A puncture needle with a limiting structure

Abstract

This utility model relates to the field of pulmonary nodule puncture needle technology, and discloses a puncture needle with a limiting structure, including a needle tube and a needle core. The needle core slides within the needle core. A needle seat is attached to one end of the needle tube, and a needle seat is attached to one end of the needle core. Side plates are fixedly connected to both sides of the needle seat. A square groove is formed on one side of each of the two side plates. A connecting block is slidably connected to each of the two square grooves. A quick-release assembly is provided between the connecting block and the square groove to allow for quick installation and removal of the connecting block. A fixing block is fixedly connected to the upper surface of each of the two connecting blocks. This utility model, through the provided round tube and rod, allows medical staff to reduce their workload when they feel fatigued by moving the rod to contact the skin tissue with the arc-shaped baffle. It eliminates concerns about the needle continuing to penetrate the skin tissue and causing harm to the patient.

Description

Technical Field

[0001] This utility model relates to the field of lung nodule puncture needle technology, and more specifically to a puncture needle with a limiting structure. Background Technology

[0002] A puncture needle is a medical device used in minimally invasive surgery to sample and inject tissues from various organs, including the kidneys, liver, lungs, breasts, thyroid gland, prostate, pancreas, testes, uterus, ovaries, and body surface.

[0003] A search revealed Chinese patent CN217366022U, which discloses a puncture needle. In this device, with the cooperation of a first needle holder and a second needle holder, when the operator combines the needle core and the needle tube, the insertion hole is designed in a funnel shape, making it easy for the end of the needle core to enter the needle tube, reducing operation time and improving operation efficiency. However, after the puncture needle is inserted into the patient's body, if the needle tube does not need to be fully inserted into the patient's body, the medical staff needs to hold the puncture needle at all times. If this is done for a long time, the medical staff will become fatigued, which may pose a safety hazard. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a puncture needle with a limiting structure to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a puncture needle with a limiting structure, comprising a needle tube and a needle core, wherein the needle core slides within the needle core, a needle seat one is bonded to one end of the needle tube, a needle seat two is bonded to one end of the needle core, side plates are fixedly connected to both sides of the needle seat one, a square groove is provided on one side of each of the two side plates, a connecting block is slidably connected to each of the two square grooves, a quick-release assembly is provided between the connecting block and the square groove to allow for quick installation and removal of the connecting block, a fixing block is fixedly connected to the upper surface of each of the two connecting blocks, a circular tube is provided through the fixing blocks, a circular rod is slidably connected to the circular tube, a fixing assembly is provided between the circular tube and the circular rod to fix the circular rod, end blocks are fixedly connected to both ends of the circular rod, wherein a connecting plate is fixedly connected to the outer circumference of the end block near the needle tube, an arc-shaped baffle is fixedly connected to one side of the connecting plate, and the arc surface of the arc-shaped baffle contacts the outer circumference of the needle tube.

[0006] As a further embodiment of this utility model, the quick-release assembly includes two sliding openings on the connecting block, each of the two sliding openings having a clearance opening on one side, a sliding plate slidably connected in each of the two clearance openings, and a sliding groove on one side of each of the two clearance openings. The two sliding grooves pass through the upper and lower surfaces of the connecting block respectively, and a plug rod is slidably connected in the sliding groove. Slots are provided on the top and bottom inner walls of the square groove, and one end of the plug rod is inserted into the slot.

[0007] As a further embodiment of this utility model, a guide rod is fixedly connected between the top inner wall and the bottom inner wall of the clearance opening, and the guide rod passes through the slide plate and is slidably connected to it.

[0008] As a further embodiment of this utility model, the fixing component includes a block fixedly connected to one end of the round tube, the round rod passing through the block and slidably connected thereto, a threaded hole being provided on the upper surface of the block, and a locking knob being threadedly connected inside the threaded hole, the bottom end of the locking knob being in close contact with the bottom end of the round rod.

[0009] As a further embodiment of this utility model, one end of the insertion rod is fixedly connected to a spring, and the other end of the spring is fixed to one side of the inner wall of the slide groove.

[0010] As a further embodiment of this utility model, a rubber sleeve is adhered to the outer wall of the inner part of the slide plate, and the rubber sleeve is provided with anti-slip texture.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model, through the provided round tube and round rod, can reduce the labor intensity of medical staff when they feel fatigued by moving the round rod to contact the arc-shaped baffle with the skin tissue, without worrying about the needle continuing to penetrate the skin tissue and causing harm to the patient.

[0013] 2. This utility model, through its quick-release component, allows the connecting block to be removed from the device when needed, avoiding interference with the normal operation of medical personnel. When it is necessary to fix the depth of needle insertion into the patient's body, the connecting block can be installed on the side plate, and the round tube and round rod on the connecting block can limit its position, facilitating quick installation and removal.

[0014] 3. The present invention, through the fixed component, can further fix the position of the round rod after the arc-shaped baffle on it comes into contact with the patient's skin by locking the knob after the round rod moves inside the round tube, thereby preventing the round rod from sliding inside the round tube and further increasing the stability between the two. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 For the present utility model Figure 1 A partially enlarged structural diagram.

[0017] Figure 3 This is a cross-sectional view of the side plate of this utility model.

[0018] Figure 4This utility model Figure 2 A magnified structural diagram of part A.

[0019] Figure 5 This utility model Figure 3 A magnified structural diagram of part B.

[0020] The attached diagram is labeled as follows: 1. Needle tube; 2. Needle core; 3. Needle seat one; 4. Needle seat two; 5. Side plate; 6. Connecting block; 7. Fixing block; 8. Round tube; 9. Round rod; 10. End block; 11. Connecting plate; 12. Arc-shaped baffle; 13. Square block; 14. Threaded hole; 15. Locking knob; 16. Sliding mouth; 17. Alternating opening; 18. Sliding groove; 19. Slot; 20. Slide plate; 21. Insert rod; 22. Rubber sleeve; 23. Guide rod; 24. Square groove. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Reference Figures 1-5This utility model provides a puncture needle with a limiting structure, including a needle tube 1 and a needle core 2. The needle core 2 slides inside the needle core 2. A needle seat 3 is bonded to one end of the needle tube 1, and a needle seat 4 is bonded to one end of the needle core 2. Side plates 5 are fixedly connected to both sides of the needle seat 3 by bolts. A square groove 24 is opened on one side of each of the two side plates 5. A connecting block 6 is slidably connected in each of the two square grooves 24. A quick-release assembly is provided between the connecting block 6 and the square groove 24 to quickly install and remove the connecting block 6. A fixing block 7 is fixedly connected to the upper surface of each of the two connecting blocks 6 by bolts. A round tube 8 passes through between the fixing blocks 7. A round rod 9 is slidably connected in the round tube 8. A fixing assembly is provided between the round tube 8 and the round rod 9 to fix the round rod 9. End blocks 10 are fixedly connected to both ends of the round rod 9 by bolts. The outer circumference of the end block 10 near the needle tube 1 is fixed by bolts. A connecting plate 11 is fixedly connected, and an arc-shaped baffle 12 is fixedly connected to one side of the connecting plate 11 by bolts. The arc surface of the arc-shaped baffle 12 contacts the outer circumference of the needle tube 1. After the needle tube 1 is inserted into the patient's body at the required position, two connecting blocks 6 are installed on one side of the side plate 5 through a quick-release assembly. Then, the round rod 9 inside the sliding round tube 8 is rotated and moved towards the direction close to the patient's skin. When one side of the arc-shaped baffle 12 contacts the patient's skin, the depth of the needle tube 1 inserted into the patient's skin can be known. Then, the position of the round tube 8 and the round rod 9 is fixed by a fixing assembly. With the provided round tube 8 and round rod 9, when medical staff feel fatigued, the round rod 9 can be moved to the point where the arc-shaped baffle 12 contacts the skin tissue, which can reduce the labor intensity of medical staff and eliminate the worry that the needle tube 1 will continue to extend into the skin tissue and cause harm to the patient.

[0023] In this invention, the quick-release assembly includes two sliding openings 16 on the connecting block 6. Each of the two sliding openings 16 has a clearance opening 17 on one side, and a sliding plate 20 is slidably connected within each clearance opening 17. Each of the two clearance openings 17 has a sliding groove 18 on one side, which passes through the upper and lower surfaces of the connecting block 6. A rod 21 is slidably connected within each sliding groove 18. Slots 19 are provided on the top and bottom inner walls of the square groove 24. One end of the rod 21 is inserted into the slot 19, and a spring is welded to one end of the rod 21. The other end of the spring is fixed to one inner wall of the sliding groove 18. When the connecting block 6 needs to be installed on the device, the sliding plate 20 within the sliding opening 16 is moved simultaneously. During the movement of the sliding plate 20, the rod 21 fixed to it moves along the sliding groove 18, compressing the spring during the movement. When one end of the rod 21 completely disengages from the slot 19, the connecting block 6 can be installed. One side of the connecting block 6 is embedded in the square groove 24 on one side of the side plate 5. After the connecting block 6 is fully embedded in the square groove 24, the slide plate 20 can be released. At this time, the spring releases its elastic force to push the insertion rod 21 to move along the slide groove 18. When one end of the insertion rod 21 is inserted into the slot 19, the connecting block 6 can be fixed. With the quick-release component, the connecting block 6 can be removed from the device when needed to avoid affecting the normal operation of medical staff. When it is necessary to fix the depth of the needle tube 1 inserted into the patient's body, the connecting block 6 can be installed on the side plate 5. The round tube 8 and round rod 9 on the connecting block 6 can limit its position, which is convenient for quick installation and removal. The top inner wall and bottom inner wall of the clearance port 17 are fixedly connected by bolts to the guide rod 23, and the guide rod 23 passes through the slide plate 20 and slides with it. The outer wall of the slide plate 20 located inside the slide port 16 is glued with a rubber sleeve 22, and the rubber sleeve 22 is provided with anti-slip texture.

[0024] To further secure the circular tube 8 and the circular rod 9, a fixing assembly includes a block 13 bolted to one end of the circular tube 8. The circular rod 9 passes through the block 13 and is slidably connected to it. A threaded hole 14 is provided on the upper surface of the block 13, and a locking knob 15 is threaded into the threaded hole 14. The bottom end of the locking knob 15 is in close contact with the bottom end of the circular rod 9. Since the damping between the circular tube 8 and the circular rod 9 cannot be guaranteed, to ensure stability, the locking knob 15 is rotated after the circular rod 9 completes its movement within the circular tube 8. The screw threaded connection between the screw thread 15 and the screw thread 14 on the block 13 causes the screw thread 15 to move downwards during rotation. When the bottom of the screw thread 15 is in close contact with the outer circumference of the round rod 9, the position between the round tube 8 and the round rod 9 can be fixed. After the round rod 9 moves inside the round tube 8, the arc-shaped baffle 12 on it comes into contact with the patient's skin. The screw thread 15 can then be used to further fix the position of the round rod 9, thereby preventing the round rod 9 from sliding inside the round tube 8 and further increasing the stability between the two.

[0025] The use of this utility model involves the following steps:

[0026] S1: After the needle tube 1 is inserted into the required position in the patient's body, the two connecting blocks 6 are installed on one side of the side plate 5 through the quick-release assembly. Then, the round rod 9 inside the sliding round tube 8 is rotated and moved towards the direction close to the patient's skin. When one side of the arc-shaped baffle 12 contacts the patient's skin, the depth of the needle tube 1 inserted into the patient's skin can be known. Then, the position of the round tube 8 and the round rod 9 is fixed by the fixing assembly.

[0027] S2: When it is necessary to install the connecting block 6 onto the device, first move the slide plate 20 in the slide 16 simultaneously. During the movement of the slide plate 20, it will drive the fixed rod 21 to move along the slide groove 18. During the movement, the spring is compressed to make it bear force. When one end of the rod 21 is completely disengaged from the slot 19, one side of the connecting block 6 can be inserted into the square groove 24 on one side of the side plate 5. After the connecting block 6 is completely inserted into the square groove 24, the slide plate 20 can be released. At this time, the spring releases its elastic force to push the rod 21 to move along the slide groove 18. When one end of the rod 21 is inserted into the slot 19, the connecting block 6 can be fixed.

[0028] S3: Since the damping between the round tube 8 and the round rod 9 cannot be guaranteed, in order to ensure the stability between the two, after the round rod 9 completes its movement inside the round tube 8, the locking knob 15 is rotated. Since the locking knob 15 is threadedly connected to the threaded hole 14 on the block 13, it will move downwards during the rotation of the locking knob 15. When the bottom end of the locking knob 15 is in close contact with the outer circumference of the round rod 9, the position between the round tube 8 and the round rod 9 can be fixed.

[0029] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0030] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A puncture needle with a limiting structure, comprising a needle tube (1) and a needle core (2), wherein the needle core (2) slides within the needle core (2), a needle seat a first (3) is bonded to one end of the needle tube (1), and a needle seat a second (4) is bonded to one end of the needle core (2), characterized in that: Both sides of the needle seat (3) are fixedly connected to side plates (5). A square groove (24) is opened on one side of each of the two side plates (5). A connecting block (6) is slidably connected in each of the two square grooves (24). A quick-release assembly is provided between the connecting block (6) and the square groove (24) to allow for quick installation and removal of the connecting block (6). A fixing block (7) is fixedly connected to the upper surface of each of the two connecting blocks (6). A round tube (8) is provided through the fixing blocks (7). A round rod (9) is slidably connected inside the tube (8). A fixing component is provided between the round tube (8) and the round rod (9) to fix the round rod (9). Both ends of the round rod (9) are fixedly connected to end blocks (10). A connecting plate (11) is fixedly connected to the outer circumference of the end block (10) near the needle tube (1). An arc-shaped baffle (12) is fixedly connected to one side of the connecting plate (11), and the arc surface of the arc-shaped baffle (12) contacts the outer circumference of the needle tube (1).

2. The puncture needle with a limiting structure according to claim 1, characterized in that: The quick-release assembly includes two sliding openings (16) on the connecting block (6). Each of the two sliding openings (16) has a clearance opening (17) on one side. Each of the two clearance openings (17) has a sliding plate (20) slidably connected inside. Each of the two clearance openings (17) has a sliding groove (18) on one side. Each of the two sliding grooves (18) passes through the upper and lower surfaces of the connecting block (6). Each of the sliding grooves (18) has a slidably connected insert rod (21). Each of the inner top and bottom walls of the square groove (24) has a slot (19). One end of the insert rod (21) is inserted into the slot (19).

3. A puncture needle with a limiting structure according to claim 2, characterized in that: A guide rod (23) is fixedly connected between the top inner wall and the bottom inner wall of the recess (17), and the guide rod (23) passes through the slide plate (20) and is slidably connected to it.

4. A puncture needle with a limiting structure according to claim 1, characterized in that: The fixing component includes a block (13) fixedly connected to one end of the round tube (8), the round rod (9) passes through the block (13) and is slidably connected to it, the upper surface of the block (13) is provided with a threaded hole (14), a locking knob (15) is threadedly connected to the threaded hole (14), and the bottom end of the locking knob (15) is in close contact with the bottom end of the round rod (9).

5. A puncture needle with a limiting structure according to claim 2, characterized in that: One end of the insertion rod (21) is fixedly connected to a spring, and the other end of the spring is fixed to one side of the inner wall of the slide groove (18).

6. A puncture needle with a limiting structure according to claim 2, characterized in that: A rubber sleeve (22) is bonded to the outer wall of the inner part of the slide (16) of the slide plate (20), and the rubber sleeve (22) has anti-slip texture.

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