Puncture outfit

Abstract

The invention provides a puncture outfit which comprises an angle rotator, a fixator and a position rotator, a plurality of mounting holes are formed in the periphery of the angle rotator, and the mounting holes limit and fix the head of a puncture needle; the fixator is connected with the angle rotator in a relative rotation mode, a plurality of guide groove holes are formed in the fixator, and the guide groove holes correspond to the mounting holes one to one; the position rotator is connected with the fixator in a relative rotation mode, a plurality of penetrating holes are formed in the position rotator, the penetrating holes correspond to the guide groove holes in a one-to-one mode so that the needle portion of a puncture needle can penetrate through the penetrating holes, and the puncture angle can be well adjusted and the puncture position can be well fixed in cooperation with the medical imaging technology before puncture. And the control on a puncture needle inserting point and a needle inserting angle is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a puncture device. Technical Field

[0003] A trocar is a medical device used for puncture sampling or injection. Its main function is to pass a needle through the skin and soft tissue to take tissue samples, inject drugs, drain intravenous fluid or perform other therapeutic operations. It has a wide range of uses and can be used in a variety of medical procedures, including but not limited to obtaining tissue samples for pathological examination, draining intravenous fluid, etc.

[0004] In interventional surgeries or animal experiments via the femoral vein, catheters or other medical devices are delivered into the heart or peripheral blood vessels using a puncture device through the femoral vein for diagnostic or therapeutic operations. Traditionally, a single puncture needle is used to puncture and find the femoral vein under the guidance of medical imaging technology. However, the femoral vein has lower blood pressure, thicker muscles (such as pigs in animal experiments), and deeper veins. It is difficult to accurately puncture the femoral vein even with multiple punctures during surgery.

[0005] At present, percutaneous lung puncture has been widely used in clinical practice. In most cases, after precise positioning by CT (Computed Tomography), vertical needle insertion is often used for puncture. However, there are still many cases that require oblique needle puncture. Such cases often rely on the physician's operating experience, and often require repeated attempts to locate before successful puncture. This will inevitably increase the operation time, the number of radiation exposures, and the incidence of pneumothorax / hemoptysis. Of course, other percutaneous puncture operations may also encounter situations where oblique needle insertion is required, and there are also problems such as prolonged operation time and additional harm to patients due to inaccurate puncture angles. Summary of the invention

[0006] The purpose of the present invention is to address the deficiencies in the prior art and provide a puncture device with a component that is convenient for adjusting the puncture angle. The puncture angle can be adjusted and the puncture position can be fixed before puncture, so as to control the puncture point and the angle of the needle, avoid adverse effects on the patient due to human factors such as the doctor's unskilled operation during the puncture process, greatly improve the puncture efficiency, and reduce unnecessary puncture injuries.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A trocar, comprising:

[0009] An angle rotator, wherein a plurality of mounting holes are provided on the outer periphery of the angle rotator, and the mounting holes are used to position and fix the head of the puncture needle;

[0010] A fixer, the fixer is connected to the angle rotator for relative rotation, the fixer is provided with a plurality of guide slot holes, and the guide slot holes correspond to the mounting holes one by one;

[0011] A position rotator is connected to a fixer for relative rotation. A plurality of through holes are provided on the position rotator, and the through holes correspond to the guide slot holes one by one for the needle portion of the puncture needle to pass through.

[0012] As a preferred embodiment, the angle rotator comprises:

[0013] device body;

[0014] A plurality of needle holding claws, wherein the proximal end of the needle holding claw is connected to the device body, and the distal end of the needle holding claw is provided with a mounting hole.

[0015] As a preferred embodiment, a notch is provided at the distal end of the needle gripper, and the notch connects the inside and the outside of the mounting hole.

[0016] As a preferred embodiment, it also includes:

[0017] A damping nail is passed through the device body and is threadedly connected with the fixer.

[0018] As a preferred embodiment, the damping nail comprises:

[0019] a damping thread section, wherein the damping thread section is threadedly connected to the fixer;

[0020] A damping sliding section is provided with the device body on its outer sleeve.

[0021] As a preferred embodiment, it also includes:

[0022] An anti-skid column is located between the damping sliding section of the damping nail and the device body.

[0023] As a preferred embodiment, the fixator comprises:

[0024] A fixed plate, wherein a guide slot hole is formed on the fixed plate, and an outer side surface of the fixed plate is connected to the angle rotator;

[0025] A connecting post is connected to the inner side surface of the fixing disk and the position rotator.

[0026] As a preferred embodiment, the guide slot hole is arc-shaped, and the size of the guide slot hole gradually decreases from the outer side surface to the inner side surface of the fixing plate.

[0027] As a preferred embodiment, it further comprises a fixing nail, wherein the fixing nail comprises:

[0028] A fixed threaded section, the fixed threaded section being threadedly connected to the fixture;

[0029] A fixed sliding section is provided with the position rotator on its outer shell.

[0030] As a preferred embodiment, the damping pin, the fixer and the fixing pin are all hollow structures for the puncture needle to pass through, and the head of the puncture needle can be limited by the damping pin.

[0031] Compared with the prior art, this technical solution has the following advantages:

[0032] The angle rotator or the position rotator is rotated to rotate relative to the fixator, thereby adjusting the tilt angle of the puncture needle, that is, the puncture angle and puncture position of the puncture needle can be adjusted through the cooperation of the angle rotator and the position rotator, which can greatly improve the success rate of the operation, shorten the operation time and recovery period, and has been widely used. It avoids adverse effects on patients caused by human factors such as unskilled operation of doctors during the puncture process.

[0033] The puncture needle can be supplemented after puncture, and fewer puncture needles can be installed. When the blood vessel is not found during puncture, the angle can be adjusted with the angle rotator to add a puncture needle. Since the inserted puncture needle has not been removed, when adding a puncture needle, only the position that has not been punctured will be punctured, which improves the hit rate.

[0034] The present invention is further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is an exploded view of the trocar of the present invention;

[0036] Figure 2 It is a schematic diagram of the structure of the trocar of the present invention;

[0037] Figure 3 It is a schematic diagram of assembling the angle rotator, the fixer and the position rotator of the present invention;

[0038] Figure 4 for Figure 3 A is an enlarged schematic diagram;

[0039] Figure 5 is a schematic diagram of the structure of the fixer of the present invention;

[0040] Figure 6 is a cross-sectional view of the fixing device of the present invention;

[0041] Figure 7 for Figure 6 A magnified schematic diagram of B;

[0042] Figure 8 and Fig. 9 This is a diagram showing the use of the trocar described in the present invention. DETAILED DESCRIPTION

[0043] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0044] like Figure 1 and Figure 2 As shown, the puncture device comprises:

[0045] An angle rotator 100, wherein a plurality of mounting holes 100a are formed on the outer periphery of the angle rotator 100, and the mounting holes 100a are used to limit the head 710 of the puncture needle 700;

[0046] A fixture 200, wherein the fixture 200 is connected to the angle rotator 100 for relative rotation, and the fixture 200 is provided with a plurality of guide slot holes 200a, and the guide slot holes 200a correspond to the mounting holes 100a one by one;

[0047] The position rotator 300 is connected to the fixer 200 for relative rotation. The position rotator 300 is provided with a plurality of through holes 300a, and the through holes 300a correspond one-to-one with the guide slot holes 200a for the needle portion 720 of the puncture needle 700 to pass through.

[0048] The number of the mounting holes 100a, the guide slot holes 200a and the through holes 300a is equal and corresponds to each other. Each group of the corresponding mounting holes 100a, the guide slot holes 200a and the through holes 300a is used for one of the puncture needles 700 to pass through, wherein the puncture needle 700 includes a head 710 and a needle portion 720 connected to each other, and the needle portion 720 of the puncture needle 700 passes through the mounting hole 100a, the guide slot hole 200a and the through hole 300a in sequence until the head 710 of the puncture needle 700 is limited in the mounting hole 100 of the angle rotator 100. 0a, since the angle rotator 100 and the position rotator 300 are respectively connected to the fixture 200 for relative rotation, the angle rotator 100 or the position rotator 300 can be rotated to rotate relative to the fixture 200, thereby adjusting the inclination 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 operation, shorten the operation time and recovery period, and has been widely used. Avoid adverse effects on patients due to human factors such as unskilled operation of doctors during the puncture process.

[0049] like Figures 1 to 3 As shown, the angle rotator 100 comprises:

[0050] Device body 110;

[0051] A plurality of needle holding claws 120 are provided, wherein the proximal end of the needle holding claw 120 is connected to the device body 110 , and the distal end of the needle holding claw 120 is provided with a mounting hole 100 a .

[0052] The bottom surface of the device body 110 is flush with the bottom surface of the needle holding claw 120, and is rotatably matched with the outer surface of the fixed disk 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 of the needle holding claw 120. The thickness of the needle holding claw 120 is relatively thin, which reduces the amount and cost, while ensuring the positioning effect of the puncture needle 700. A mounting hole 100a is respectively opened at the distal end of each of the needle holding claws 120 for clamping the head 710 of the puncture needle 700, and the mounting hole 100a can be circular.

[0053] In this embodiment, the number of the needle holding claws 120 is four, and they are arranged at equal intervals along the circumference of the device body 110.

[0054] refer to Figure 4The distal top surface of the needle holding claw 120 is a plane, and the head 710 of the puncture needle 700 is limited in the mounting hole 100a at the distal end of the needle holding claw 120. The head 710 of the puncture needle 700 is a plurality of sections of plastic cylinders with different outer diameters, which at least partially cooperate with the mounting hole 100a and can also abut against the distal top surface of the needle holding claw 120, and when the angle rotator 100 rotates relative to the fixer 200, the axial movement of the puncture needle 700 can be limited.

[0055] Continue to refer Figure 4 The distal end of the needle gripper 120 is provided with a notch 100b, the notch 100b 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, and the notch 100b is used to achieve a small angle swing of the puncture needle 700. The size of the notch 100b is much smaller than the diameter of the mounting hole 100a, and the notch 100b will open when subjected to radial force, thereby achieving a small angle swing of the puncture needle 700.

[0056] like Figure 1 and Figure 5 As shown, the fixture 200 comprises:

[0057] A fixed plate 210, wherein a guide slot hole 200a is formed on the fixed plate 210, and an outer side surface of the fixed plate 210 is connected to the angle rotator 100;

[0058] The connecting post 220 is connected to the inner side surface of the fixing plate 210 and the position rotator 300 .

[0059] The length of the connecting column 220 determines the distance between the fixing disk 210 and the position rotator 300 to ensure that the needle portion 720 of the puncture needle 700 is limited at different positions. The diameter of the connecting column 220 is smaller than the diameter of the fixing disk 210, so that the puncture needle 700 can be arranged around the connecting column 220.

[0060] refer to Figure 3 and Figure 5 The guide slot hole 200a passes through the outer side and the inner side of the fixing plate 210, and the number of the guide slot holes 200a is equal to the number of the mounting holes 100a, and they correspond one to one, that is, after the head 710 of the puncture needle 700 is limited in the mounting hole 100a, the needle part 720 of the puncture needle 700 is inserted into the guide slot hole 200a corresponding to the mounting hole 100a.

[0061] The guide slot hole 200a is arc-shaped, and the arc length of the guide slot hole 200a determines the tilt angle of the puncture needle 700, wherein the guide slot hole 200a has two ends, and the puncture needle 700 is initially located between the two ends of the guide slot hole 200a. At this time, by rotating the angle rotator 100 forward and reversely, the puncture needle 700 can be moved to the two ends respectively. Figure 8 and Fig. 9 After the needle portion 720 of the puncture needle 700 penetrates the mounting hole 100a, the guide slot hole 200a, and the perforation 300a in sequence, until the head 710 of the puncture needle 700 is limited in the mounting hole 100a, the user can act on the angle rotator 100 to rotate the angle rotator 100 relative to the fixer 200, and the position where the puncture needle 700 contacts the guide slot hole 200a rotates relative to the position where the puncture needle 700 contacts the position rotator 300, so that the puncture needle 700 is tilted. Therefore, by controlling the rotation amount and rotation direction of the angle rotator 100, the tilt angle and direction of the puncture needle 700 can be adjusted.

[0062] refer to Figure 6 and Figure 7 As shown, the size of the guide slot hole 200a gradually decreases from the outer side surface to the inner side surface of the fixed disk 210, that is, the guide slot hole 200a is in a trumpet shape, which further prevents the head 710 of the puncture needle 700 from detaching and causing the puncture needle 700 to move axially.

[0063] like Figure 1 As shown, the position rotator 300 is disc-shaped, and the through hole 300a of the position rotator 300 may be formed in a circular shape for the needle portion 720 of the puncture needle 700 to pass through.

[0064] Among them, the diameters of the position rotator 300 and the fixed disk 210 are roughly equal, and the diameter of the connecting column 220 is much smaller than the diameter of the fixed disk 210. Therefore, after the position rotator 300, the fixed disk 210 and the connecting column 220 are assembled, the whole is in a dumbbell shape.

[0065] like Figures 1 to 3 As shown, the puncture device also includes:

[0066] The damping nail 400 penetrates the device body 110 and is screwed to the fixer 200 .

[0067] The damping nail 400 includes a damping threaded section 410 and a damping sliding section 420 connected to each other. The damping threaded section 410 is threadedly connected to the fixer 200, and the damping sliding section 420 is outer-mounted with the device body 110. It can be seen that the damping nail 400 is fixed on the fixer 200, and the angle rotator 100 rotates relative to the damping sliding section 420 of the damping nail 400, that is, the angle rotator 100 rotates relative to the fixer 200.

[0068] Specifically, the center of the body 110 of the angle rotator 100 is aligned with the center of the fixing plate 210, so that the damping nail 400 passes through the center of the body 110 to be screwed with the center of the fixing plate 210. The body 110 is provided with a hole through which the damping nail 400 passes, and the center of the damping nail 400 is provided with a threaded hole for screwing the damping nail 400.

[0069] As a preferred embodiment, the puncture device further includes an anti-skid column 500, which is located between the damping sliding section 420 of the damping nail 400 and the device body 110. That is, the damping nail 400 passes through the anti-skid column 500, is connected to the angle rotator 100, and is screwed to the fixing plate 210 of the fixer 200. At this time, rotating the angle rotator 100 drives the rotation damping, and can be rotated arbitrarily and fixed and stopped arbitrarily. The inner surface of the anti-skid column 500 is smooth to cooperate with the damping sliding section 420 of the damping nail 400, and the outer surface of the anti-skid column 500 is rough to cooperate with the hole of the device body 110, and the inner wall of the hole of the device body 110 is also rough to achieve damping cooperation between the two.

[0070] refer to Figure 1 The damping nail 400 also includes a damping head 430. 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. Therefore, the damping head 430 can abut against the end face of the anti-slip column 500.

[0071] like Figure 1 As shown, the puncture device further includes a fixing nail 600, and the fixing nail 600 includes connected:

[0072] A fixing thread segment 620, wherein the fixing thread segment 620 is threadedly connected to the fixing device 200;

[0073] The fixed sliding section 610 is provided with the position rotator 300 on its outer surface.

[0074] The fixed threaded section 620 passes through the position rotator 300 to be threadedly connected to the connecting column 220 of the fixer 200, and 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 nail 600, that is, the position rotator 300 can rotate relative to the fixer 200.

[0075] The diameter of the fixed sliding section 610 is greater than the diameter of the fixed threaded section 620, so that the fixed sliding section 610 can abut against the end of the connecting column 220. The fixing nail 600 also includes a fixed head 630, the fixed sliding section 610 is connected between the fixed head 630 and the fixed threaded section 620, and the diameter of the fixed head 630 is greater than the diameter of the fixed sliding section 610, so that the fixed head 630 can abut against the position rotator 300.

[0076] like Figure 2 and Figure 6 As shown, the damping nail 400, the fixture 200 and the fixing nail 600 are all hollow structures and are interconnected for the puncture needle 700 to pass through, and the head 710 of the puncture needle 700 can be limited in the damping nail 400. The puncture needle 700 inserted in the hollow structure of the damping nail 400, the fixture 200 and the fixing nail 600 corresponds to the central puncture needle.

[0077] The position rotator 300 can be made of metal, nylon, silicone, etc. The angle rotator 100 and the fixer 200 can be made of metal, nylon, etc. The puncture needle 700 can be a syringe needle of various specifications.

[0078] refer to Figure 8 and Fig. 9 The puncture device of this embodiment can be used as a single or multiple puncture needles 700, and its working principle is as follows:

[0079] Select the corresponding mounting hole 100a, the guide slot hole 200a and the through hole 300a, and / or the hollow structure of the damping nail 400, the fixer 200 and the fixing nail 600 as the puncture needle 700 for insertion;

[0080] The angle rotator 100 is rotated to tilt the puncture needle 700, thereby adjusting the puncture angle of the puncture needle 700. The position rotator 300 is rotated to rotate the position where the puncture needle 700 contacts the position rotator 300 relative to the position where the puncture needle 700 contacts the guide slot hole 200a, thereby adjusting the puncture angle of the puncture needle 700. Therefore, the puncture angle and puncture position of the puncture needle 700 can be adjusted by the cooperation between the angle rotator 100 and the position rotator 300.

[0081] After the puncture needle 700 penetrates the tissue, the puncture needle 700 can be slightly withdrawn, and the angle of the puncture needle 700 can be changed after adjusting the angle rotator 100 separately to further puncture and rotate the vein. The blood collection of the puncture needle 700 is observed, and the puncture needle that reaches the target vein is found according to the blood collection, the guide wire is placed, and the puncture device is withdrawn.

[0082] The puncture needle 700 can be supplemented after puncture, and when the blood vessel is not found during puncture, the puncture needle 700 can be supplemented after adjusting the angle with the angle rotator 100. Since the inserted puncture needle 700 has not been removed, when adding a puncture needle 700, only the position that has not been punctured is punctured, which improves the hit rate. In the traditional single-needle puncture mode, punctures are often repeated at almost the same position.

[0083] In summary, the puncture device of this embodiment has an angle rotator 100 for adjusting the puncture angle, the position rotator 300, etc., which can adjust the puncture angle and fix the puncture position in cooperation with CT guidance before puncture, realize the control of the puncture needle point and the needle angle, and avoid the adverse effects on the patient caused by human factors such as unskilled operation of the doctor during the puncture process. The device can greatly improve the puncture efficiency and reduce unnecessary puncture damage. The puncture device of this embodiment is used to guide the physician to perform percutaneous puncture operations to ensure accurate subcutaneous puncture. It is usually used under the guidance of ultrasound or CT. Through imaging technology and computer algorithms, it can help the physician to 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 the operation, while shortening the operation time and recovery period, and has been widely used. The puncture device of this embodiment can perform simultaneous puncture of multiple puncture needles at a time, thereby improving the puncture efficiency. The puncture device can freely adjust the position and angle of the puncture needle, and can select the number of puncture needles. When the target is not hit, the puncture angle can be adjusted continuously, or the number of puncture needles can be gradually increased. After the puncture needle punctures the femoral vein, the puncture needle that hits the target can be judged according to the blood collection situation, and the guide wire can be placed and the puncture device can be withdrawn. The device can greatly improve the puncture efficiency and reduce unnecessary puncture damage. The device is not limited to puncturing other blood vessels.

[0084] The embodiments described above are only used to illustrate the technical ideas and features of the present invention, and their purpose is to enable technicians in this field to understand the contents of the present invention and implement them accordingly. The patent scope of the present invention cannot be limited only by this embodiment, that is, any equivalent changes or modifications made according to the spirit disclosed by the present invention still fall within the patent scope of the present invention.

Claims

1. A trocar, characterized in that: include: An angle rotator (100), wherein a plurality of mounting holes (100a) are provided on the outer periphery of the angle rotator (100), and the mounting holes (100a) are used to position and fix the head (710) of the puncture needle (700); A fixer (200), the fixer (200) being connected to the angle rotator (100) for relative rotation, the fixer (200) being provided with a plurality of guide slot holes (200a), the guide slot holes (200a) corresponding one-to-one with the mounting holes (100a); A position rotator (300) is connected to the fixer (200) for relative rotation, and a plurality of through holes (300a) are provided on the position rotator (300), and the through holes (300a) correspond one-to-one with the guide slot holes (200a) for the needle portion (720) of the puncture needle (700) to pass through.

2. The trocar according to claim 1, characterized in that: The angle rotator (100) comprises: The device body(110); A plurality of needle holding claws (120), wherein the proximal end of the needle holding claw (120) is connected to the device body (110), and the distal end of the needle holding claw (120) is provided with a mounting hole (100a).

3. The trocar according to claim 2, characterized in that: A notch (100b) is provided at the distal end of the needle gripper (120), and the notch (100b) communicates the inside and outside of the mounting hole (100a).

4. The trocar according to claim 2, characterized in that: Also includes: A damping nail (400) is inserted through the device body (110) and is screwed to the fixer (200).

5. The trocar according to claim 4, characterized in that: The damping nail (400) comprises: a damping thread section (410), wherein the damping thread section (410) is threadedly connected to the fixer (200); A damping sliding section (420), wherein the damping sliding section (420) is provided with the device body (110) on its outer cover.

6. The trocar according to claim 5, characterized in that: Also includes: An anti-skid column (500) is located between the damping sliding section (420) of the damping nail (400) and the device body (110).

7. The trocar according to claim 1, characterized in that: The fixer (200) comprises: A fixed disk (210), wherein a guide slot hole (200a) is provided on the fixed disk (210), and an outer side surface of the fixed disk (210) is connected to the angle rotator (100); A connecting post (220), wherein the connecting post (220) is connected to the inner side surface of the fixing plate (210) and the position rotator (300).

8. The trocar according to claim 7, characterized in that: The guide slot hole (200a) is arc-shaped, and the size of the guide slot hole (200a) gradually decreases from the outer side surface to the inner side surface of the fixing plate (210).

9. The trocar according to claim 4, characterized in that: It also includes a fixing nail (600), wherein the fixing nail (600) includes: A fixing thread section (620), wherein the fixing thread section (620) is threadedly connected to the fixing device (200); A fixed sliding section (610), the position rotator (300) being disposed outside the fixed sliding section (610).

10. The trocar according to claim 9, characterized in that: The damping pin (400), the fixer (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 limited by the damping pin (400).

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