Automatic impact needle puncture device

Abstract

An automatic impact needle puncture device includes a base, a mechanical motion positioning mechanism, a high-pressure air pump impact mechanism and a puncture needle assembly. The mechanical motion positioning mechanism includes a motor, a driving gear, and a rack part. The motor is fixedly mounted on the upper part of the base, and the motor output shaft drives the connected driving gear, which is engaged with the rack part. A slide rail is fixedly mounted on the base, and the rack part is fixedly mounted on a sliding sleeve. The sliding sleeve is sleeved on the outside of the slide rail and can move with the slide rail. Compared with the existing technology, the present invention abandons the defects of traditional manual puncture, and is equipped with dual driving forces of mechanical and high-pressure air pump impact. The mechanical movement plays a positioning role, and the high-pressure air pump impact plays a rapid puncture role. The effect is better than manual operation and simple mechanical motion needle insertion, can effectively solve the problem of needle insertion drift, accurately and efficiently complete the puncture process, reduce human dependence, and also reduce surgical risks and improve the success rate of surgery.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an automatic impact needle puncture device. Background Art

[0002] In the medical field, surgical needle insertion during soft tissue puncture biopsy and ablation procedures is generally performed manually by doctors. The process relies heavily on the personal experience of the operating doctor and is relatively physically demanding. Needle drift is a common problem in manual operations, especially when encountering hard tissue lumps. The manual needle insertion speed is relatively slow, the tissue displacement is easy to move, and it is more difficult for the needle to accurately reach the lesion location, which brings great risks to the operation and reduces the success rate of the operation to a certain extent. Summary of the Invention

[0003] In view of the above defects in the prior art, the present invention provides an automatic impact needle puncture device as follows:

[0004] The technical solution of the present invention is achieved as follows:

[0005] An automatic impact needle puncture device comprises a base, a mechanical motion positioning mechanism, a high-pressure air pump impact mechanism and a puncture needle assembly, the mechanical motion positioning mechanism comprises a motor, a driving gear, a rack part and a sliding sleeve, the motor is fixedly mounted on the upper part of the base, the motor output shaft drives the connected driving gear, the driving gear is meshed with the rack part, a slide rail is installed on the base, the rack part is fixedly mounted on the sliding sleeve, the sliding sleeve is arranged on the outside of the slide rail and can move with the slide rail, the rack part cooperates to connect the puncture needle assembly and the high-pressure air pump impact mechanism, the high-pressure air pump impact mechanism comprises a pneumatic drive unit, a pneumatic function activation button, and a force feedback receiving unit, the force feedback receiving unit is arranged at the upper end of the puncture needle, and the upper end of the puncture needle abuts the pneumatic drive unit, and the pneumatic function activation button controls the connection of the pneumatic drive unit.

[0006] Preferably, the puncture needle assembly includes a fixed base connected to the sliding sleeve, the fixed base is provided with a clamping seat, the clamping seat is connected to a clamping needle component, the clamping needle component includes left and right clamping jaws with adjustable lead, and a positioning guide needle assembly is also installed at the bottom of the fixed base. The clamping seat, left and right clamping jaws and positioning guide needle assembly constitute a puncture needle placement channel from top to bottom.

[0007] Preferably, the positioning guide needle assembly includes a guide base and a guide adapter ring, and the guide adapter ring is installed in the guide groove of the guide base.

[0008] Preferably, the pneumatic drive unit includes a shell, a pneumatic rotating shaft is provided inside the shell, the pneumatic rotating shaft is driven and connected to a pneumatic rotating block, a downward pressing moving block is provided below the pneumatic rotating block, the bottom of the downward pressing moving block abuts against the bottom of the shell through a compression spring, there is an impact gap between the bottom of the shell and the downward pressing moving block, an upper boss is provided on the upper part of the downward pressing moving block, a lower boss is provided on the lower part of the pneumatic rotating block which can press down the upper boss to drive the downward pressing moving block to move downward, a pushing connecting rod is provided at the lower part of the downward pressing moving block, and the pushing connecting rod abuts against the upper part of the puncture needle.

[0009] Preferably, an adjustment gear is provided on the outside of the shell, and the adjustment gear controls the connection push connecting rod.

[0010] Preferably, a downward guide shaft is further provided in the middle of the downward moving block.

[0011] Preferably, a driven gear assembly is further provided on the base, and the driven gear assembly includes a driven gear, a support shaft and two side walls. The driven gear is installed on the two side walls through the support shaft, and the driven gear is engaged with the rack part.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The automatic impact needle insertion and puncture device of the present invention has abandoned the defects of traditional manual puncture. At the same time, it is equipped with dual driving forces of mechanical and high-pressure air pump impact. Mechanical movement plays a positioning role, and high-pressure air pump impact plays a rapid puncture role. The effect is better than manual operation and simple mechanical movement needle insertion. It can effectively solve the problem of needle insertion drift, complete the puncture process accurately and efficiently, reduce human dependence, and also reduce surgical risks and improve the success rate of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the automatic impact needle puncture device of the present invention;

[0015] Figure 2 This is a front view of the automatic impact needle puncture device of the present invention;

[0016] Figure 3 A top view of the automatic impact needle puncture device of the present invention;

[0017] Figure 4 This is a left side view of the automatic impact needle puncture device of the present invention;

[0018] Figure 5 This is a diagram of the internal structure of the pneumatic drive unit of the present invention.

[0019] In the figure: base 100, slide rail 110, mechanical motion positioning mechanism 200, motor 210, driving gear 220, rack part 230, sliding sleeve 240, driven gear 251, support shaft 252, side wall 253, high-pressure air pump impact mechanism 300, pneumatic drive unit 310, shell 311, pneumatic rotating shaft 312, pneumatic rotating block 313, lower boss 3131, downward moving block 314, upper boss 3141, impact gap 315, compression spring 316, pushing connecting rod 317, adjusting gear 318, downward guide shaft 319, force feedback receiving unit 320, puncture needle assembly 400, puncture needle 410, fixed base 420, clamping seat 430, clamping needle component 440, left and right clamping jaws 450, positioning guide needle assembly 460, guide base 461, guide adapter ring 462. DETAILED DESCRIPTION

[0020] The present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] like Figures 1 to 5As shown, an automatic impact needle puncture device includes a base 100, a mechanical motion positioning mechanism 200, a high-pressure air pump impact mechanism 300 and a puncture needle assembly 400, wherein the mechanical motion positioning mechanism 200 includes a motor 210, a driving gear 220, a rack part 230 and a sliding sleeve 240, wherein the motor 210 is fixedly mounted on the upper part of the base 100, the output shaft of the motor 210 drives the driving gear 220, and the driving gear 220 is engaged with the rack 230, and a slide rail 110 is provided on the base 100, and the rack part 230 is fixedly mounted on the sliding sleeve 240, and the sliding sleeve 240 is sleeved on the outside of the slide rail 110 and can be moved with the rotation of the sliding sleeve 240. As the slide rail 110 moves, the rack part 230 cooperates to connect the puncture needle assembly 400 and the high-pressure air pump impact mechanism 300. When the rack 230 moves up and down along the slide rail 110, it drives the puncture needle assembly 400 and the high-pressure air pump impact mechanism 300 to move up and down together through the sliding sleeve 240. The high-pressure air pump impact mechanism 300 includes a pneumatic drive unit 310, a pneumatic function activation button, and a force feedback receiving unit 320. The force feedback receiving unit 320 is arranged at the upper end of the puncture needle 410, and the upper end of the puncture needle 410 abuts against the pneumatic drive unit 310. The pneumatic function activation button controls the connection of the pneumatic drive unit 310. The puncture needle assembly 400 includes a fixed base 420 connected to the sliding sleeve 240. The fixed base 420 is provided with a clamping seat 430. The clamping seat 430 is connected to the clamping needle component 440. The clamping needle component 440 includes left and right clamping jaws 450 with adjustable lead. A positioning guide needle assembly 460 is also installed at the bottom of the fixed base 420. The clamping seat 430, left and right clamping jaws 450, and positioning guide needle assembly 460 form a placement channel for the puncture needle 410 from top to bottom. The positioning guide needle assembly 460 includes a guide base 461 and a guide adapter ring 462. The guide adapter ring 462 is installed in the guide groove of the guide base 461. The pneumatic drive unit 310 includes a shell 311, and a pneumatic rotating shaft 312 is provided inside the shell 311. The pneumatic rotating shaft 312 is driven and connected to a pneumatic rotating block 313. A downward pressing moving block 314 is provided below the pneumatic rotating block 313. The bottom of the downward pressing moving block 314 abuts against the bottom of the shell 311 through a compression spring 316. There is an impact gap 315 between the bottom of the body 311 and the downward pressing moving block 314. The width of the impact gap 315 can be adjusted according to needs. An upper boss 3141 is provided on the upper part of the downward pressing moving block 314, and a lower boss 3131 is provided on the lower part of the pneumatic rotating block 313, which can press down the upper boss 3141 to drive the downward pressing moving block 314 to move downward. A pushing connecting rod 317 is provided on the lower part of the downward pressing moving block 314, and the pushing connecting rod 317 abuts against the upper part of the puncture needle 410.The outer side of the housing 311 is provided with an adjustment gear 318, which controls the connection push link 317. The adjustment gear 318 can adjust the downward distance of the push link 317 to match the impact puncture distance of the puncture needle 410. A downward guide shaft 319 is also provided in the middle of the downward moving block 314 to ensure that the upward and downward movement of the downward moving block 314 is stable. A driven gear assembly is also provided on the base 100, and the driven gear assembly includes a driven gear 251, a support shaft 252 and two side walls 253. The driven gear 251 is installed on the two side walls 253 through the support shaft 252. The driven gear 251 is meshed with the rack 230. The driven gear assembly shares the vertical force of the needle in the entire structure, increasing the smoothness of the movement.

[0022] Example

[0023] In this embodiment, the mechanical motion and high-pressure air pump impact motion are included. The motor 210 is mounted on the base 100. When the motor 210 rotates, the driving gear 220 drives the matching rack 230 to perform vertical linear motion. At the same time, the corresponding driven gear 251 also rotates synchronously.

[0024] The base 100 is provided with a slide rail 110 , and the rack 230 is fixedly connected to the sliding sleeve 240 . The rack 230 moves vertically up and down in the direction of the slide rail 110 .

[0025] The base 110 is rigidly fixed to the motor 210 and the slide rail 110 respectively, and the motor 210 mounting seat is designed with waist holes, which can be fine-tuned for installation.

[0026] The puncture needle assembly 400 is composed of a clamping needle component 440, a left clamping jaw, and a right clamping jaw. The clamping needle component 440 is fixedly installed with the sliding sleeve 240. The left clamping jaw and the right clamping jaw are respectively designed with a semicircular waist hole and an installation waist hole, which can adapt to needle diameters of 1-3mm respectively.

[0027] The positioning guide needle assembly 460 consists of a guide mounting seat 461 and a guide adapter ring 462. The guide adapter ring 462 cooperates with the guide mounting seat 461 through a mounting groove. For different needle types, guide adapter rings 462 with different apertures can be adapted. The motor 210 rotates, the rack 230 moves vertically, and the puncture needle 410, driven by the puncture needle assembly 400, moves down along the guide adapter ring 462 for puncture.

[0028] A pneumatic drive unit 315 is installed at the upper end of the puncture needle assembly 400, and a high-pressure air pump provides a power source. During the puncture needle assembly 400, when the feedback force reaches a certain set threshold, the force feedback receiving unit 320 is triggered, the pneumatic drive unit 315 is started, and the puncture needle assembly 400 cooperates with the motor 210 to accelerate downward movement, and can move downward by 1-5 mm (the width of the impact gap 315) in a very short time; the entire needle insertion process can control the impact movement in a band-like manner, and the impact frequency of the entire puncture process can be controlled according to actual conditions.

[0029] The force feedback receiving unit 320 installed in the puncture needle assembly 400 can dynamically adjust the timing of the impact triggering according to the force applied to the puncture needle 410. That is, when the feedback force applied to the puncture needle 410 reaches a certain threshold, the response trigger activates the high-pressure pneumatic impact, which, in conjunction with the rotation of the motor 210, changes the insertion speed and force of the puncture needle 410.

[0030] like Figure 5 As shown, the internal structure of the pneumatic drive unit 310, wherein the pneumatic rotating block 313 rotates around the pneumatic rotating shaft 312, and the downward pressing moving block 314 moves up and down in the vertical direction along the downward pressing guide shaft 319, and compresses the compression spring 316; the downward pressing moving block 314 is connected to the push connecting rod 317 through the adjustment gear 318, and when the downward pressing moving block 314 moves downward, the push connecting rod 317 moves downward synchronously, driving the needle to move, and completing the impact needle movement.

[0031] Furthermore, the needle insertion movement can be divided into two stages: Stage 1: The pneumatic rotating block 313 rotates around the pneumatic rotating shaft 312, and the initial static position is that the left side of the lower boss 3131 of the pneumatic rotating block 313 is in contact with the right side of the upper boss 3141 of the downward moving block 314, and the relative positions are maintained in the non-triggered state.

[0032] Furthermore, when the trigger instruction is activated, the pneumatic rotating block 313 rotates rapidly around the pneumatic rotating shaft 312. At the same time, the downward moving block 314 compresses the compression spring 316 along the downward guide shaft 319 and moves downward rapidly, and drives the pushing connecting rod 317 to move downward synchronously, driving the needle to move and complete the impact needle insertion.

[0033] Further, stage two: when the impact needle insertion action is completed, the pneumatic rotating block 313 returns to the initial position around the pneumatic rotating shaft 312, the downward pressing moving block 314 moves up to the initial position along the downward pressing guide shaft 319, the compression spring 316 returns to the initial position, and pushes the connecting rod 317 back to the initial position, completing a cycle of impact action.

[0034] The needle insertion distance is determined by the relative position of the adjustment gear 318 and the connecting push rod 317, and can be flexibly adjusted according to actual needs.

[0035] From the structure of the present invention, it can be seen that the automatic impact needle insertion and puncture device of the present invention has abandoned the defects of traditional manual puncture. At the same time, it is equipped with dual driving forces of mechanical and high-pressure air pump impact. Mechanical movement plays a positioning role, and high-pressure air pump impact plays a rapid puncture role. The effect is better than manual operation and simple mechanical movement needle insertion. It can effectively solve the problem of needle insertion drift, complete the puncture process accurately and efficiently, reduce human dependence, and also reduce surgical risks and improve the success rate of surgery.

Claims

1. An automatic impact needle puncture device, characterized in that: The invention comprises a base, a mechanical motion positioning mechanism, a high-pressure air pump impact mechanism and a puncture needle assembly, wherein the mechanical motion positioning mechanism comprises a motor, a driving gear, a rack part and a sliding sleeve, wherein the motor is fixedly mounted on the upper part of the base, the motor output shaft drives the connected driving gear, the driving gear is meshed with the rack part, a slide rail is mounted on the base, the rack part is fixedly mounted on the sliding sleeve, the sliding sleeve is sleeved on the outside of the slide rail and can move with the slide rail, the rack part cooperates to connect the puncture needle assembly and the high-pressure air pump impact mechanism, the high-pressure air pump impact mechanism comprises a pneumatic drive unit, a pneumatic function activation button and a force feedback receiving unit, the force feedback receiving unit is arranged at the upper end of the puncture needle, and the upper end of the puncture needle abuts against the pneumatic drive unit, and the pneumatic function activation button controls the connection of the pneumatic drive unit; The pneumatic drive unit includes a shell, a pneumatic rotating shaft is provided inside the shell, and the pneumatic rotating shaft is driven and connected to a pneumatic rotating block, a downward pressing moving block is provided below the pneumatic rotating block, the bottom of the downward pressing moving block abuts against the bottom of the shell through a compression spring, and there is an impact gap between the bottom of the shell and the downward pressing moving block, an upper boss is provided on the upper part of the downward pressing moving block, and a lower boss is provided on the lower part of the pneumatic rotating block which can press down the upper boss to drive the downward pressing moving block to move downward, and a pushing connecting rod is provided at the lower part of the downward pressing moving block, and the pushing connecting rod abuts against the upper part of the puncture needle.

2. The automatic impact needle puncture device according to claim 1, characterized in that: The puncture needle assembly includes a fixed base connected to the sliding sleeve, the fixed base is provided with a clamping seat, the clamping seat is connected to a clamping needle component, the clamping needle component includes left and right clamping jaws with adjustable lead, and a positioning guide needle assembly is also installed at the bottom of the fixed base. The clamping seat, left and right clamping jaws and positioning guide needle assembly constitute a puncture needle placement channel from top to bottom.

3. The automatic impact needle puncture device according to claim 2, characterized in that: The positioning guide needle assembly includes a guide base and a guide adapter ring, and the guide adapter ring is installed in the guide groove of the guide base.

4. The automatic impact needle puncture device according to claim 3, characterized in that: An adjustment gear is provided on the outer side of the shell, and the adjustment gear controls the connection and pushes the connecting rod.

5. The automatic impact needle puncture device according to claim 3 or 4, characterized in that: A downward guide shaft is also provided in the middle of the downward moving block.

6. The automatic impact needle puncture device according to claim 4, characterized in that: The base is also provided with a driven gear assembly, which includes a driven gear, a support shaft and two side walls. The driven gear is installed on the two side walls through the support shaft, and the driven gear is meshed with the rack part.

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