A lung nodule puncture positioner

Abstract

The utility model relates to positioning puncture needle technical field provides a kind of lung nodule puncture positioner, including puncture needle body and positioning needle body, the puncture needle body is arranged in the positioning needle body inside, the positioning needle body is used to be arranged positioning line inside, the puncture needle body one end is equipped with puncture handle, the positioning needle body one end is equipped with positioning handle, the positioning handle central position is equipped with the through slot for being used to penetrate puncture needle body, the puncture handle one end towards puncture needle body is equipped with with the assembly groove of the positioning handle snap fit adaptation, the positioning handle one end is equipped with snap block, the snap block both sides symmetrical rotation is equipped with limit plate, the limit plate is connected with the snap block assembly by first spring.Assembly and disassembly of the puncture needle body and the positioning needle body, gently press down the plug-in component, so that the plug-in component slowly moves down, until the two limit plates are extruded to close with the snap block both sides, at this time, the puncture needle body and the positioning needle body can be directly separated.

Description

Technical Field

[0001] This utility model relates to the field of positioning puncture needle technology, and in particular to a lung nodule puncture positioning device. Background Technology

[0002] A lung nodule puncture locator is a medical device used to accurately locate lung nodules and is widely used for puncture positioning in preoperative diagnosis or treatment.

[0003] For example, a lung nodule localization puncture needle, as described in "CN113648074B," relates to the technical field of medical puncture and localization instruments. It aims to solve the problems of low accuracy, difficulty in use, and movement of localization markers when judging lesion depth using color block distribution on a localization line. The key technical point is that at least one set of markers is arranged along the axial direction of the localization line. Each marker includes several groups of barbs distributed along the axial direction of the localization line. Each barb group contains a different number of barbs, with the barb openings facing away from the anchoring needle. Within the same group of markers, the number of barbs in each barb group along the direction away from the anchoring needle forms an arithmetic sequence. The first barb in each barb group closest to the anchoring needle is evenly distributed along the localization line. This invention allows for lesion depth to be determined simply by counting the number of barbs, is easy to learn, and ensures accuracy due to the anchoring effect of the barbs on the localization line.

[0004] However, in the prior art, as shown in the aforementioned patent, the connection ring between the handheld part on the end face of the push tube and the end face of the needle tube is installed by a threaded connection. Therefore, during installation or separation, the operator needs to hold the connection ring with one hand and rotate the handheld part with the other hand. During the rotation, the needle body may be offset axially or radially, especially when the operating space is limited or the target area is deep, which will affect the positioning accuracy. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art where the handheld part of the push tube end face and the needle tube end face are connected by threads, which can easily cause the needle body to shift and affect the positioning accuracy.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a lung nodule puncture locator, comprising a puncture needle body and a positioning needle body, wherein the puncture needle body is inserted inside the positioning needle body, and a positioning line is inserted inside the positioning needle body. One end of the puncture needle body is provided with a puncture handle, and one end of the positioning needle body is provided with a positioning handle. A through groove for penetrating the puncture needle body is provided at the center of the positioning handle. One end of the puncture handle facing the puncture needle body is provided with an assembly groove that fits into the positioning handle. One end of the positioning handle is provided with a locking block. Limiting plates are symmetrically rotated on both sides of the locking block. The limiting plates are assembled and connected to the locking block via a first spring. The assembly groove is provided with a locking groove that slidably engages with the locking block. Limiting grooves that engage with the limiting plates are symmetrically connected on both sides of the locking groove. An insert is slidably provided on the puncture handle above the assembly groove, and the lower end of the insert slides against the outer side of the limiting plate.

[0007] In a preferred embodiment, the locking block is provided with symmetrical side grooves on both sides, and the limiting plate is locked in the side grooves. The end of the limiting plate away from the positioning needle body is rotatably connected to the end face of the side groove. The side grooves facilitate the complete storage of the limiting plate in the side grooves, and facilitate the smooth separation of the locking block from the puncture handle.

[0008] In a preferred embodiment, a second spring is provided at the end of the locking block away from the positioning needle body. A telescopic shaft is provided inside the outer surface of the second spring. An inner groove is provided inside the puncture handle. The second spring and the telescopic shaft are located in the inner groove. With the second spring, during disassembly, when the limiting plate is retracted into the side groove using the plug, the positioning handle and the puncture handle lose their limiting connection. Under the pushing force of the second spring, the positioning handle and the puncture handle can be directly separated by a small distance. After the small distance is separated, the limiting plate is not in the position of the limiting groove, and it cannot be unfolded even with the pushing force of the first spring. At this time, the operator only needs to manually slide and pull it out, without the instability of the needle body caused by the operator pressing the plug and pulling the puncture handle out of the positioning handle at the same time.

[0009] In a preferred embodiment, the second spring is assembled and connected to the end face of the telescopic shaft. The compression distance of the telescopic shaft is between mm and mm. By setting the compression distance of the telescopic shaft to be small, the rebound distance of the second spring during the separation process of the positioning handle and the puncture handle is avoided from being too large, which could cause the puncture needle to lose control.

[0010] In a preferred embodiment, the locking block has a gear groove inside one end, and the side wall of the end of the limiting plate that is rotatably connected to the locking block has a first gear. Two meshing second gears are provided between the two first gears. The second gears mesh with the first gears, and the first gears and second gears are located in the gear groove. Through the meshing of the two first gears and the second gears, the two limiting plates can move synchronously in opposite directions, avoiding the situation where one limiting plate is completely retracted into the side groove while the other is not completely retracted, which would cause the plate to jam during disassembly.

[0011] In a preferred embodiment, the locking block has a needle groove at its center that communicates with the through groove, and a flared end of the locking block away from the positioning needle body that communicates with the needle groove. The flared end facilitates the insertion of the puncture needle into the positioning needle body, resulting in a larger insertion range.

[0012] In a preferred embodiment, the plug is U-shaped with its inner ends inclined. The two limiting plates have sloping surfaces on their outer sides facing the plug, allowing for sliding adaptation at both ends of the U-shaped structure. The upper part of the puncture handle has a slot for sliding the plug. The slot is connected to the center of the plug via a third spring. By setting both the plug and the limiting plates as sloping surfaces, the plug is in a slow sliding and squeezing state when it contacts the limiting plates, gradually squeezing the limiting plates into the side groove until they are retracted into the side groove. When the plug is released, the third spring pushes the plug upward to reset.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] When installing the puncture needle body and the positioning needle body, the puncture needle body is inserted into the slot of the positioning handle with one end facing it until it enters the positioning needle body. The locking block on the positioning handle engages with the locking slot. After it is fully engaged, the limiting plate unfolds into the limiting slot under the pushing force of the first spring. After it is fully unfolded, the limiting plate engages in the limiting slot, making it impossible for the puncture handle and the positioning handle to separate, thus realizing the installation of the puncture needle body and the positioning needle body. Conversely, when disassembling, the insert is gently pressed down, causing the insert to slowly move down until the two limiting plates are squeezed to close with the sides of the locking block. At this time, the puncture needle body and the positioning needle body can be directly separated. The operation is simple and convenient, and the positioning needle body is difficult to displace during the installation and disassembly process. Attached Figure Description

[0015] Figure 1 A schematic diagram of the insertion state of the puncture needle body and the positioning needle body of a lung nodule puncture locator provided by this utility model;

[0016] Figure 2A schematic diagram of the positioning handle of a lung nodule puncture locator provided by this utility model;

[0017] Figure 3 A schematic diagram of the internal structure of the positioning handle of a lung nodule puncture locator provided by this utility model;

[0018] Figure 4 A schematic diagram of the puncture handle of a lung nodule puncture locator provided by this utility model;

[0019] Figure 5 A schematic diagram of the internal structure of the puncture handle of a lung nodule puncture locator provided by this utility model.

[0020] Legend:

[0021] 1. Puncture needle body; 2. Positioning needle body; 3. Puncture handle; 4. Positioning handle; 5. Through groove; 6. Assembly groove; 7. Engaging block; 8. Limiting plate; 9. First spring; 10. Engaging groove; 11. Limiting groove; 12. Insert; 13. Side groove; 14. Second spring; 15. Telescopic shaft; 16. Inner groove; 17. Gear groove; 18. First gear; 19. Second gear; 20. Needle groove; 21. Flaring; 22. Slot; 23. Third spring. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5 This utility model provides a technical solution: a lung nodule puncture locator, including a puncture needle body 1 and a positioning needle body 2. The puncture needle body 1 is inserted inside the positioning needle body 2, and a positioning line is inserted inside the positioning needle body 2. One end of the puncture needle body 1 is provided with a puncture handle 3, and one end of the positioning needle body 2 is provided with a positioning handle 4. A through groove 5 for penetrating the puncture needle body 1 is provided at the center of the positioning handle 4. The end of the puncture handle 3 facing the puncture needle body 1 is provided with an assembly groove 6 that fits with the positioning handle 4. One end of the positioning handle 4 is provided with a locking block 7. Limiting plates 8 are symmetrically rotated on both sides of the locking block 7. The limiting plates 8 are assembled and connected to the locking block 7 through a first spring 9. The assembly groove 6 is provided with a locking groove 10 that is slidably engaged with the locking block 7. Limiting grooves 11 that are symmetrically connected on both sides of the locking groove 10 and engaged with the limiting plates 8 are provided. An insert 12 is slidably provided on the puncture handle 3 above the assembly groove 6. The lower end of the insert 12 slides and pushes against the outer side of the limiting plate 8.

[0024] like Figure 1-5 As shown, the locking block 7 has symmetrical side grooves 13 on both sides, and the limiting plate 8 is locked in the side groove 13. The end of the limiting plate 8 away from the positioning needle body 2 is rotatably connected to the end face of the side groove 13. Through the side groove 13, it is easy to completely store the limiting plate 8 into the side groove 13, so that the locking block 7 can be easily separated from the puncture handle 3.

[0025] like Figure 1-5 As shown, the locking block 7 has a second spring 14 at the end away from the positioning needle body 2. The second spring 14 has a telescopic shaft 15 inside and outside. The puncture handle 3 has an inner groove 16. The second spring 14 and the telescopic shaft 15 are located in the inner groove 16. With the second spring 14, when disassembling, after the limiting plate 8 is retracted into the side groove 13 by the plug 12, the positioning handle 4 and the puncture handle 3 lose the limiting connection. Under the pushing force of the second spring 14, the positioning handle 4 and the puncture handle 3 can be directly separated by a small distance. After the small distance is separated, the limiting plate 8 is not in the position of the limiting groove 11. Even with the pushing force of the first spring 9, it cannot be unfolded. At this time, the operator only needs to manually slide and pull it out. There is no need for the operator to press the plug 12 and pull the puncture handle 3 out of the positioning handle 4 at the same time, which would cause the needle body to be unstable.

[0026] like Figure 1-5 As shown, the second spring 14 is assembled and connected to the end face of the telescopic shaft 15. The compression distance of the telescopic shaft 15 is between 2mm and 4mm. By setting the compression distance of the telescopic shaft 15 to be small, the situation where the puncture needle body 1 loses control is avoided because the second spring 14 rebounds too far during the separation process of the positioning handle 4 and the puncture handle 3.

[0027] like Figure 1-5 As shown, the locking block 7 has a gear groove 17 inside one end, and the side wall of the limiting plate 8 that is rotatably connected to the locking block 7 has a first gear 18. There are two meshing second gears 19 between the two first gears 18. The second gears 19 mesh with the first gears 18. The first gears 18 and the second gears 19 are located in the gear groove 17. Through the meshing of the two first gears 18 and the second gears 19, the two limiting plates 8 can move synchronously in opposite directions, avoiding the situation where one limiting plate 8 is completely retracted into the side groove 13 while the other is not completely retracted, which would cause the plate to jam during disassembly.

[0028] like Figure 1-5 As shown, the locking block 7 has a needle groove 20 at its center that is connected to the through groove 5. The locking block 7 has a flared opening 21 at the end away from the positioning needle body 2 that is connected to the needle groove 20. Through the flared opening 21, the puncture needle body 1 can easily pass through the flared opening 21 into the positioning needle body 2, thus making the insertion range larger.

[0029] like Figure 1-5As shown, the plug 12 is U-shaped with the inner sides of both ends of the U-shaped structure inclined. The two limiting plates 8 have inclined surfaces on the outer side of the side facing the plug 12, which are slidably adapted to the two ends of the U-shaped structure. The upper part of the puncture handle 3 has a slot 22 for sliding the plug 12. The slot 22 is connected to the center of the plug 12 by a third spring 23. By setting both the plug 12 and the limiting plates 8 as inclined surfaces, the plug 12 is in a slow sliding and squeezing state when it contacts the limiting plates 8, and the limiting plates 8 are gradually squeezed into the side groove 13 until the limiting plates 8 are squeezed and retracted into the side groove 13. When the plug 12 is released, the third spring 23 pushes the plug 12 upward and resets it.

[0030] Working principle: When installing the puncture needle body 1 and the positioning needle body 2, insert one end of the puncture needle body 1 into the through groove 5 of the positioning handle 4 until it enters the positioning needle body 2. The locking block 7 on the positioning handle 4 engages with the locking groove 10. After being fully engaged, the limiting plate 8 unfolds into the limiting groove 11 under the pushing force of the first spring 9. After being fully unfolded, the limiting plate 8 engages in the limiting groove 11, making it impossible for the puncture handle 3 and the positioning handle 4 to separate, thus realizing the installation of the puncture needle body 1 and the positioning needle body 2. Conversely, when disassembling, gently press the plug 12 to make the plug 12 slowly move down until the two limiting plates 8 are squeezed to close with the locking block 7 on both sides. At this time, the puncture needle body 1 and the positioning needle body 2 can be directly separated. The operation is simple and convenient, and the positioning needle body 2 is difficult to move during the installation and disassembly process.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A lung nodule puncture locator, comprising a puncture needle body (1) and a positioning needle body (2), wherein the puncture needle body (1) is inserted inside the positioning needle body (2), and a positioning line is inserted inside the positioning needle body (2), characterized in that, The puncture needle body (1) is provided with a puncture handle (3) at one end, and the positioning needle body (2) is provided with a positioning handle (4) at one end. The positioning handle (4) is provided with a through groove (5) for penetrating the puncture needle body (1) at its center. The puncture handle (3) is provided with an assembly groove (6) that fits into the positioning handle (4) at the end facing the puncture needle body (1). The positioning handle (4) is provided with a locking block (7) at one end. The locking block (7) is provided with limiting plates (8) that rotate symmetrically on both sides. The limiting plate (8) is assembled and connected to the locking block (7) by the first spring (9). The assembly groove (6) is provided with a locking groove (10) that is slidably engaged with the locking block (7). The locking groove (10) is symmetrically connected on both sides with limiting grooves (11) that are engaged with the limiting plate (8). The piercing handle (3) above the assembly groove (6) is slidably provided with a plug (12). The lower end of the plug (12) slides and pushes against the outer side of the limiting plate (8).

2. The lung nodule puncture locator according to claim 1, characterized in that: The locking block (7) has symmetrical side grooves (13) on both sides. The limiting plate (8) is locked in the side groove (13). The end of the limiting plate (8) away from the positioning needle body (2) is rotatably connected to the end face of the side groove (13).

3. The lung nodule puncture locator according to claim 2, characterized in that: The locking block (7) is provided with a second spring (14) at the end away from the positioning needle body (2). The second spring (14) is provided with a telescopic shaft (15) inside and outside. The puncture handle (3) is provided with an inner groove (16). The second spring (14) and the telescopic shaft (15) are located in the inner groove (16).

4. The lung nodule puncture locator according to claim 3, characterized in that: The second spring (14) is assembled and connected to the end face of the telescopic shaft (15), and the compression distance of the telescopic shaft (15) is between 2mm and 4mm.

5. A lung nodule puncture locator according to claim 1, characterized in that: The locking block (7) has a gear groove (17) inside one end. The side wall of the limiting plate (8) that is rotatably connected to the locking block (7) is provided with a first gear (18). There are two meshing second gears (19) between the two first gears (18). The second gears (19) mesh with the first gears (18). The first gears (18) and the second gears (19) are located in the gear groove (17).

6. A lung nodule puncture locator according to claim 5, characterized in that: The locking block (7) has a needle groove (20) at its center that communicates with the through groove (5), and the locking block (7) has a flared opening (21) at the end away from the positioning needle body (2) that communicates with the needle groove (20).

7. The lung nodule puncture locator according to claim 1, characterized in that: The plug (12) is U-shaped, with the inner sides of both ends of the U-shaped structure inclined. The two limiting plates (8) on the outer side facing the plug (12) have inclined surfaces that slide and adapt to the ends of the U-shaped structure. The puncture handle (3) has a slot (22) for sliding the plug (12) inside and above. The slot (22) is connected to the center of the plug (12) by a third spring (23).

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