided with a guide hole for guiding the puncture needle 3 .

[0032] Working principle: when one or more tightening blocks 1 restrict the operation of the puncture needle 3, the locking assembly 12 and the pressing assembly 5 are loosened, and one or more tightening blocks 1 are rotated to other positions around the overlapping ends, and then the locking assembly 12 is locked, and the pressing assembly 5 presses the outer skin of the human brain 4, and the other tightening blocks 1 remain fixed on the outer skin of the human brain 4; in this way, there is no need to lift the entire device, which solves the problem in the prior art that the entire device needs to be lifted laboriously to change its position, the arm of the person lifting it for a long time is sore, and the labor intensity is high when using it.

[0033] The inner surface of the tightening block 1 can be an arc shape that matches the human brain 4 to improve the spatial fit; the tightening block 1 can also be other shapes as long as the tightening block 1 can rotate around the outer circumference of the human brain 4.

[0034] The tightening block 1 can be an integral structure with good strength, or a split structure that is easy to disassemble, assemble and replace.

[0035] There are at least three tightening blocks 1, and the overlapping ends of the upper tightening block 1 and the middle tightening block 1, and the overlapping ends of the middle tightening block 1 and the lower tightening block 1 are respectively locked by the locking assembly 12. When the locking assembly 12 is loosened, the upper tightening block 1 and the middle tightening block 1 can rotate with the locking assembly 12 as the rotating axis, and the middle tightening block 1 and the lower tightening block 1 can rotate with the locking assembly 12 as the rotating axis. When the upper tightening block 1 and the lower tightening block 1 restrict the operation of the puncture needle 3, it is sufficient to rotate a single or multiple tightening blocks 1, which solves the problem in the prior art that the entire device needs to be lifted laboriously.

[0036] The locking assembly 12 includes a butterfly screw and a nut. The three tightening blocks 1 are provided with through holes. The screw body of the butterfly screw passes through the through holes corresponding to each other in the three tightening blocks 1 and then screws together with the nut to complete the locking of the two through holes. When the two tightening blocks 1 need to be loosened, the butterfly screw and the nut are unscrewed, and the tightening blocks 1 can rotate around the overlapping ends.

[0037] The overlapping ends of the three tightening blocks 1 are provided with corresponding through holes for installing butterfly screws, and the butterfly screws are connected to nuts after being passed through the through holes of the overlapping ends of the three tightening blocks 1; so that the three tightening blocks 1 rotate together around one butterfly screw; only one butterfly screw needs to be unscrewed or screwed in to complete the loosening or tightening operation of the three tightening blocks 1, thereby improving the speed of operation. During installation, one of the clamping components 5 on the three tightening blocks 1 is always pressed against the part of the human brain 4 from the bridge of the nose to the eyebrows to ensure the basic positioning of the puncture needle 3.

[0038] The ends of the clamping components 5 installed on the multiple tightening blocks 1 are flush or uneven, and the clamping components 5 on one end of the three tightening blocks 1 are in three-point contact with the human brain to form a support plane, so that the guide mechanism 2 can stably guide the puncture needle 3 in the guide hole, and the guide hole is a guide through hole for the puncture needle 3 to pass through.

[0039] The clamping assembly 5 is a butterfly screw, and threaded through holes are provided on the clamping block 1 and the clamping assembly 5. The butterfly screw is screwed into the threaded through hole to complete the contact and clamping of the outer surface of the human brain 4.

[0040] The upper edge and / or side edge of the clamping block 1 are provided with a slide rail 11; the guide mechanism 2 includes a slider 21, a moving part A22, a moving part B23, a clamping part A24, a clamping part B25, a guide hole part A26, and a guide hole part B27. The slider 21 is provided with a slide groove that cooperates with the slide rail 11. The slider 21 can slide on the slide rail on the clamping block 1 in a controllable manner. One end of the moving part A22 is controllably rotatably and slidably installed on the slider 21; one end of the moving part B23 is controllably rotatably and slidably installed on the other end of the moving part A22; one end of the clamping part A24 is It is fixedly connected to the other end of the moving part B23, one end of the clamping part B25 is hinged to one end of the clamping part A24, and the other end of the clamping part B25 is detachably fixedly connected to the other end of the clamping part A24. The opposite surfaces of the clamping part B25 and the clamping part A24 are provided with grooves, and the grooves of the clamping part B25 and the clamping part A24 form a channel for the guide hole part A26 and the guide hole part B27 to slide after being engaged, and the opposite surfaces of the guide hole part A26 and the guide hole part B27 are provided with grooves, and the grooves of the guide hole part A26 and the guide hole part B27 form a guide hole for guiding the puncture needle 3.

[0041] When in use, when the puncture needle 3 needs to adjust the inclination angle and position, the position of the slide block 21 on the slide rail 11 on the different clamping blocks 1 is adjusted, and the moving parts A22 and B23 are adjusted at the same time, so that the puncture needle 3 can be guided to form a straight line with the point on the human brain 4 under the effect of the guide hole formed by the groove of the guide hole part A26 and the guide hole part B27, so that the puncture can be completed at one time and a channel can be established on the brain. Compared with the prior art disclosed in the patent in the background technology, the puncture needle 3 can quickly obtain the required inclination and position.

[0042] The slide rail 11 and the slide groove of the slider 21 are matched in an inverted T shape, which is a prior art and will not be described in detail.

[0043] One end of the clamping member A24 is provided with a threaded hole or a threaded through hole, and the other end of the movable member B23 is screwed into the threaded hole or the threaded through hole of the clamping member A24 with a butterfly screw to form a fixed connection, which is convenient for disassembly.

[0044] The slider 21 is provided with threaded through holes corresponding to the clamping block 1 and the body of the moving part A22, and the slider 21 is provided with a through hole for installing the moving part A22. After the butterfly screw is screwed into the threaded through hole, the slider 21 is pressed against the surface of the slide rail 11 of the clamping block 1 to control the sliding of the slider 21 on the slide rail 11; after the butterfly screw is screwed into the threaded through hole, the moving part A22 is pressed against the slider 21 to control the movement and rotation of the moving part A22 on the slider 21.

[0045] The moving part A22 is provided with a through hole for installing the moving part B23; the moving part A22 is provided with a threaded through hole corresponding to the moving part B23, and the butterfly screw is screwed into the threaded through hole to press the moving part B23 to control the sliding and rotation of the moving part B23 on the moving part A22.

[0046] One end of the clamping member A24 is provided with a threaded hole, and the other end of the movable member B23 is a threaded end which is screwed and fixedly connected with the threaded hole of the clamping member A24, so as to facilitate disassembly and assembly.

Claims

1. A positioning puncture guide instrument, characterized in that: include: A plurality of tightening blocks (1), wherein one end of the plurality of tightening blocks (1) overlaps with each other or overlaps in pairs; A locking assembly (12), the locking assembly (12) being mounted on the overlapping ends of the plurality of tightening blocks (1), and a single tightening block (1) being capable of rotating with the locking assembly (12) as an origin; A pressing assembly (5) is respectively installed at the other end of each of the plurality of tightening blocks (1), and the pressing assembly (5) is pressed against the surface of the human brain with the tightening block (1) as a fulcrum; At least one guide mechanism (2), the guide mechanism (2) being slidably mounted on one of the plurality of tightening blocks (1), the guide mechanism (2) itself being capable of rotating and sliding simultaneously along two mutually perpendicular axes; the guide mechanism (2) being provided with a guide hole for guiding the puncture needle (3); There are at least three tightening blocks (1), and the overlapping ends of the upper tightening block (1) and the middle tightening block (1), and the overlapping ends of the middle tightening block (1) and the lower tightening block (1) are respectively locked by a locking assembly (12); the upper tightening block (1) and the middle tightening block (1) can rotate with the locking assembly (12) as a rotation axis, and the middle tightening block (1) and the lower tightening block (1) can rotate with the locking assembly (12) as a rotation axis; The upper edge and / or side edge of the clamp block (1) are provided with a slide rail (11); the guide mechanism (2) comprises a slider (21), a moving member A (22), a moving member B (23), a clamping member A (24), a clamping member B (25), a guide hole member A (26), and a guide hole member B (27); the slider (21) is provided with a slide groove that is slidably matched with the slide rail (11); one end of the moving member A (22) is controllably rotatably and slidably mounted on the slider (21); one end of the moving member B (23) is controllably rotatably and slidably mounted on the moving member A (22); ) the other end; one end of the clamping member A (24) is fixedly connected to the other end of the moving member B (23), one end of the clamping member B (25) is hinged to one end of the clamping member A (24), the other end of the clamping member B (25) is detachably fixedly connected to the other end of the clamping member A (24), the opposing surfaces of the clamping member B (25) and the clamping member A (24) are provided with grooves forming a sliding channel for the guide hole member A (26) and the guide hole member B (27) to be engaged, and the opposing surfaces of the guide hole member A (26) and the guide hole member B (27) are provided with grooves forming a guide hole for guiding the puncture needle (3); When one or more tightening blocks (1) restrict the operation of the puncture needle (3), the locking assembly (12) and the pressing assembly (5) are loosened, and one or more tightening blocks (1) are rotated around the overlapping ends to other positions, and then the locking assembly (12) is locked, and the pressing assembly (5) presses the outer skin of the human brain (4), and the other tightening blocks (1) remain fixed on the outer skin of the human brain (4).

2. The positioning puncture guide instrument according to claim 1, characterized in that: The tightening block (1) can be an integral or split structure.

3. The positioning puncture guide instrument according to claim 1, characterized in that: The overlapping ends of the three tightening blocks (1) are each provided with a corresponding through hole for installing a butterfly screw, and the butterfly screw is connected to a nut after passing through the through holes at the overlapping ends of the three tightening blocks (1), so that the three tightening blocks (1) rotate together around one butterfly screw.

4. The positioning puncture guide instrument according to claim 1, characterized in that: The ends of the clamping components (5) installed on the three clamping blocks (1) are flush or uneven, and the clamping components (5) on one end of the three clamping blocks (1) are in contact with the human brain at three points to form a support plane.

5. The positioning puncture guide instrument according to claim 1, characterized in that: The locking assembly (12) comprises a butterfly screw and a nut. Through holes are provided on the three clamping blocks (1). The screw body of the butterfly screw passes through the corresponding through holes of the three clamping blocks (1) and then screws together with the nut to complete the locking of the two through holes.

6. The positioning puncture guide instrument according to claim 1, characterized in that: The plurality of clamping components (5) are butterfly screws, and threaded through holes are provided on the clamping block (1) and the clamping components (5).

7. The positioning puncture guide instrument according to claim 1, characterized in that: The slider (21) is provided with threaded through holes for screwing butterfly screws on the bodies of the corresponding clamping blocks (1) and the moving part A (22), and the slider (21) is provided with a through hole for installing the moving part A (22).

8. The positioning puncture guide instrument according to claim 1, characterized in that: The moving part A (22) is provided with a through hole for installing the moving part B (23); and the moving part A (22) is provided with a threaded through hole for screwing a butterfly screw on the body of the corresponding moving part B (23).

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