CN114469281A - Lung needle fixation device - Google Patents

Abstract

The invention relates to the technical field of medical devices, and discloses a lung needle fixing device, comprising a mounting plate, an inserting plate is inserted in the mounting plate, a push handle is arranged at the top of the inserting plate, and a bottom end of the inserting plate is provided with a push handle. A connecting block is fixedly connected, and the bottom of the connecting block is provided with a puncture needle; when the insert plate and the connecting block just start to move downward, the connecting block will gradually push the push block to move inward through the hinge rod, and the first spring will gradually be moved inward. Compression, thus, through the resistance of the first spring, the movement of the puncture needle can be slowed before the puncture, giving the doctor sufficient confirmation time; when the connecting block is pushed to the bottom of the push block, the first spring is instantly compressed It is transformed into a state of restoration of deformation, so that the push block can be quickly pushed out, and the push block is quickly pushed out, so that the connecting block and the puncture needle can be quickly moved downward, and the skin of the patient’s body surface can be instantly pierced with a large force, thereby effectively Avoid puncture position deviation due to skin rebound.

Description

Lung needle fixation device

technical field

The invention relates to the technical field of medical devices, in particular to a lung needle fixing device.

Background technique

Lung puncture is the puncture of the needle through the chest wall and the visceral pleura of the pleural cavity into the lung, mainly for biopsy of the lung parenchyma, further examination of the lesions by aspiration, and a clear diagnosis. Some pus in the cavities with poor drainage can be sucked, and if necessary, drugs can be injected to achieve the purpose of treatment;

When performing lung puncture, the optimal puncture point, needle insertion depth and angle of the lesion are first determined by CT scan, then the robotic arm is controlled to move to make the puncture needle reach the designated position, and finally the puncture needle is used for puncture work; however, in the actual puncture We found that when the needle tip of the puncture needle just pierced the skin, the elasticity of the skin tissue will cause a large rebound of the skin at the moment of piercing. This rebound will not only affect the puncture accuracy of the puncture needle, but also At the same time, it will also bring certain security risks;

Based on this, we propose a lung needle fixation device.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides a lung needle fixing device, which has the advantage of effectively avoiding skin rebound.

(2) Technical solutions

In order to achieve the above-mentioned purpose of effectively avoiding skin rebound, the present invention provides the following technical solutions: a lung needle fixing device, including a mounting plate, a plug-in board is inserted in the installation board, and a push handle is provided at the top of the plug-in board. , the bottom end of the insert plate is fixedly connected with a connecting block, and the bottom of the connecting block is provided with a puncture needle;

The left and right sides of the connecting block are provided with a first hinge seat, the inner wall of the first hinge seat is movably provided with a hinge rod, and the other end of the hinge rod is movably connected with a second hinge seat, the second hinge The seat is fixedly installed on the outer wall of the push block, the push block is movably arranged in the movable groove, and the movable groove is opened in the side loading block, and the side loading block is fixed on the bottom of the mounting plate through the vertical rod.

As a preferred technical solution of the present invention, an elastic element is further arranged between the push block and the inner side wall of the movable slot.

As a preferred technical solution of the present invention, the elastic element is a first spring, one end of the first spring is fixedly installed on the outer wall of the push block, and the other end of the first spring is fixedly installed on the inner side of the movable groove on the wall.

As a preferred technical solution of the present invention, the hinge rod includes a head rod, a tail barrel, a movable plug, a pull rod and a second spring, the inner wall of the first hinge seat is movably provided with a head rod, and the second hinge seat A tail cylinder is movably arranged on the inner wall of the tail cylinder, a movable plug is movably arranged on the inner wall of the tail cylinder, a pull rod is fixedly installed on the outer wall of the movable plug, and the end of the pull rod extends to the outside of the tail cylinder and is fixedly connected with the head rod;

A second spring is also sleeved on the pull rod.

As a preferred technical solution of the present invention, a top cabinet is fixedly installed on the top of the installation board, and a first push rod and a second push rod are respectively interspersed on the left and right sides of the top cabinet, and are arranged between the plug board and the first push rod. A drive mechanism between a push rod and a second push rod is used to synchronously drive the first push rod and the second push rod to extend outward when the connecting block and the puncture needle are pushed down by the insert plate.

As a preferred technical solution of the present invention, the driving mechanism includes a screw rod, a first nut, a second nut, a driving gear and teeth, a screw rod is rotatably arranged in the top cabinet, and the left side and the outer wall of the outer wall of the screw rod are rotatable. The right side is respectively provided with a first thread and a second thread with opposite directions of rotation. Both are slidably arranged on the side wall of the top cabinet, and the first push rod and the second push rod are respectively fixed and installed on the opposite side of the first nut and the second nut;

The middle part of the screw rod is fixedly provided with a driving gear, the outer wall of the insert plate is provided with teeth, and the driving gear is engaged with the teeth.

As a preferred technical solution of the present invention, the bottoms of the two side loading blocks are fixedly installed with base cabinets, and the bottoms of the two base cabinets are movably provided with support plates;

The linkage mechanism arranged between the first push rod, the second push rod and the two support plates is used to drive the two support plates synchronously when both the first push rod and the second push rod extend outwards. The plates are moved away from each other at the surface of the skin to tighten the skin.

As a preferred technical solution of the present invention, the linkage mechanism includes a linkage rod, a connecting rod and a moving plate, and a linkage rod is fixedly installed at the bottoms of the ends of the first push rod and the second push rod, and the bottom of the linkage rod A connecting rod is fixedly installed on the outer wall of the connecting rod, and the end of the connecting rod is fixedly connected with a moving plate.

As a preferred technical solution of the present invention, the side loading block is provided with a rod groove corresponding to the linkage rod, and the linkage rod is movably arranged inside the rod groove.

As a preferred technical solution of the present invention, a limit rod is also inserted inside the moving plate, and the left and right ends of the limit rod are respectively fixed and installed on the left and right inner walls of the base cabinet.

(3) Beneficial effects

Compared with the prior art, the present invention provides a lung needle fixing device, which has the following beneficial effects:

1. When using the lung needle fixing device, the whole device is moved to the puncture position by the mechanical arm, the puncture needle is aligned with the puncture point, and then the insert plate is pushed down by the push handle, and the insert plate moves downward through the connecting block to drive the puncture. The needle moves down so that the puncture can be performed;

When the insert plate and the connecting block just start to move downward, the connecting block will gradually push the push block to move inward through the hinge rod, and the first spring is gradually compressed. The needle moves slowly, giving the physician sufficient time for confirmation;

When the connection block is pushed to the bottom of the push block, the first spring is instantly transformed from the compressed state to the restored deformation state, so that the push block can be quickly pushed out, and the push block is quickly pushed out, so that the connection block and the puncture needle can be quickly pushed out. Move downward to instantly puncture the patient's skin with a large force, thereby effectively avoiding the deviation of the puncture position caused by skin rebound.

2. In this lung piercing needle fixing device, after the puncture needle instantly pierces the skin of the patient's body surface under the action of the restoring deformation force of the first spring, the restoring deformation force of the first spring is also completely released. Push the connecting block and the puncture needle to move downward, the movable plug will be pulled to move by the first rod and the pull rod, and the movable plug will gradually compress the second spring. The pulling force of the second spring, under the action of the pulling force of the second spring, on the one hand can effectively avoid the positional deviation of the puncture needle caused by too fast moving speed, on the other hand, it is also convenient for the subsequent removal of the puncture needle, reducing the pain of the patient .

3. When using the lung puncture needle fixing device, the whole device is moved to the puncture position by the mechanical arm, and the two support plates are respectively pressed against the skin on both sides of the puncture site. When pushing the insert plate and the connecting block to move the puncture needle downward for puncturing, the insert plate will also drive the drive gear to rotate through the teeth arranged on its outer wall, and the drive gear rotates to drive the screw to rotate. The thread and the second thread make the first nut and the second nut move away from each other, the first nut and the second nut move away from each other and push the first push rod and the second push rod outward respectively, and the first push rod and the second push rod are pushed The two moving plates can be separated from each other by the linkage rod and the connecting rod, and the two moving plates can be separated from each other so that the two supporting plates can be separated from each other. The two support plates can automatically tighten the skin at the puncture site, which on the one hand avoids the skin rebounding at the puncture site, and on the other hand frees the doctor's hands. Puncture failure problem.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the overall structure of the present invention;

Fig. 2 is the sectional view of the side loading block part in the overall structure of the present invention;

Fig. 3 is the enlarged schematic diagram of the side loading block part of the present invention;

Fig. 4 is the sectional view of the hinge rod part of the present invention;

5 is a cross-sectional view of the overall structure of the present invention;

Fig. 6 is the sectional view of the top cabinet part of the present invention;

Fig. 7 is the sectional view of the base cabinet part of the present invention;

FIG. 8 is a schematic view of the working state of the support plate of the present invention.

In the figure: 1. Mounting plate; 2. Insert plate; 3. Push handle; 4. Connecting block; 5. Puncture needle; 703, movable plug; 704, pull rod; 705, second spring; 8, second hinge seat; 9, push block; 10, movable slot; 11, first spring; 12, side loading block; 13, vertical rod; 14 , top cabinet; 15, first push rod; 16, second push rod; 17, screw rod; 18, first thread; 19, second thread; 20, first nut; 21, second nut; 22, drive gear ; 23, teeth; 24, linkage rod; 25, rod slot; 26, base cabinet; 27, moving plate; 28, support plate; 29, limit rod; 30, connecting rod.

Detailed ways

Example 1:

Please refer to Fig. 1-Fig. 4 , the lung needle fixing device includes a mounting plate 1, an inserting plate 2 is inserted in the mounting plate 1, a push handle 3 is arranged at the top of the inserting plate 2, and a bottom end of the inserting plate 2 is fixedly connected with a The connecting block 4 is provided with a puncture needle 5 at the bottom of the connecting block 4. When in use, the whole device is moved to the puncturing position by a mechanical arm, the puncture needle 5 is aligned with the puncture point, and then the inserting plate 2 is pushed down by the push handle 3, The downward movement of the insert plate 2 drives the puncture needle 5 to move downward through the connecting block 4, so that the puncture can be performed;

The connection position of the robotic arm can be set according to actual needs, and can be directly installed on the mounting plate 1 or on the top cabinet 14 on the top of the mounting plate 1;

The left and right sides of the connecting block 4 are provided with a first hinge seat 6, the inner wall of the first hinge seat 6 is movably provided with a hinge rod 7, and the other end of the hinge rod 7 is movably connected with a second hinge seat 8, and the second hinge seat 8 It is fixedly installed on the outer wall of the push block 9, the push block 9 is movably arranged in the movable groove 10, the movable groove 10 is opened in the side loading block 12, and the side loading block 12 is fixed on the bottom of the mounting plate 1 through the vertical rod 13, such as As shown in FIG. 3 , an elastic element is arranged between the push block 9 and the inner side wall of the movable slot 10 . In this embodiment, the elastic element is a first spring 11 , and one end of the first spring 11 is fixedly installed on the outer wall of the push block 9 , the other end of the first spring 11 is fixedly installed on the inner side wall of the movable slot 10;

When the plug board 2 and the connecting block 4 just start to move downward, the connecting block 4 will gradually push the push block 9 to move inward through the hinge rod 7, and the first spring 11 is gradually compressed at this time, so that, through the resistance of the first spring 11, It can make the movement of the puncture needle 5 relatively slow before the puncture, and give the doctor sufficient confirmation time;

When the connecting block 4 is pushed to the bottom of the pushing block 9, the first spring 11 instantly changes from the compressed state to the restored deformation state, so that the pushing block 9 can be pushed out quickly, and the pushing block 9 is pushed out quickly so that the connecting block can be pushed out quickly. 4 and the puncture needle 5 move downward rapidly, puncturing the patient's body surface skin instantly with a large force, thereby effectively avoiding the deviation of the puncture position caused by skin rebound;

As shown in FIG. 4 , the hinge rod 7 includes a head rod 701, a tail barrel 702, a movable plug 703, a pull rod 704 and a second spring 705. The inner wall of the first hinge seat 6 is movably provided with the head rod 701, and the second hinge seat 8 A tail barrel 702 is movably arranged on the inner wall, a movable plug 703 is movably arranged on the inner wall of the tail barrel 702, a pull rod 704 is fixedly installed on the outer wall of the movable plug 703, and the end of the pull rod 704 extends to the outside of the tail barrel 702 and is fixedly connected with the head rod 701, A second spring 705 is also sleeved on the pull rod 704;

After the puncture needle 5 instantly pierces the skin of the patient's body surface under the action of the restoring deformation force of the first spring 11, the restoring deformation force of the first spring 11 is also completely released. When the puncture needle 5 moves downward, the movable plug 703 will be pulled by the first rod 701 and the pull rod 704 to move, and the movable plug 703 will move and gradually compress the second spring 705. The gradually increasing pulling force of the second spring 705, under the action of the pulling force of the second spring 705, on the one hand can effectively avoid the positional deviation of the puncture needle 5 caused by too fast moving speed, on the other hand, it is also convenient for the follow-up of the puncture needle 5. removal, which relieves the pain of the patient.

Embodiment 2:

Referring to FIGS. 5-8 , on the basis of the first embodiment, a top cabinet 14 is fixedly installed on the top of the mounting plate 1 , and a first push rod 15 and a second push rod 16 are interspersed on the left and right sides of the top cabinet 14 respectively. , the drive mechanism arranged between the plug-in board 2 and the first push rod 15 and the second push rod 16 is used to synchronously drive the first push rod 15 when the connecting block 4 and the puncture needle 5 are pushed down by the plug-in board 2 and the second push rod 16 extending outward. In this embodiment, the driving mechanism includes a screw 17, a first nut 20, a second nut 21, a driving gear 22 and teeth 23, and the top cabinet 14 is rotatably provided with a screw 17 , the left side of the outer wall of the screw 17 and the right side of the outer wall are respectively provided with a first thread 18 and a second thread 19 with opposite directions of rotation, and the outer walls of the first thread 18 and the second thread 19 are respectively threadedly connected with a first nut 20 and a second thread 19. Two nuts 21, the first nut 20 and the second nut 21 are all slidably arranged on the side wall of the top cabinet 14, so that the first nut 20 and the second nut 21 can only translate left and right under the driving of the screw 17, but cannot rotate;

The first push rod 15 and the second push rod 16 are respectively fixed and installed on the opposite side of the first nut 20 and the second nut 21. When the first nut 20 and the second nut 21 are far away from each other, the first push rod can also be The rod 15 and the second push rod 16 are also extended simultaneously;

As shown in FIG. 6 , a driving gear 22 is fixedly arranged in the middle of the screw 17, and teeth 23 are arranged on the outer wall of the plug-in board 2. The driving gear 22 and the teeth 23 are engaged with each other. The teeth 23 can make the driving gear 22 rotate, and then make the screw 17 rotate;

As shown in FIG. 5 , the bottoms of the two side loading blocks 12 are fixedly installed with base cabinets 26 , and the bottoms of the two base cabinets 26 are movably provided with support plates 28 , which are arranged on the first push rod 15 and the second push rod 16 The linkage mechanism with the two support plates 28, when the first push rod 15 and the second push rod 16 are both extended outwards, is used to synchronously drive the two support plates 28 away from each other on the surface of the skin to tighten the skin ;

In this embodiment, the linkage mechanism includes a linkage rod 24, a connecting rod 30 and a moving plate 27. The bottoms of the ends of the first push rod 15 and the second push rod 16 are fixedly installed with the linkage rod 24, and the outer wall of the bottom of the linkage rod 24 is fixed on the outer wall. A connecting rod 30 is installed, the end of the connecting rod 30 is fixedly connected with a moving plate 27, and the moving plate 27 is movably arranged in the bottom cabinet 26 and its bottom end extends to the outside of the bottom cabinet 26 and is fixedly connected with the support plate 28;

When in use, the whole device is moved to the puncture position by the mechanical arm, the two support plates 28 are respectively pressed against the skin on both sides of the puncture site, the puncture needle 5 is aligned with the puncture point, and when the push handle 3 pushes down the insert plate 2 and the puncture point. When the connecting block 4 moves the puncture needle 5 downward for puncturing, the insert plate 2 will also drive the driving gear 22 to rotate through the teeth 23 provided on its outer wall, and the rotation of the driving gear 22 drives the screw 17 to rotate, and the screw 17 rotates through its outer wall. The opposite first thread 18 and second thread 19 move the first nut 20 and the second nut 21 away from each other, which push the first push rod 15 and the second push rod 16 outward respectively. , the first push rod 15 and the second push rod 16 are pushed through the linkage rod 24 and the connecting rod 30 to make the two moving plates 27 move away from each other, and the two moving plates 27 move away from each other so as to make the two support plates 28 move away from each other, Since the two support plates 28 abut the skin on both sides of the puncture site respectively, the two support plates 28 that are far away from each other can automatically tighten the skin at the puncture site. The hands of the doctor are freed, and the doctor no longer has to tighten the skin with his hands, which avoids the problem of easy puncture failure by one-handed puncture.

The side loading block 12 is provided with a rod groove 25 corresponding to the linkage rod 24, and the linkage rod 24 is movably arranged inside the rod groove 25, which can make the movement of the linkage rod 24 more stable;

A limit rod 29 is also inserted into the interior of the moving plate 27, and the left and right ends of the limit rod 29 are fixedly installed on the inner walls of the left and right sides of the base cabinet 26 respectively. The movement of 27 in the base cabinet 26 is more stable, and it will not fall off from the base cabinet 26 .

The working principle of the present invention and the use flow:

When in use, the whole device is moved to the puncture position by the mechanical arm, the puncture needle 5 is aligned with the puncture point, and then the insert plate 2 is pushed down by the push handle 3, and the insert plate 2 moves downward through the connecting block 4 to drive the puncture needle 5 to the puncture point. move down so that the puncture can be performed;

When the plug board 2 and the connecting block 4 just start to move downward, the connecting block 4 will gradually push the push block 9 to move inward through the hinge rod 7, and the first spring 11 is gradually compressed at this time, so that, through the resistance of the first spring 11, It can make the movement of the puncture needle 5 relatively slow before the puncture, and give the doctor sufficient confirmation time;

When the connecting block 4 is pushed to the bottom of the pushing block 9, the first spring 11 instantly changes from the compressed state to the restored deformation state, so that the pushing block 9 can be pushed out quickly, and the pushing block 9 is pushed out quickly so that the connecting block can be pushed out quickly. 4 and the puncture needle 5 move downward rapidly, puncturing the patient's body surface skin instantly with a large force, thereby effectively avoiding the deviation of the puncture position caused by skin rebound;

After the puncture needle 5 instantly pierces the skin of the patient's body surface under the action of the restoring deformation force of the first spring 11, the restoring deformation force of the first spring 11 is also completely released. When the puncture needle 5 moves downward, the movable plug 703 will be pulled by the first rod 701 and the pull rod 704 to move, and the movable plug 703 will move and gradually compress the second spring 705. The gradually increasing pulling force of the second spring 705, under the action of the pulling force of the second spring 705, on the one hand can effectively avoid the positional deviation of the puncture needle 5 caused by too fast moving speed, on the other hand, it is also convenient for the follow-up of the puncture needle 5. the removal of the patient's pain relief;

When in use, the whole device is moved to the puncture position by the mechanical arm, the two support plates 28 are respectively pressed against the skin on both sides of the puncture site, the puncture needle 5 is aligned with the puncture point, and when the push handle 3 pushes down the insert plate 2 and the puncture point. When the connecting block 4 moves the puncture needle 5 downward for puncturing, the insert plate 2 will also drive the driving gear 22 to rotate through the teeth 23 provided on its outer wall, and the rotation of the driving gear 22 drives the screw 17 to rotate, and the screw 17 rotates through its outer wall. The opposite first thread 18 and second thread 19 move the first nut 20 and the second nut 21 away from each other, which push the first push rod 15 and the second push rod 16 outward respectively. , the first push rod 15 and the second push rod 16 are pushed through the linkage rod 24 and the connecting rod 30 to make the two moving plates 27 move away from each other, and the two moving plates 27 move away from each other so as to make the two support plates 28 move away from each other, Since the two support plates 28 abut the skin on both sides of the puncture site respectively, the two support plates 28 that are far away from each other can automatically tighten the skin at the puncture site. The hands of the doctor are freed, and the doctor no longer has to tighten the skin with his hands, which avoids the problem of easy puncture failure by one-handed puncture.

Claims (10)

1. Lung puncture needle fixing device, including mounting panel (1), its characterized in that: an inserting plate (2) is inserted into the mounting plate (1), a push handle (3) is arranged at the top end of the inserting plate (2), a connecting block (4) is fixedly connected to the bottom end of the inserting plate (2), and a puncture needle (5) is arranged at the bottom of the connecting block (4);

the left and right sides of connecting block (4) all is provided with first articulated seat (6), the inner wall activity of first articulated seat (6) is provided with articulated rod (7), the other end swing joint of articulated rod (7) has articulated seat (8) of second, the articulated seat of second (8) fixed mounting is on the outer wall of ejector pad (9), ejector pad (9) activity sets up in activity groove (10), set up in side loading block (12) activity groove (10), side loading block (12) set firmly the bottom at mounting panel (1) through montant (13).

2. The lung puncture needle fixing device according to claim 1, wherein: an elastic element is arranged between the push block (9) and the inner side wall of the movable groove (10).

3. The lung puncture needle fixing device according to claim 2, wherein: the elastic element is a first spring (11), one end of the first spring (11) is fixedly installed on the outer wall of the push block (9), and the other end of the first spring (11) is fixedly installed on the inner side wall of the movable groove (10).

4. The lung puncture needle fixing device according to claim 1, wherein: the hinged rod (7) comprises a first rod (701), a tail cylinder (702), a movable plug (703), a pull rod (704) and a second spring (705), the first rod (701) is movably arranged on the inner wall of the first hinged seat (6), the tail cylinder (702) is movably arranged on the inner wall of the second hinged seat (8), the movable plug (703) is movably arranged on the inner wall of the tail cylinder (702), the pull rod (704) is fixedly arranged on the outer wall of the movable plug (703), and the tail end of the pull rod (704) extends to the outside of the tail cylinder (702) and is fixedly connected with the first rod (701);

and a second spring (705) is sleeved on the pull rod (704).

5. The lung puncture needle fixing device according to claim 1, wherein: the top fixed mounting of mounting panel (1) has top cabinet (14), the left and right sides of top cabinet (14) alternates respectively and is provided with first push rod (15) and second push rod (16), sets up the actuating mechanism between picture peg (2) and first push rod (15) and second push rod (16), when promoting connecting block (4) and pjncture needle (5) through picture peg (2) and move down for drive first push rod (15) and second push rod (16) outwards stretch out in step.

6. The lung puncture needle fixing device according to claim 5, wherein: the driving mechanism comprises a screw rod (17), a first nut (20), a second nut (21), a driving gear (22) and teeth (23), the screw rod (17) is arranged in the top cabinet (14) in a rotating mode, the left side of the outer wall of the screw rod (17) and the right side of the outer wall of the screw rod (17) are respectively provided with a first thread (18) and a second thread (19) which are opposite in rotating direction, the outer walls of the first thread (18) and the second thread (19) are respectively in threaded connection with the first nut (20) and the second nut (21), the first nut (20) and the second nut (21) are both arranged on the side wall of the top cabinet (14) in a sliding mode, and the first push rod (15) and the second push rod (16) are respectively and fixedly installed on the opposite side of the first nut (20) and the second nut (21);

the middle part of screw rod (17) is fixed and is provided with drive gear (22), the outer wall of picture peg (2) is provided with tooth (23), mesh mutually between drive gear (22) and tooth (23).

7. The lung puncture needle fixing device according to claim 5, wherein: bottom cabinets (26) are fixedly arranged at the bottoms of the two side loading blocks (12), and supporting plates (28) are movably arranged at the bottoms of the two bottom cabinets (26);

the linkage mechanism is arranged between the first push rod (15), the second push rod (16) and the two supporting plates (28), and when the first push rod (15) and the second push rod (16) extend outwards, the linkage mechanism is used for synchronously driving the two supporting plates (28) to be away from each other on the surface of the skin so as to tension the skin.

8. The lung puncture needle fixing device according to claim 7, wherein: the link gear includes gangbar (24), connecting rod (30) and movable plate (27), the equal fixed mounting in bottom of first push rod (15) and second push rod (16) end has gangbar (24), fixed mounting has connecting rod (30) on the outer wall of gangbar (24) bottom, the terminal fixedly connected with movable plate (27) of connecting rod (30), movable plate (27) activity sets up in end cabinet (26) and its bottom extends to the outside of end cabinet (26) and links to each other with fagging (28) are fixed.

9. The lung puncture needle fixing device according to claim 8, wherein: the side loading block (12) is provided with a rod groove (25) corresponding to the linkage rod (24), and the linkage rod (24) is movably arranged in the rod groove (25).

10. The lung puncture needle fixing device according to claim 8, wherein: limiting rods (29) are further inserted into the moving plate (27), and the left end and the right end of each limiting rod (29) are respectively and fixedly installed on the inner walls of the left side and the right side of the bottom cabinet (26).

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