Ultrasonic intervention puncture guiding device and needle guiding assembly thereof

Abstract

The utility model relates to an ultrasonic intervention puncture guiding device and a needle guiding assembly thereof. The needle guiding assembly comprises a puncture needle base, a gland and a guiding block, a puncture needle groove penetrating from the needle inlet end to the needle outlet end is formed in the puncture needle base, and the gland is installed on the puncture needle base and above the puncture needle groove in the mode that the gland can transversely move relative to the puncture needle base in the two side directions of the puncture needle groove. The guide block is installed on the gland in the mode that the guide block can longitudinally move relative to the gland below the gland, the bottom of the guide block is provided with a matching face which is matched with the puncture needle groove to jointly form a puncture channel, and the gland drives the guide block to transversely move so as to open or close the puncture needle groove. And the guide block longitudinally moves relative to the gland to change the size of the puncture channel. According to the needle guide assembly, convenient and stable needle frame separation can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to medical devices in the field of image intervention, and more particularly to an ultrasound intervention puncture guiding device and a needle guiding assembly thereof. BACKGROUND

[0002] At present, the application of ultrasound probe configured puncture frame in puncture surgery is very wide. In different surgeries, different types of puncture needles are used. Before puncture, the puncture needle needs to be conveniently aligned with the needle insertion port. During puncture, the puncture frame needs to be able to hold different types of puncture needles and achieve stable and reliable needle insertion guidance. If biopsy, drainage, catheterization, drug injection and other surgeries are performed, after the puncture needle reaches the target, the puncture needle needs to be retained in the lesion site of the human body for subsequent surgery, and at this time, the puncture frame and the ultrasound probe need to be removed. At this time, the puncture needle needs to be conveniently and quickly separated from the puncture frame.

[0003] The applicant's earlier Chinese utility model patent CN208435746U discloses a puncture needle guiding device capable of achieving quick separation of the needle frame. The device rotates one side needle seat and a second side V-shaped puncture needle groove to form a reliable puncture channel through an elastic loading driving mode. The puncture channel is opened by pressing one side needle seat to overcome the elastic loading force, thereby quickly achieving separation of the needle frame. However, in the opening mode of the puncture channel through pressing to overcome the elastic force, the opening of the puncture channel is limited, or when the pressing force is too large, the puncture needle that has entered the human body is easily disturbed during the separation process, which may cause the needle to shake. Moreover, this mode requires certain practical experience of the pressing force to accurately and stably open the puncture channel and achieve separation of the needle frame, and the operator needs to receive a certain amount of simulation training before the operation. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an ultrasound intervention puncture guiding device and a needle guiding assembly thereof capable of achieving convenient and stable separation of the needle frame in view of the above defects of the prior art.

[0005] To solve the technical problem, the present application provides, in a first aspect, a needle guiding assembly, which comprises a puncture needle seat, wherein a puncture needle groove is formed in the puncture needle seat from a needle insertion end to a needle exit end. The needle guiding assembly further comprises a gland, which is installed above the puncture needle groove of the puncture needle seat in a manner that the gland can move horizontally relative to the puncture needle seat on both sides of the puncture needle groove; and a guiding block, which is installed below the gland in a manner that the guiding block can move longitudinally relative to the gland, wherein the bottom of the guiding block is provided with a matching surface that cooperates with the puncture needle groove to form a puncture channel. The gland moves horizontally with the guiding block to open or close the puncture needle groove, and the guiding block moves longitudinally relative to the gland to change the size of the puncture channel.

[0006] In one embodiment of the needle guiding assembly according to the first aspect of the present application, the first side wall is provided on one side of the puncture needle slot of the puncture needle seat, the pressure cover is provided with a first driving screw extending transversely and is threadedly connected with the first side wall, and rotating the first driving screw drives the pressure cover to move transversely relative to the puncture needle seat.

[0007] In one embodiment of the needle guiding assembly according to the first aspect of the present application, the pressure cover comprises a pressure cover body and a connecting portion provided on the side of the pressure cover body close to the first side wall, and the first driving screw is threadedly connected through the first side wall and is fixedly connected with the connecting portion.

[0008] In one embodiment of the needle guiding assembly according to the first aspect of the present application, the first driving screw comprises a guide section close to the head end, a threaded section close to the tail end, and an operation end provided at the tail end of the threaded section, the first side wall is provided with a first threaded hole and a guide hole spaced transversely, the guide section of the first driving screw is fixedly connected with the connecting portion of the pressure cover through the guide hole, and the threaded section of the first driving screw is threadedly connected with the first threaded hole.

[0009] In one embodiment of the needle guiding assembly according to the first aspect of the present application, the other side of the pressure cover body away from the first side wall is provided with at least one positioning boss, the other side of the puncture needle slot of the puncture needle seat is provided with a second side wall, and the second side wall is provided with at least one positioning groove for inserting the at least one positioning boss.

[0010] In one embodiment of the needle guiding assembly according to the first aspect of the present application, the guiding block is provided with a second driving screw extending longitudinally and is threadedly connected with the pressure cover, and rotating the second driving screw drives the guiding block to move longitudinally relative to the pressure cover.

[0011] In one embodiment of the needle guiding assembly according to the first aspect of the present application, the guiding block comprises a block body below the pressure cover, the bottom of the block body forms the fitting surface, and the second driving screw is threadedly connected through the pressure cover and is fixedly connected with the block body.

[0012] In one embodiment of the needle guiding assembly according to the first aspect of the present application, the second driving screw comprises a first threaded section, a second threaded section threadedly connected with the outside of the first threaded section, and an operation end provided at the tail end of the second threaded section, the first threaded section and the second threaded section form a positive and negative differential screw structure, the second threaded section is threadedly connected with a second threaded hole provided on the pressure cover, and the first threaded section passes through the second threaded hole and is fixedly connected with the block body of the guiding block.

[0013] In one embodiment of the needle guiding assembly according to the first aspect of the present application, the puncture needle slot is a V-shaped slot, and the matching surface is a flat surface or an arc surface.

[0014] To solve the technical problems, the present application provides an ultrasonic intervention puncture guiding device in a second aspect, which comprises a fixed assembly fixedly installed with an ultrasonic probe and a needle guiding assembly fixedly installed on the fixed assembly at an angle or an adjustable angle, wherein the needle guiding assembly is the needle guiding assembly described above.

[0015] The ultrasonic intervention puncture guiding device and the needle guiding assembly thereof according to the present application have the following beneficial effects: the needle guiding assembly of the ultrasonic intervention puncture guiding device according to the embodiments of the present application is composed of a puncture needle seat, a gland capable of moving transversely relative to the puncture needle seat, and a guiding block capable of moving longitudinally relative to the gland. The gland can be conveniently and stably closed or opened to form a puncture channel. When the puncture channel is opened, a completely open separation space is formed, which facilitates the separation of the needle holder and the cleaning of the puncture channel after the operation. The longitudinal movement of the guiding block can make the matching surface cooperate with the puncture needle slot to form a puncture channel of different sizes, so as to adapt to puncture needles of different sizes. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in combination with the drawings and embodiments. In the drawings:

[0017] Figure 1 FIG. 1 is a structural schematic view of an ultrasonic intervention puncture guiding device according to an embodiment of the present application installed on an ultrasonic probe;

[0018] Figure 2 FIG. 2 is a structural schematic view of a needle guiding assembly in the ultrasonic intervention puncture guiding device shown in FIG. 1; Figure 1

[0019] Figure 3 FIG. 3 is a structural schematic view of the needle guiding assembly shown in FIG. 2 in a puncture channel closed state; Figure 2

[0020] Figure 4 FIG. 4 is a structural schematic view of the needle guiding assembly shown in FIG. 2 in a puncture channel open state; Figure 2

[0021] Figure 5 FIG. 5 is a partial structural sectional view of a first driving screw in an embodiment of the present application;

[0022] Figure 6 FIG. 6 is a partial structural sectional view of a second driving screw in an embodiment of the present application.

[0023] ​​​Explanation of reference numerals: 1 - ultrasonic intervention puncture guiding device; 2 - ultrasonic probe; 3 - puncture needle; 10 - fixing assembly; 20 - needle guiding assembly; 21 - puncture needle seat; 211 - puncture needle slot; 212 - first side wall; 2121 - guide hole; 2122 - first threaded hole; 213 - second side wall; 214 - positioning groove; 22 - gland; 221 - gland body; 2211 - second threaded hole; 222 - connecting part; 223 - first driving screw; 2231 - guide section; 2232 - threaded section; 2233 - operation end; 224 - positioning boss; 23 - guiding block; 231 - block body; 232 - second driving screw; 2321 - first threaded section; 2322 - second threaded section; 2323 - operation end; 233 - matching surface; 24 - puncture channel. DETAILED DESCRIPTION

[0024] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application. Moreover, the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0025] Figure 1 A structure schematic diagram of an ultrasonic intervention puncture guiding device 1 according to one embodiment of the present application is shown, which is installed on an ultrasonic probe 2 to guide a puncture needle 3. Referring to Figure 1 As shown, the ultrasonic intervention puncture guiding device 1 mainly comprises a fixing assembly 10 and a needle guiding assembly 20. The fixing assembly 10 is fixedly installed with the ultrasonic probe 2, so that the whole ultrasonic intervention puncture guiding device 1 is fixed on the ultrasonic probe 2. The needle guiding assembly 20 is fixedly or adjustably arranged on the fixing assembly 10, and the puncture needle 3 is guided by the needle guiding assembly 20 to visually enter a target position for surgery under image monitoring.

[0026] Referring to Figure 1 In combination with Figure 2As shown, the needle guiding assembly 20 is further composed of a puncture needle seat 21, a gland 22 and a guiding block 23. The puncture needle seat 21 is fixedly or adjustably arranged on the fixing assembly 10, and a puncture needle slot 211 is formed in the puncture needle seat 21 from a needle entry end 2111 to a needle exit end 2112. The gland 22 is installed above the puncture needle slot 211 on the puncture needle seat 21 in a manner that it can move laterally relative to the puncture needle seat 21 in the direction of both sides of the puncture needle slot 211. The guiding block 23 is installed below the gland 22 in a manner that it can move longitudinally relative to the gland 22, and the bottom of the guiding block 23 is provided with a matching surface 233 which cooperates with the puncture needle slot 211 to jointly form a puncture channel 24 for guiding the puncture needle 3. In this way, the lateral movement of the gland 22 can close or open the puncture channel 24, and can completely open the puncture channel 24 to form a completely open separation space, facilitating the quick separation of the needle holder and the postoperative cleaning of the puncture channel 24; the longitudinal movement of the guiding block 23 can make the matching surface 233 cooperate with the puncture needle slot 211 to form puncture channels 24 of different sizes to adapt to different sizes of puncture needles.

[0027] Specifically referring to Figure 2 in combination with Figure 3 and Figure 4 As shown, one side of the puncture needle seat 21 on the opposite sides of the puncture needle slot 211 is provided with a first side wall 212, and the other side is provided with a second side wall 213. The gland 22 includes a gland main body 221, a connecting portion 222 and a first driving screw 223. The gland main body 221 is located above the puncture needle slot 211, the connecting portion 222 is arranged on the side of the gland main body 221 close to the first side wall 212, and the first driving screw 223 extends laterally and is fixedly connected with the connecting portion 222 after being screwed through the first side wall 212. Rotating the first driving screw 223 can drive the gland 22 to move laterally relative to the puncture needle seat 21. Further referring to Figure 2 As shown, the other side of the gland main body 221 away from the first side wall 212 is provided with two positioning bosses 224, and two positioning grooves 214 are correspondingly formed in the second side wall 213 of the puncture needle seat 21. When the positioning bosses 224 are inserted into the corresponding positioning grooves 214 in the second side wall 213 while the gland 22 is moved laterally in the direction of gradually approaching the second side wall 213 by rotating the first driving screw 223, the puncture channel 24 is closed (see Figure 3 As shown). When the gland 22 is moved laterally in the direction of gradually moving away from the second side wall 213 by reversely rotating the first driving screw 223, the puncture channel 24 is gradually opened. When the gland 22 with the guiding block 23 is completely withdrawn to the side of the puncture needle slot 211 close to the first side wall 212, the puncture channel 24 is completely opened (see Figure 4 As shown).

[0028] According to one specific embodiment of the present application, referring to Figure 5As shown, the first driving screw 223 includes a guide segment 2231 near the head end, a threaded segment 2232 near the tail end, and an operating end 2233 at the tail end of the threaded segment 2232. The first side wall 212 of the puncture needle seat 21 is provided with transversely spaced first threaded holes 2122 and guide holes 2121, the guide segment 2231 of the first driving screw 223 is fixedly connected with the connecting portion 222 of the gland 20 through the guide holes 2121, and the threaded segment 2232 of the first driving screw 223 is threadedly connected with the first threaded holes 2122. In this way, rotating the operating end 2233 of the first driving screw 223 can not only drive the gland 20 to move transversely relative to the puncture needle seat 21, but also provide a guide for the transverse movement of the gland 20 through the cooperation of the guide segment 2231 and the guide holes 2121, thereby ensuring the stable movement of the gland 20.

[0029] Referring again to Figure 2 In combination Figure 3 And Figure 4 As shown, the guide block 23 includes a block body 231 and a second driving screw 232. The block body 231 is located below the gland main body 221, and the bottom of the block body 231 is provided with a matching surface 233. The second driving screw 232 extends longitudinally, is threadedly connected with the block body 231 after passing through the gland main body 221, and is fixedly connected with the block body 231. Rotating the second driving screw 232 can drive the block body 231 to move longitudinally relative to the gland main body 221, thereby changing the height of the matching surface 233 relative to the puncture needle groove 211, making the matching surface 233 and the puncture needle groove 211 cooperate to form a puncture passage 24 of different sizes, so as to adapt to puncture needles of different sizes. According to a specific embodiment of the present application, the puncture needle groove 211 can be a V-shaped groove, and the matching surface 233 can be a flat surface or an arc surface. Moreover, the matching surface 233 can extend into the puncture needle groove 211 (see Figure 3 As shown) or stop outside the puncture needle groove 211 (see Figure 4 As shown) under the action of the rotation of the second driving screw, and the size of the puncture passage 24 can be adjusted according to the type of needle.

[0030] According to a specific embodiment of the present application, referring to Figure 6As shown, the second drive screw 232 includes a first threaded segment 2321, a second threaded segment 2322 threadedly sleeved outside the first threaded segment 2321, and an operating end 2323 arranged at the tail end of the second threaded segment 2322. The second threaded segment 2322 is threadedly connected with the second threaded hole 2211 arranged on the cap body 221, and the first threaded segment 2321 is fixedly connected with the block body 231 of the guide block 23 by penetrating the second threaded hole 2211 in the second threaded segment 2322. The second threaded segment 2322 is threadedly sleeved with the first threaded segment 2321, one of which is right-handed and the other is left-handed, forming a differential screw structure. By rotating the second drive screw 232 one circle through the operating end 2323, the distance is adjusted to the sum of two pitches, so as to realize rapid adjustment. In specific operation, the height of the guide block 23 can be adjusted according to the set gear line to obtain the desired puncture channel size, or the puncture needle 3 can be placed in the puncture needle slot 211, and then the mating surface 233 of the guide block 23 is adjusted to abut against the puncture needle 3 to adjust to the position, and then a slight rotation is performed to leave a movement gap of the puncture needle 3.

[0031] Before the ultrasonic intervention puncture guiding device 1 according to the above-mentioned embodiments of the present application is used in cooperation with the puncture needle 3, the first drive screw 223 is rotated to make the positioning boss 224 inserted into the positioning groove 214 on the puncture needle seat 21 to close the puncture channel 24, the second drive screw 232 is rotated to form a puncture channel 24 matched with the size of the puncture needle according to the demand of the puncture needle type, and then the puncture needle 3 can be guided to visually enter the target position under the monitoring of the image obtained by the ultrasonic probe 2 to perform surgery. When the needle rack needs to be separated, the first drive screw 223 is only needed to be reversely rotated to open the puncture channel 24 to form a completely open separation space, so that the ultrasonic probe 2 and the puncture rack 1 are conveniently and quickly removed to realize the separation and release of the puncture needle 3, and the puncture channel 24 is conveniently cleaned after the operation.

[0032] According to different embodiments of the present application, the driving mode of the laterally movable cap 22 and the longitudinally movable guide block 23 is not limited to the screw thread driving mode in the illustrated embodiment, but can be replaced by a cam driving or other various suitable driving modes.

[0033] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A needle guide assembly comprising a puncture needle seat having a puncture needle slot formed therein from a needle entry end to a needle exit end, characterized in that, The needle guide assembly further comprises: a cap, which is installed above the puncture needle slot on the puncture needle base in a manner that it can move laterally relative to the puncture needle base in the direction of both sides of the puncture needle slot; a guide block, which is installed on the cap in a manner that it can move longitudinally relative to the cap below the cap, and the bottom of the guide block is provided with a matching surface that cooperates with the puncture needle slot to jointly form a puncture channel; the cap moves laterally with the guide block to open or close the puncture needle slot, and the guide block moves longitudinally relative to the cap to change the size of the puncture channel.

2. The needle guide assembly of claim 1, wherein, The puncture needle base is provided with a first side wall on one side of the puncture needle slot, and the cap is provided with a first driving screw that is threadedly connected with the first side wall and extends laterally, and rotating the first driving screw drives the cap to move laterally relative to the puncture needle base.

3. The needle guide assembly of claim 2, wherein, The cap comprises a cap body and a connecting portion provided on the side of the cap body close to the first side wall, and the first driving screw is threadedly connected with the connecting portion after penetrating through the first side wall.

4. The needle guide assembly of claim 3, wherein, The first driving screw comprises a guide section close to the head end, a threaded section close to the tail end, and an operation end provided at the tail end of the threaded section, the first side wall is provided with a first threaded hole and a guide hole that are spaced laterally, the guide section of the first driving screw is fixedly connected with the connecting portion of the cap after penetrating through the guide hole, and the threaded section of the first driving screw is threadedly connected with the first threaded hole.

5. The needle guide assembly of claim 3, wherein, The other side of the cap body away from the first side wall is provided with at least one positioning boss, the puncture needle base is provided with a second side wall on the other side of the puncture needle slot, and the second side wall is provided with at least one positioning groove for inserting the at least one positioning boss.

6. The needle guide assembly of claim 1, wherein, The guide block is provided with a second driving screw that threadedly connects with the cap and extends longitudinally, and rotating the second driving screw drives the guide block to move longitudinally relative to the cap.

7. The needle guide assembly of claim 6, wherein, The guide block comprises a block body below the cap, the bottom of the block body forms the matching surface, and the second driving screw is fixedly connected with the block body after penetrating through the cap.

8. The needle guide assembly of claim 7, wherein, The second driving screw comprises a first threaded section and a second threaded section that is threadedly connected with the outside of the first threaded section, and an operation end provided at the tail end of the second threaded section, the first threaded section and the second threaded section form a positive and negative differential screw structure, the second threaded section is threadedly connected with a second threaded hole provided on the cap, and the first threaded section is fixedly connected with the block body of the guide block after penetrating through the second threaded hole.

9. The needle guide assembly of claim 1, wherein, The puncture needle slot is a V-shaped slot, and the matching surface is a plane or an arc surface.

10. An ultrasound intervention puncture guiding device, comprising a fixed assembly fixedly installed with an ultrasound probe and a needle guiding assembly fixedly installed on the fixed assembly at an angle or adjustably installed on the fixed assembly at an angle, characterized in that, The needle guide assembly is the needle guide assembly according to any one of claims 1-9.

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