A puncture device

Abstract

This invention provides a puncture device, including an angle rotator, a fixator, and a position rotator. The angle rotator has multiple mounting holes on its outer periphery, which limit and fix the head of the puncture needle. The fixator is rotatably connected to the angle rotator and has multiple guide slots, each corresponding to one of the mounting holes. The position rotator is rotatably connected to the fixator and has multiple through holes, each corresponding to one of the guide slots, for the needle portion of the puncture needle to pass through. This allows for the adjustment of the puncture angle and fixation of the puncture position before puncture, guided by medical imaging technology, thus achieving control over the puncture entry point and angle.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a puncture device. Summary of the Invention

[0002] The purpose of this invention is to address the shortcomings of existing technologies by providing a puncture device with a component that facilitates adjustment of the puncture angle. This device can be adjusted and fixed in place before puncture using medical imaging technology, enabling control over the puncture point and angle. This avoids adverse effects on the patient due to human factors such as the doctor's lack of skill during the puncture process, greatly improving puncture efficiency and reducing unnecessary puncture damage.

[0003] To achieve the above objectives, the present invention provides the following technical solution:

[0004] A puncture device, comprising:

[0005] An angle rotator, wherein the outer periphery of the angle rotator is provided with multiple mounting holes, the mounting holes limiting and fixing the head of the puncture needle;

[0006] A fastener is connected to the angle rotator in a relative rotational manner. The fastener has multiple guide slots, and each guide slot corresponds to a mounting hole.

[0007] A position rotator is connected to the fixer in a relative rotational manner. The position rotator has multiple through holes, which correspond one-to-one with the guide slot holes, for the needle part of the puncture needle to pass through.

[0008] In a preferred embodiment, the angle rotator includes:

[0009] device body;

[0010] Multiple needle-holding claws are provided, with the proximal end of each claw connected to the device body and the distal end of each claw having a mounting hole.

[0011] In a preferred embodiment, the distal end of the needle-holding claw has a notch that connects the interior and exterior of the mounting hole.

[0012] As a preferred embodiment, it also includes:

[0013] A damping pin passes through the device body and is screwed to the retainer.

[0014] In a preferred embodiment, the damping pin includes:

[0015] A damping threaded section, wherein the damping threaded section is screwed to the retainer;

[0016] The damping sliding section is covered by the device body.

[0017] As a preferred embodiment, it also includes:

[0018] An anti-slip post is located between the damping sliding section of the damping pin and the device body.

[0019] In a preferred embodiment, the fixator includes:

[0020] A fixed plate, wherein a guide groove hole is provided on the fixed plate, and the outer side of the fixed plate is connected to the angle rotator;

[0021] A connecting post is connected to the inner side of the fixed plate and the position rotator.

[0022] In a preferred embodiment, the guide slot is arc-shaped, and the size of the guide slot gradually decreases from the outer side to the inner side of the fixed plate.

[0023] In a preferred embodiment, a fixing pin is further included, the fixing pin comprising:

[0024] A fixed threaded section is screwed to the retainer;

[0025] A fixed sliding section is provided, and the position rotator is fitted over the fixed sliding section.

[0026] In a preferred embodiment, the damping nail, the fixator, and the fixing nail are all hollow structures for the puncture needle to pass through, and the head of the puncture needle can be confined in the damping nail.

[0027] Compared with existing technologies, this technical solution has the following advantages:

[0028] Rotating the angle rotator or the position rotator relative to the fixator adjusts the tilt angle of the puncture needle. In other words, the puncture angle and position of the puncture needle can be adjusted through the cooperation of the angle rotator and the position rotator, significantly improving the success rate of the surgery while shortening the operation time and recovery period. This method has been widely adopted. It also avoids adverse effects on the patient due to human factors such as the doctor's lack of skill during the puncture process.

[0029] The system allows for the insertion of additional needles after initial puncture, enabling the use of fewer needles. If a vein is not found during initial puncture, an angle rotator can be used to adjust the angle before inserting a replacement needle. Since the already inserted needle has not been removed, adding more needles will only puncture areas that have not been reached, thus improving the success rate.

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0031] Figure 1 This is an exploded view of the puncture device described in this invention;

[0032] Figure 2 This is a schematic diagram of the puncture device described in this invention;

[0033] Figure 3 This is a schematic diagram of the assembly of the angle rotator, the fixer, and the position rotator described in this invention;

[0034] Figure 4 for Figure 3 Enlarged diagram of A in the middle;

[0035] Figure 5 This is a schematic diagram of the structure of the fixator described in this invention;

[0036] Figure 6 This is a cross-sectional view of the fixator described in this invention;

[0037] Figure 7 for Figure 6 Enlarged diagram of B in the diagram;

[0038] Figure 8 and Figure 9 This is a diagram illustrating the use of the puncture device described in this invention. Detailed Implementation

[0039] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0040] like Figure 1 and Figure 2 As shown, the puncture device includes:

[0041] An angle rotator 100 has multiple mounting holes 100a on its outer periphery, and the mounting holes 100a are used to limit the head 710 of the puncture needle 700.

[0042] Fixture 200, which is rotatably connected to the angle rotator 100, and the fixture 200 is provided with a plurality of guide slot holes 200a, which correspond one-to-one with the mounting holes 100a;

[0043] The position rotator 300 is rotatably connected to the fixer 200. The position rotator 300 has a plurality of through holes 300a, which correspond one-to-one with the guide slot holes 200a, so that the needle part 720 of the puncture needle 700 can pass through.

[0044] The number of mounting holes 100a, guide slot holes 200a, and through holes 300a are equal and correspond one-to-one. Each set of mounting holes 100a, guide slot holes 200a, and through holes 300a is used for one puncture needle 700 to pass through. The puncture needle 700 includes a head 710 and a needle portion 720 that are connected. The needle portion 720 of the puncture needle 700 passes through the mounting holes 100a, guide slot holes 200a, and through holes 300a in sequence until the head 710 of the puncture needle 700 is limited to the mounting hole 100 of the angle rotator 100. In 0a, since the angle rotator 100 and the position rotator 300 are respectively rotatably connected to the fixator 200, the angle rotator 100 or the position rotator 300 can be rotated relative to the fixator 200 to adjust the tilt angle of the puncture needle 700. That is, through the cooperation of the angle rotator 100 and the position rotator 300, the puncture angle and puncture position of the puncture needle 700 can be adjusted, which can greatly improve the success rate of the surgery, while shortening the operation time and recovery period, and has been widely used. This also avoids adverse effects on the patient due to human factors such as the doctor's lack of skill during the puncture process.

[0045] like Figures 1 to 3 As shown, the angle rotator 100 includes:

[0046] Device body 110;

[0047] Multiple needle-holding claws 120 are provided, with the proximal end of each needle-holding claw 120 connected to the device body 110 and the distal end of each needle-holding claw 120 having a mounting hole 100a.

[0048] The bottom surface of the device body 110 is flush with the bottom surface of the needle-holding claw 120 and rotates with the outer surface of the fixing plate 210. The device body 110 is cylindrical, and the height of the needle-holding claw 120 gradually decreases from the proximal end to the distal end. The needle-holding claw 120 is thin, reducing the amount used and lowering costs, while ensuring the positioning effect of the puncture needle 700. Each needle-holding claw 120 has a mounting hole 100a at its distal end for holding the head 710 of the puncture needle 700. The mounting hole 100a may be circular.

[0049] In this embodiment, there are four needle-holding claws 120, which are equidistantly spaced along the circumference of the device body 110.

[0050] refer to Figure 4 The distal top surface of the needle-holding claw 120 is flat, and the head 710 of the puncture needle 700 is confined within the mounting hole 100a at the distal end of the needle-holding claw 120. The head 710 of the puncture needle 700 is composed of several segments of plastic cylinders with different outer diameters, at least partially engaging with the mounting hole 100a, and also abutting against the distal top surface of the needle-holding claw 120. When the angle rotator 100 rotates relative to the retainer 200, it restricts the axial movement of the puncture needle 700.

[0051] Continue to refer to Figure 4 The distal end of the needle-holding claw 120 has a notch 100b, which connects the inside and outside of the mounting hole 100a. The notch 100b and the mounting hole 100a simultaneously restrict the head 710 of the puncture needle 700. The notch 100b allows for small-angle swaying of the puncture needle 700. The size of the notch 100b is much smaller than the diameter of the mounting hole 100a. When the notch 100b is subjected to radial force, it will open, allowing for small-angle swaying of the puncture needle 700.

[0052] like Figure 1 and Figure 5 As shown, the fastener 200 includes:

[0053] A fixed disk 210 is provided with a guide groove hole 200a, and the outer side of the fixed disk 210 is connected to the angle rotator 100.

[0054] A connecting post 220 is connected to the inner side of the fixed plate 210 and the position rotator 300.

[0055] The length of the connecting post 220 determines the distance between the fixed plate 210 and the position rotator 300, thereby ensuring that the needle portion 720 of the puncture needle 700 is limited to different positions. The diameter of the connecting post 220 is smaller than the diameter of the fixed plate 210, allowing the puncture needle 700 to be arranged around the connecting post 220.

[0056] refer to Figure 3 and Figure 5 The guide slot 200a penetrates the outer and inner sides of the fixed plate 210. The number of guide slots 200a is equal to the number of mounting holes 100a and they correspond one-to-one. That is, the head 710 of the puncture needle 700 is limited behind the mounting hole 100a, and the needle part 720 of the puncture needle 700 passes through the guide slot 200a corresponding to the mounting hole 100a.

[0057] The guide slot 200a is arc-shaped, and its arc length determines the tilt angle of the puncture needle 700. The guide slot 200a has two ends, and the puncture needle 700 is initially positioned between these two ends. By rotating the angle rotator 100 in both directions, the puncture needle 700 can be moved towards each of the two ends. (Reference) Figure 8 and Figure 9 The needle portion 720 of the puncture needle 700 passes through the mounting hole 100a, the guide groove hole 200a, and the through hole 300a in sequence until the head 710 of the puncture needle 700 is limited to the mounting hole 100a. At this time, the user can apply force to the angle rotator 100 to make the angle rotator 100 rotate relative to the fixer 200. The position where the puncture needle 700 contacts the guide groove hole 200a rotates relative to the position where the puncture needle 700 contacts the position rotator 300, so that the puncture needle 700 tilts. Therefore, by controlling the amount and direction of rotation of the angle rotator 100, the tilt angle and direction of the puncture needle 700 can be adjusted.

[0058] refer to Figure 6 and Figure 7 As shown, the size of the guide slot hole 200a gradually decreases from the outer side to the inner side of the fixed plate 210, that is, the guide slot hole 200a is in the shape of a trumpet, which further prevents the head 710 of the puncture needle 700 from detaching and causing the puncture needle 700 to move axially.

[0059] like Figure 1 As shown, the position rotator 300 is disc-shaped, and the perforation 300a of the position rotator 300 can be circular for the needle portion 720 of the puncture needle 700 to pass through.

[0060] The diameters of the position rotator 300 and the fixed disk 210 are approximately equal, while the diameter of the connecting post 220 is much smaller than that of the fixed disk 210. Therefore, after the position rotator 300, the fixed disk 210 and the connecting post 220 are assembled, the whole structure is in the shape of a dumbbell.

[0061] like Figures 1 to 3 As shown, the puncture device further includes:

[0062] A damping pin 400 passes through the device body 110 and is screwed to the fixing device 200.

[0063] The damping pin 400 includes a damping threaded section 410 and a damping sliding section 420 connected to each other. The damping threaded section 410 is screwed to the fixing device 200. The device body 110 is sleeved on the damping sliding section 420. It can be seen that the damping pin 400 is fixed on the fixing device 200, and the angle rotator 100 rotates relative to the damping sliding section 420 of the damping pin 400, that is, the angle rotator 100 rotates relative to the fixing device 200.

[0064] Specifically, the center of the body 110 of the angle rotator 100 is aligned with the center of the fixed disk 210, so that the damping pin 400 passes through the center of the body 110 and is screwed to the center of the fixed disk 210. The body 110 has a hole through which the damping pin 400 passes, and the center of the damping pin 400 has a threaded hole for screwing the damping pin 400.

[0065] In a preferred embodiment, the puncture device further includes an anti-slip post 500, which is located between the damping sliding section 420 of the damping pin 400 and the device body 110. That is, the damping pin 400 passes through the anti-slip post 500, connects to the angle rotator 100, and is screwed onto the fixing plate 210 of the fixer 200. Rotating the angle rotator 100 causes rotational damping, allowing for arbitrary rotation and arbitrary stopping. The inner surface of the anti-slip post 500 is smooth to engage with the damping sliding section 420 of the damping pin 400, while the outer surface of the anti-slip post 500 is rough to engage with the holes in the device body 110. The inner wall of the holes in the device body 110 is also rough, achieving a damping engagement between the two.

[0066] refer to Figure 1 The damping pin 400 also includes a damping head 430, and the damping sliding section 420 is connected between the damping head 430 and the damping threaded section 410. The diameter of the damping head 430 is larger than the diameter of the damping sliding section 420, so the damping head 430 can abut against the end face of the anti-slip post 500.

[0067] like Figure 1 As shown, the puncture device further includes a fixing pin 600, the fixing pin 600 comprising the following connected components:

[0068] A fixed threaded section 620 is screwed to the retainer 200;

[0069] A fixed sliding section 610 is provided, and the position rotator 300 is fitted over the fixed sliding section 610.

[0070] The fixed threaded section 620 passes through the position rotator 300 and is screwed to the connecting post 220 of the fixture 200. The position rotator 300 is sleeved on the outside of the fixed sliding section 610. The position rotator 300 can rotate relative to the fixing pin 600, that is, the position rotator 300 can rotate relative to the fixture 200.

[0071] The diameter of the fixed sliding section 610 is larger than the diameter of the fixed threaded section 620, so that the fixed sliding section 610 can abut against the end of the connecting post 220. The fixing pin 600 also includes a fixing head 630, and the fixed sliding section 610 is connected between the fixing head 630 and the fixed threaded section 620. The diameter of the fixing head 630 is larger than the diameter of the fixed sliding section 610, so that the fixing head 630 can abut against the position rotator 300.

[0072] like Figure 2 and Figure 6 As shown, the damping pin 400, the retainer 200, and the fixing pin 600 are all hollow structures and interconnected for the puncture needle 700 to pass through, and the head 710 of the puncture needle 700 can be confined within the damping pin 400. The puncture needle 700, inserted into the hollow structures of the damping pin 400, the retainer 200, and the fixing pin 600, corresponds to the central puncture needle.

[0073] The position rotator 300 can be made of materials such as metal, nylon, or silicone. The angle rotator 100 and the retainer 200 can be made of materials such as metal or nylon. The puncture needle 700 can be a syringe needle of various specifications.

[0074] refer to Figure 8 and Figure 9 The puncture device described in this embodiment can be used as a single or multiple puncture needles 700, and its working principle is as follows:

[0075] The corresponding mounting hole 100a, guide groove hole 200a and through hole 300a, and / or the hollow structure of the damping nail 400, the fixer 200 and the fixing nail 600 are selected as the insertion of the puncture needle 700;

[0076] Rotating the angle rotator 100 tilts the puncture needle 700, thereby adjusting its puncture angle. Rotating the position rotator 300 causes the position where the puncture needle 700 contacts the position rotator 300 to rotate relative to the position where the puncture needle 700 contacts the guide slot 200a, thus adjusting the puncture angle. Therefore, by cooperating with the angle rotator 100 and the position rotator 300, the puncture angle and puncture position of the puncture needle 700 can be adjusted.

[0077] After the puncture needle 700 is inserted into the tissue, it can be slightly retracted, and the angle rotator 100 can be adjusted individually to change the angle of the puncture needle 700 for further puncture of the rotating vein. Observe the blood collection of the puncture needle 700, locate the puncture needle that has reached the target vein based on the blood collection, place the guide wire, and withdraw the trocar.

[0078] The system allows for subsequent insertion of additional puncture needles (700). If a vein is not found during puncture, the angle can be adjusted using the angle rotator (100) before inserting another puncture needle (700). Since the already inserted puncture needle (700) has not been removed, adding more needles (700) ensures that the needle will only puncture areas that were previously missed, improving the success rate. In contrast, the traditional single-needle puncture method often results in repeated punctures at almost the same location.

[0079] In summary, the puncture device of this embodiment includes an angle rotator 100 for adjusting the puncture angle and a position rotator 300, which can adjust the puncture angle and fix the puncture position before puncture with CT guidance, thereby controlling the puncture point and angle. This avoids adverse effects on the patient due to human factors such as the doctor's lack of skill during the puncture process. This device can greatly improve puncture efficiency and reduce unnecessary puncture damage. The puncture device of this embodiment is used to guide physicians in percutaneous puncture operations to ensure accurate subcutaneous puncture. It is usually used under ultrasound or CT guidance. Through imaging technology and computer algorithms, it can help physicians clarify the puncture position and direction during surgery, thereby reducing the risk of complications during surgery. The percutaneous puncture angle locator can greatly improve the success rate of surgery, while shortening the operation time and recovery period, and has been widely used. The puncture device of this embodiment can perform multiple punctures simultaneously, improving puncture efficiency. This trocar allows for free adjustment of the puncture needle position and angle, and the number of puncture needles can be selected. If the target is not hit, the puncture angle can be further adjusted, or the number of puncture needles can be gradually increased. After the puncture needle reaches the femoral vein, the needle that hit the target is determined based on the blood sampling results. A guide wire can then be placed, and the trocar can be withdrawn. This device can greatly improve puncture efficiency and reduce unnecessary puncture damage. This device is not limited to puncturing other blood vessels.

[0080] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A puncture device, characterized in that, include: An angle rotator (100) has multiple mounting holes (100a) on its outer periphery, and the mounting holes (100a) limit and fix the head (710) of the puncture needle (700). Fixture (200), which is connected to the angle rotator (100) in a relative rotational manner, wherein the fixture (200) is provided with a plurality of guide slot holes (200a), and the guide slot holes (200a) correspond one-to-one with the mounting holes (100a); A position rotator (300) is connected to a retainer (200) for relative rotation. The position rotator (300) has a plurality of through holes (300a) that correspond one-to-one with the guide slot holes (200a) for the needle part (720) of the puncture needle (700) to pass through. The guide slot hole (200a) is arc-shaped; When the angle rotator (100) rotates relative to the fixture (200), it can drive the head of the puncture needle (700) to move and cause the needle part of the puncture needle (700) to move in the corresponding guide groove hole (200a) to adjust the puncture angle of multiple puncture needles (700).

2. The puncture device as described in claim 1, characterized in that, The angle rotator (100) includes: The device body (110); Multiple needle-holding claws (120) are provided, with the proximal end of each claw (120) connected to the device body (110) and the distal end of each claw (120) having a mounting hole (100a).

3. The puncture device as described in claim 2, characterized in that, The distal end of the needle-holding claw (120) has a notch (100b) that connects the interior and exterior of the mounting hole (100a).

4. The puncture device as described in claim 2, characterized in that, Also includes: A damping pin (400) passes through the device body (110) and is screwed to the retainer (200).

5. The puncture device as described in claim 4, characterized in that, The damping pin (400) includes: Damping threaded section (410), the damping threaded section (410) is screwed to the retainer (200); The damping sliding section (420) is covered by the device body (110).

6. The puncture device as described in claim 5, characterized in that, Also includes: Anti-slip post (500) is located between the damping sliding section (420) of the damping pin (400) and the device body (110).

7. The puncture device as described in claim 1, characterized in that, The fastener (200) includes: A fixed disk (210) is provided with a guide slot hole (200a), and the outer side of the fixed disk (210) is connected to the angle rotator (100); A connecting post (220) is connected to the inner side of the fixed plate (210) and the position rotator (300).

8. The puncture device as described in claim 7, characterized in that, The guide slot (200a) is arc-shaped, and the size of the guide slot (200a) gradually decreases from the outer side to the inner side of the fixed plate (210).

9. The puncture device as described in claim 4, characterized in that, It also includes a fixing pin (600), said fixing pin (600) comprising: A fixed threaded section (620) is screwed to the retainer (200); A fixed sliding section (610) is fitted with the position rotator (300).

10. The puncture device as described in claim 9, characterized in that, The damping pin (400), the retainer (200) and the fixing pin (600) are all hollow structures for the puncture needle (700) to pass through, and the head (710) of the puncture needle (700) can be confined in the damping pin (400).

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