Puncture positioning support with thoracic cavity limiting function

Abstract

The invention relates to the field of medical auxiliary instruments. The puncture positioning support with the thoracic cavity limiting function comprises a support body shaped like a Chinese character'fang ', and the support body is composed of an L-shaped base plate and a top frame arranged on the top of the base plate. A puncture guider capable of moving in the length direction of the top frame is arranged on the top frame, and a thoracic cavity limiting mechanism is further arranged on the top frame; the chest limiting mechanism comprises two vertical pressing rods capable of ascending and descending in the vertical direction, and the lower ends of the pressing rods are provided with pressing plates used for pressing and covering the chest of a patient. The thoracic cavity undulation of a patient can be limited, the puncture interference caused by breathing of the patient is avoided, and the puncture precision and stability can be improved.

Description

Technical Field

[0001] The present invention relates to the field of medical auxiliary devices, and particularly to a puncture positioning bracket. Background Art

[0002] Thoracentesis is a commonly used method for tissue biopsy and fluid drainage during the treatment processes of cardiology, hepatobiliary medicine, etc. At present, during traditional puncture, mainly relying on the doctor's experience, the puncture device is directly held by hand for puncture. However, this puncture method has high requirements for the doctor's proficiency and state, and due to inaccurate positioning, there is a certain risk of safety hazards. Especially for some patients with relatively difficult puncture and deeper puncture depth, this kind of hidden danger will be greatly increased.

[0003] For this reason, many puncture guiding tools have emerged in the prior art. They realize the guiding of the puncture needle through a sleeve / tube with a puncture guiding function that can fix the direction, thereby greatly improving the accuracy and stability of the doctor's puncture operation and reducing the puncture risk. However, in actual operation, we found that when this kind of puncture guiding tool is used for puncture at other parts of the patient, it can be well applied. But when performing thoracentesis, due to the chest cavity undulation caused by the patient's breathing, this simple puncture guiding tool with a fixed base still cannot be well applied even under the endoscope; generally, when a doctor performs puncture, he will communicate with the patient through the doctor's order, telling the patient to hold his breath for a short time, so as to eliminate the interference caused by the contraction and expansion movement of the chest cavity in a short time, and the doctor quickly inserts the needle within this time window to achieve positioning puncture. However, for some patients, due to their inability to cooperate well with holding their breath according to the doctor's order, they cannot effectively cooperate with the doctor, which easily leads to puncture failure. Summary of the Invention

[0004] The purpose of the present invention is to provide a puncture positioning bracket with a chest cavity limiting function that can reduce respiratory interference.

[0005] To achieve the above-mentioned invention purpose, the technical solution adopted by the present invention is a puncture positioning bracket with a chest cavity limiting function, including a U-shaped bracket main body, and the main body is composed of an L-shaped backing plate and a top frame arranged on the top of the backing plate;

[0006] A puncture guide is arranged on the top frame and can move in the length direction of the top frame, and a chest cavity limiting mechanism for restricting the chest cavity undulation of the patient is also arranged on the top frame;

[0007] The chest cavity limiting mechanism includes two vertical pressure rods that can move up and down along the vertical direction, and a pressing plate for pressing on the patient's chest is arranged at the lower end of the pressure rod.

[0008] Preferably, the pressure rod is a screw rod, and a screw hole matching with the screw rod is arranged on the top frame, and lifting is formed by rotating the screw rod.

[0009] Preferably, the lower end of the pressure rod is hinged to the pressing plate, and locking or unlocking is formed through a locking bolt.

[0010] Preferably, the thoracic cavity limiting mechanism further includes a temporary release assembly. The temporary release assembly includes a lifting sleeve, and the lifting sleeve is arranged at a position on the top frame opposite to the screw rod; the inside of the lifting sleeve is a square hole, and a square mounting block capable of lifting in the square hole is fitted in the square hole; the screw hole is arranged on the mounting block;

[0011] A bottom groove is arranged at the bottom of the middle section of the top frame. The temporary release assembly further includes a lock arranged in the bottom groove; the lock includes two pulling ropes and two coiled reels with torsion springs arranged side by side. One ends of the two pulling ropes are respectively wound on the two coiled reels, and the other ends respectively extend below the lifting sleeves on both sides and are connected to the lifting sleeves; an unlocking sliding rod is further arranged between the two coiled reels. The upper end of the unlocking sliding rod passes through a sliding hole on the top frame, and a pressing head is arranged at the end. A return spring is arranged between the pressing head and the top frame; a rubber friction head is arranged at the lower end of the unlocking sliding rod, and the rubber friction head can be clamped between the two coiled reels under the action of the return spring to form locking of the coiled reels.

[0012] Preferably, friction teeth are annularly arranged on the circumferential surface at the lower end of the coiled reel, and the upper end of the rubber friction head is spherical.

[0013] Preferably, a rope groove extending along the length direction of the top frame is arranged on the bottom surface of the top frame. One end of the rope groove is communicated with the bottom groove, and the other end is communicated with the inner cavity of the lifting sleeve; the pulling rope is located in the rope groove.

[0014] Preferably, the top frame is hinged to the backing plate, and locking or unlocking is formed through a locking handwheel.

[0015] Preferably, a diagonal brace is arranged on one side of the vertical edge of the backing plate. One end of the diagonal brace is hinged to the vertical edge of the backing plate, and a hook notch is arranged at the other end. A short column is arranged at a position on the top frame opposite to the hook notch, and the hook notch of the diagonal brace can be clamped on the short column to form support for the top frame.

[0016] Preferably, a chute with a T-shaped cross-section extending along the length direction of the top frame is arranged at the rear of the top frame, and strip-shaped pin grooves are arranged side by side on one side of the chute;

[0017] The puncture guide includes a T-shaped slider adapted in a chute. A locking pin is provided on the slider and is adapted with a transverse locking nut. The locking pin is located in a pin slot and forms the locking of the slider and the top frame through the transverse locking nut. The rod part of the T-shaped slider extends out of the top frame from the rear side and is connected to a support arm. A puncture guide tube is provided on the support arm.

[0018] Preferably, a vertical hole is provided on the rod part of the T-shaped slider. One end of the support arm close to the slider is provided with an adjusting rod adapted to the vertical hole. Two height locking nuts are provided on the adjusting rod, and the height of the support arm is locked through the two height locking nuts.

[0019] A spherical shell is provided in the middle of the support arm, and an angle adjusting body is provided in the spherical shell. The angle adjusting body forms a lock with the spherical shell through an angle locking bolt. The puncture guide tube is installed in the angle adjusting body and is threadedly connected to the angle adjusting body.

[0020] The beneficial effects of the present invention are mainly reflected in that it can limit the chest cavity undulation of the patient, avoid the interference to puncture caused by the patient's breathing, and improve the accuracy and stability of puncture. Specifically, during the use of the present invention, after the stent main body is installed, the patient lies on the backing plate in the prone position or the supine position according to needs. After the patient exhales and holds their breath, the operator adjusts the pressure rod until the pressing plate presses the patient's body. Under the endoscope or fluoroscopy, the puncture guide is adjusted to the required position and locked as needed, and then the puncture can be carried out. During the puncture process, since the present invention can limit the chest cavity of the patient through the pressing plate, avoiding large-scale undulation, it can effectively cooperate with the doctor for puncture needle insertion operation, greatly improving the accuracy and stability of puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural view of the present invention;

[0022] Figure 2 is Figure 1 the enlarged view of part A in

[0023] Figure 3 is Figure 1 the enlarged view of part B in

[0024] Figure 4 is Figure 1 the view in the direction of C-C of the structure shown in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] As Figure 1 shown, the present invention is a puncture positioning stent with a chest cavity limiting function, mainly used for guiding puncture needle insertion in some thoracentesis with difficult and deep puncture difficulty to ensure the stability and accuracy of puncture.

[0026] The present invention includes a bracket main body in a C shape, and the main body is composed of an L-shaped backing plate 1 and a top frame 2 arranged on the top of the backing plate 1. The backing plate 1 adopts an integral structure, generally made of aluminum alloy material or high-strength plastic, and an anti-slip layer is provided at the bottom thereof to improve the stability of its installation. When in use, the patient lies supine or prone on the backing plate 1. In order to improve the overall comfort, the backing plate 1 can be provided with a certain ergonomic arc.

[0027] The top frame 2 is in a strip shape and serves as the installation base for the puncture guide and the installation base for the thoracic cavity limiting mechanism. It is designed in a split manner with the backing plate 1 and is assembled during use, or the two are hinged, that is, the top frame 2 is hinged to the backing plate 1 and is locked or unlocked through a locking handwheel 17. The top frame 2 can be swung to a horizontal position or lifted to facilitate the patient to lie down. Since the top frame 2 is the installation base for the core components of the present invention, in order to improve its overall stability, as Figure 1 shown in [reference], a diagonal brace 18 can be provided on one side of the vertical edge of the backing plate 1. One end of the diagonal brace 18 is hinged to the vertical edge of the backing plate 1, and the other end is provided with a hook notch. A short post 19 is provided at a position on the top frame 2 opposite to the hook notch, and the hook notch of the diagonal brace 18 can be clamped on the short post 19 to form a support for the top frame 2.

[0028] A puncture guide capable of moving in the length direction of the top frame 2 is provided on the top frame 2 of the present invention. The puncture guide can move on the top frame 2 to adjust its position in the transverse direction. There are many specific structures of the puncture guide. For example: as Figure 1 and 4 shown in [reference], generally, a chute 20 with a T-shaped cross section extending along the length direction of the top frame 2 is provided at the rear of the top frame 2. A strip-shaped pin slot 21 is arranged side by side on one side of the chute 20. The puncture guide includes a T-shaped slider 22 adapted to the chute 20. A locking pin 23 is provided on the slider 22 and is adapted with a transverse locking nut 24. The locking pin 23 is located in the pin slot 21, and the slider 22 is locked to the top frame 2 through the transverse locking nut 24. By loosening the transverse locking nut 24, the slider 22 can slide on the top frame 2 to facilitate the adjustment of the transverse position of the puncture guide. The T-shaped rod portion of the slider 22 extends out of the top frame 2 from the rear and is connected to a support arm 25. A puncture guide tube 26 is provided on the support arm 25, and the puncture guide tube 26 is used for puncture guidance.

[0029] Of course, in order to broaden the adjustable range of the puncture guiding tube 26 and achieve multi-directional adjustment in the horizontal, vertical, and angular directions, a better approach in the present invention may be that a vertical hole is provided on the T-shaped rod portion of the slider 22. An adjusting rod 27 that cooperates with the vertical hole is provided at one end of the support arm 25 close to the slider 22. Two height locking nuts 28 are provided on the adjusting rod 27, and the height of the support arm 25 is locked by the two height locking nuts 28. By adjusting the height locking nuts 28, the height of the adjusting rod 27 can be adjusted. After the adjustment is in place, the upper and lower height locking nuts 28 can be screwed to clamp the rod portion of the slider 22.

[0030] To achieve angular adjustment, a spherical shell 29 is provided in the middle of the support arm 25, and an angular adjustment body 30 is provided inside the spherical shell 29. The angular adjustment body 30 is locked with the spherical shell 29 through an angular locking bolt 31. The puncture guiding tube 26 is installed inside the angular adjustment body 30 and is threadedly connected to the angular adjustment body 30. Of course, in addition to the above structural forms, it is also feasible to mount the puncture guide on the top frame 2 and achieve horizontal, vertical, and angular adjustment of the puncture guide through certain designs. Since there are many specific structural forms that can be achieved, the present invention will not list them here.

[0031] Compared with the traditional puncture positioning bracket, the biggest difference of the present invention is that a thoracic cavity limiting mechanism is also provided on the top frame 2. The thoracic cavity limiting mechanism is used to limit the undulation of the patient's thoracic cavity, avoid dislocation during the puncture process or during the positioning process, and ensure the accuracy and stability of the puncture. It includes two vertical pressure rods 3 that can be lifted and lowered vertically. A pressing plate 4 for pressing on the patient's chest is provided at the lower end of the pressure rod 3. From the perspective of simple structure, the simplest way may be that the pressure rod 3 is a screw rod, and a threaded hole matching the screw rod is provided on the top frame 2. The lifting is achieved by rotating the screw rod. This form of threaded cooperation not only facilitates adjustment but also synchronously locks the screw rod to ensure the stability of the pressure rod 3 and the pressing plate 4. The specific shape of the pressing plate 4 can be designed in combination with ergonomics and set as an arc or some shapes with higher comfort. To meet the need for adjusting the angle of the pressing plate 4, the present invention can hinge the lower end of the pressure rod 3 to the pressing plate 4 and lock or unlock it through a locking bolt 5.

[0032] During the use of the present invention, after the stent body is installed, the patient lies on the backing plate 1 in the prone position or supine position as needed. After the patient exhales and holds their breath, the operator adjusts the pressure rod 3 until the pressing plate 4 presses on the patient's body. Under the microscope or fluoroscopy, the puncture guide is adjusted to the required position and locked as needed, and then puncture can be performed. During the puncture process, since the present invention can limit the patient's chest cavity through the pressing plate 4, avoiding large-scale fluctuations, it can effectively cooperate with the doctor in the puncture needle insertion operation, greatly improving the accuracy and stability of the puncture.

[0033] Before puncture, since positioning often takes a lot of time, and during this period, it is difficult for the patient to keep holding their breath all the time. Usually, the pressing plate 4 can be released intermittently, so that the patient can breathe more conveniently. Also, since the pressure rod 3 of the present invention is installed on the top frame 2 by means of threads, this will be rather troublesome when releasing, and since it is impossible to ensure that the height adjusted each time is exactly the same, there may be errors when cooperating with the under-microscope positioning of the puncture guide.

[0034] Therefore, a better way for the present invention is that it can ensure the relatively stable pressing positions of the pressure rod 3 and the pressing plate 4, and at the same time can realize the rapid release of the pressing plate 3 and the pressure rod 4, so as to meet the patient's breathing needs when the positioning time is relatively long. For this purpose, as shown in Figure 1-3 The thoracic cavity limiting mechanism of the present invention further includes a temporary release assembly. The temporary release assembly includes a lifting sleeve 6, and the lifting sleeve 6 is arranged at a position on the top frame 2 opposite to the screw rod. The inside of the lifting sleeve 6 is a square hole, and a square mounting block 7 that can move up and down in the square hole is fitted in the square hole. The mounting block 7 can move up and down in the square hole but cannot rotate. The screw hole is arranged on the mounting block 7.

[0035] A bottom groove 8 is arranged at the bottom of the middle section of the top frame 2. The temporary release assembly further includes a lock arranged in the bottom groove 8. Through the lock, when releasing, the mounting block 7 in the lifting sleeve 6 can move up and down, thus relieving the pressure for the patient to inhale. When the patient exhales, the mounting block 7 can reset and quickly lock.

[0036] As Figure 3As shown in the figure, the locker of the present invention includes two pulling ropes 9 and two coiled reels 10 with torsion springs arranged side by side. One end of each of the two pulling ropes 9 is correspondingly wound on the two coiled reels 10, and the other end extends to the lower side of the lifting sleeves 6 on both sides and is connected to the lifting sleeves 6. An unlocking slide rod 11 is further arranged between the two coiled reels 10. The upper end of the unlocking slide rod 11 passes through the sliding hole on the top frame 2, and a pressing head 12 is arranged at the end. A return spring 13 is arranged between the pressing head 12 and the top frame 2. A rubber friction head 14 is arranged at the lower end of the unlocking slide rod 11. The rubber friction head 14 can be clamped between the two coiled reels 10 under the action of the return spring 13 to lock the coiled reels 10.

[0037] During use, after the patient exhales and holds their breath, the pressure rod 3 and the pressing plate 4 are adjusted to the pressing state normally as described above, and then the position of the puncture guide can be determined in cooperation with the operation under the mirror to ensure its accurate positioning. When the time is relatively long, the operator can press the pressing head 12 of the unlocking slide rod 11 to drive the unlocking slide rod 11 to move downward, and the rubber friction head 14 is separated from the coiled reel 10, and the coiled reel 10 is in a rotatable state. After the patient inhales, as the chest expands, the mounting block 7 in the lifting sleeve 6 can move upward, pulling the pulling rope 9 and the coiled reel 10. When the patient exhales, under the action of the torsion spring of the coiled reel 10, it can wind up the pulling rope 9 again, so that the mounting block 7 is reset. Since the pressure rod 3 on the mounting block 7 does not move relative to the mounting block 7, it can always maintain relative stability with the human body. After the patient exhales in place, release the unlocking slide rod 11, and the coiled reel 10 can be quickly locked, forming a quick lock on the mounting block 7. Thus, on the basis of ensuring position stability, the intermittent temporary unlocking requirement can be met.

[0038] In addition, in order to further improve the friction between the coiled reel 10 and the rubber friction head 14 and ensure the locking effect, friction teeth 15 are annularly arranged on the circumferential surface at the lower end of the coiled reel 10. The upper end of the rubber friction head 14 is spherical to facilitate its better clamping between the two coiled reels 10. In order to further improve the stability of the movement of the pulling rope 9 itself, a rope groove 16 extending along the length direction of the top frame 2 is arranged on the bottom surface of the top frame 2. One end of the rope groove 16 is communicated with the bottom groove 8, and the other end is communicated with the inner cavity of the lifting sleeve 6. The pulling rope 9 is located in the rope groove 16.

Claims

1. A puncture positioning bracket with a thoracic cavity limiting function, characterized in that: It includes a U-shaped bracket body, which is composed of an L-shaped backing plate (1) and a top frame (2) arranged on the top of the backing plate (1); A puncture guide is arranged on the top frame (2) and can move in the length direction of the top frame (2). A thoracic cavity limiting mechanism is also arranged on the top frame (2); The thoracic cavity limiting mechanism includes two vertical pressure rods (3) that can move up and down vertically. A pressing plate (4) for pressing on the patient's chest is arranged at the lower end of the pressure rod (3).

2. The puncture positioning bracket with a thoracic cavity limiting function according to claim 1, wherein: The pressure rod (3) is a screw rod, and a threaded hole matching the screw rod is arranged on the top frame (2). The lifting is formed by rotating the screw rod.

3. The puncture positioning bracket with a thoracic cavity limiting function according to claim 2, wherein: The lower end of the pressure rod (3) is hinged to the pressing plate (4) and is locked or unlocked through a locking bolt (5).

4. The puncture positioning bracket with a thoracic cavity limiting function according to claim 3, wherein: The thoracic cavity limiting mechanism further includes a temporary release assembly. The temporary release assembly includes a lifting sleeve (6), and the lifting sleeve (6) is arranged at a position on the top frame (2) opposite to the screw rod; the inside of the lifting sleeve (6) is a square hole, and a square mounting block (7) that can move up and down in the square hole is fitted in the square hole; the threaded hole is arranged on the mounting block (7); A bottom groove (8) is arranged at the bottom of the middle section of the top frame (2). The temporary release assembly further includes a lock arranged in the bottom groove (8); the lock includes two pulling ropes (9) and two coiled disks (10) with torsion springs arranged side by side. One end of each of the two pulling ropes (9) is correspondingly wound on the two coiled disks (10), and the other ends respectively extend to the lower sides of the lifting sleeves (6) on both sides and are connected to the lifting sleeves (6); an unlocking sliding rod (11) is also arranged between the two coiled disks (10). The upper end of the unlocking sliding rod (11) passes through a sliding hole on the top frame (2), and a pressing head (12) is arranged at the end. A return spring (13) is arranged between the pressing head (12) and the top frame (2); a rubber friction head (14) is arranged at the lower end of the unlocking sliding rod (11), and the rubber friction head (14) can be clamped between the two coiled disks (10) under the action of the return spring (13) to form a lock on the coiled disks (10).

5. The puncture positioning bracket with a thoracic cavity limiting function according to claim 4, wherein: Friction teeth (15) are annularly arranged on the circumferential surface of the lower end of the coiled disk (10), and the upper end of the rubber friction head (14) is spherical.

6. The puncture positioning stent with a thoracic cavity limiting function according to claim 5, characterized in that: A rope groove (16) extending in the length direction of the top frame (2) is arranged on the bottom surface of the top frame (2). One end of the rope groove (16) is communicated with the bottom groove (8), and the other end is communicated with the inner cavity of the lifting sleeve (6); the pulling rope (9) is located in the rope groove (16).

7. The puncture positioning bracket with a thoracic cavity limiting function according to claim 6, characterized in that: The top frame (2) is hinged to the backing plate (1) and is locked or unlocked through a locking handwheel (17).

8. The puncture positioning bracket with a thoracic cavity limiting function according to claim 7, wherein: An inclined strut (18) is arranged on one side of the vertical edge of the backing plate (1). One end of the inclined strut (18) is hinged to the vertical edge of the backing plate (1), and a hook notch is arranged at the other end. A short column (19) is arranged at a position on the top frame (2) opposite to the hook notch. The hook notch of the inclined strut (18) can be clamped on the short column (19) to form a support for the top frame (2).

9. The puncture positioning stent with a thoracic cavity limiting function according to claim 8, wherein: A chute (20) with a T-shaped cross-section extending along the length direction of the top frame (2) is provided at the rear of the top frame (2). A strip-shaped pin slot (21) is arranged side by side on one side of the chute (20); the puncture guide includes a T-shaped slider (22) adapted in the chute (20). A locking pin (23) is provided on the slider (22) and is adapted with a transverse locking nut (24). The locking pin (23) is located in the pin slot (21), and the slider (22) is locked with the top frame (2) through the transverse locking nut (24); the T-shaped rod portion of the slider (22) extends out of the top frame (2) from the rear side and is connected to the support arm (25); a puncture guide tube (26) is provided on the support arm (25).

10. The puncture positioning bracket with a thoracic cavity limiting function according to claim 9, characterized in that: A vertical hole is provided on the T-shaped rod portion of the slider (22). An adjusting rod (27) matching the vertical hole is provided at one end of the support arm (25) close to the slider (22). Two height locking nuts (28) are provided on the adjusting rod (27), and the height of the support arm (25) is locked through the two height locking nuts (28); A spherical shell (29) is provided in the middle of the support arm (25), and an angle adjusting body (30) is provided in the spherical shell (29). The angle adjusting body (30) is locked with the spherical shell (29) through an angle locking bolt (31); the puncture guide tube (26) is installed in the angle adjusting body (30) and is threadedly connected to the angle adjusting body (30).

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