Puncture device

Abstract

The utility model provides a puncture device, and relates to the technical field of puncture tools. The puncture device comprises a puncture needle, an extension tube, a dosing tube and an angle adjusting mechanism, the tail end of the puncture needle penetrates through the front end face of the extension tube and then extends into the extension tube, one end of the dosing tube is connected with the tail end of the puncture needle, the other end of the dosing tube penetrates out of the tail end of the extension tube and then extends outwards, and the angle adjusting mechanism is arranged on the extension tube. The device is used for adjusting the puncture angle of the puncture needle. According to the puncture device, the puncture angle of the puncture needle can be flexibly adjusted, the medicine injection depth can be accurately grasped, and the nerve block effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of puncture tools, in particular to a puncture device. Background Art

[0002] Nerve block is a pain treatment technique that uses puncture to accurately locate and block inflamed or compressed nerves to eliminate pain and discomfort. Nerve block performed by thoracic surgeons, under direct vision of the thoracoscope, punctures the pleura 1-2mm at the appropriate location through a puncture from the inside to the outside, and then completes the drug injection.

[0003] Clinically, when performing nerve block operations, thoracic surgeons generally use a self-assembled intrathoracic paravertebral nerve block device (including a needle holder, a syringe, a scalp needle, etc.). They clamp the scalp needle with the needle holder and insert it into the patient's chest cavity. After determining the drug injection position, they pierce the pleura with the scalp needle tip and use the drug administration tube and syringe connected to the end of the scalp needle to inject the drug to complete the nerve block operation.

[0004] However, this self-assembled puncture device has a complex and unreasonable structure and is extremely inconvenient in actual operation. This is because when puncturing from the inside to the outside in the chest cavity, the medical staff has extremely limited operating space and it is difficult to accurately grasp the puncture angle and the depth of needle insertion, which can easily cause inaccurate drug injection position and depth, affecting the effect of nerve block. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the utility model provides a puncture device, which at least solves the problem that the puncture angle and depth are difficult to control in the existing combined intrathoracic paravertebral puncture device.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A puncture device, comprising: a puncture needle, an extension tube, a medication tube, and an angle adjustment mechanism;

[0010] The end of the puncture needle extends to the interior of the extension tube; one end of the drug delivery tube is connected to the end of the puncture needle, and the other end passes through the end of the extension tube and extends outward;

[0011] The angle adjustment mechanism is arranged on the puncture needle or the extension tube, and is used for adjusting the insertion angle of the puncture needle.

[0012] Preferably, the angle adjustment mechanism includes a bending hose and an angle adjustment member; the bending hose divides the extension tube into a front extension tube and a rear extension tube, and then connects the front extension tube and the rear extension tube in series; the angle adjustment member is arranged on the front extension tube.

[0013] Preferably, the angle adjustment mechanism comprises a needle holding handle; the needle holding handle is fixed on the puncture needle or the extension tube and is arranged at a certain angle to the puncture needle or the extension tube.

[0014] Preferably, the distance from the needle tip of the puncture needle to the front end surface of the extension tube is 1-5 mm.

[0015] Preferably, a baffle is provided on the puncture needle body, and the distance between the baffle and the puncture needle tip is 1-5 mm.

[0016] Preferably, the needle head of the puncture needle is conical.

[0017] Preferably, a plurality of microholes are formed on the needle body of the puncture needle that penetrates into human tissue.

[0018] Preferably, the angle adjustment member is a pull rope, and the pull rope is connected to the front end extension tube via a fixing member fixed on the front end extension tube.

[0019] Preferably, the needle holding handle is detachably connected to the puncture needle via a sleeve sleeved on the end of the puncture needle body.

[0020] Preferably, the needle holding handle is integrated with the sleeve.

[0021] (III) Beneficial effects

[0022] The utility model provides a puncture device. Compared with the prior art, it has the following beneficial effects:

[0023] The utility model proposes a puncture device, which includes: a puncture needle, an extension tube, a drug administration tube, and an angle adjustment mechanism, wherein the end of the puncture needle passes through the through hole opened on the front end of the extension tube and extends to the inside of the extension tube, and one end of the drug administration tube is connected to the end of the puncture needle, and the other end passes through the end of the extension tube and extends outward; in addition, the puncture device is also provided with an angle adjustment mechanism for adjusting the insertion angle of the puncture needle. The puncture device of the utility model can flexibly adjust the insertion angle of the puncture needle, accurately grasp the injection depth of the drug, and improve the effect of nerve block. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic structural diagram of a puncture device in Example 1 of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the puncture device in Example 2 of the utility model.

[0027] In the figure:

[0028] 1-puncture needle; 11-conical needle; 12-micro-hole;

[0029] 2- extension tube; 21- front extension tube; 22- rear extension tube;

[0030] 3-dose tube;

[0031] 4-angle adjustment mechanism; 411-bending hose; 412-angle adjustment member; 421-needle holding handle; 422-sleeve;

[0032] 5-Fixer;

[0033] 6-Baffle. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] The embodiment of the present application provides a puncture device to solve the problems of the existing combined intrathoracic paravertebral puncture device, such as complex structure, poor control of the insertion depth and angle, and inconvenient operation, thereby achieving the purpose of efficient and accurate puncture.

[0036] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0037] In order to solve the problem that it is difficult to accurately grasp the puncture angle and the penetration depth of the needle in nerve blocks in the prior art, the present application proposes a puncture device, on which an angle adjustment mechanism is arranged that can well adjust the angle at which the needle penetrates into human tissue. By controlling the distance between the needle and the extension tube, or by providing a baffle on the needle, the depth at which the needle penetrates into human tissue can be better controlled, thereby greatly improving the accuracy of the drug injection position (angle and depth) and improving the effect of nerve block.

[0038] In order to better understand the technical solution, the above technical solution will be described in detail below in conjunction with the drawings and specific implementation methods of the specification. Further, in order to facilitate the elaboration and explanation of the technical solution of this application, in the following embodiments of this application, the application scenario of the puncture device proposed in this application in the nerve block surgery of the anesthesiology department is explained, but it should be noted that the puncture device proposed in this application includes but is not limited to the nerve block injection of the anesthesiologist, and can also be used for postoperative analgesic injection of laparoscopic surgery, abdominal puncture, thoracotomy and other puncture operations that require precise distance control, etc.

[0039] Embodiment 1:

[0040] The puncture device proposed in this embodiment includes: a puncture needle 1, an extension tube 2, a medication tube 3, and an angle adjustment mechanism 4.

[0041] The end of the puncture needle 1 passes through the through hole formed on the front end of the extension tube 2 and extends to the interior of the extension tube 2. One end of the medication tube 3 is connected to the end of the puncture needle 1, and the other end passes through the end of the extension tube 2 and extends outward. The angle adjustment mechanism 4 is provided on the puncture needle 1 or the extension tube 2 and is used to adjust the insertion angle of the puncture needle 1.

[0042] The puncture device proposed in this embodiment can flexibly adjust the insertion angle of the puncture needle, so as to accurately control the angle and depth of drug injection.

[0043] See also Figure 1 Specifically, the puncture needle 1 is fixed at the front end of the extension tube 2. In specific implementation, a through hole is opened at the center of the end surface of the front end of the extension tube 2. The end of the puncture needle 1 passes through the through hole and extends to the inside of the extension tube 2. The through hole and the outer wall of the puncture needle 1 are fixed to each other to ensure the stability of the puncture needle 1. The drug delivery tube 3 is arranged in the inner cavity of the entire extension tube 2, and one end of the drug delivery tube 3 is connected to the end of the puncture needle 1, and the other end of the drug delivery tube 3 passes through the rear end of the extension tube 2 and extends outside the extension tube 2.

[0044] In order to find the drug administration position quickly and accurately in the patient's chest cavity according to the actual situation during the puncture operation, the needle angle of the puncture needle 1 needs to be adjusted. A preferred method is to equip the entire puncture device with an angle adjustment mechanism 4.

[0045] Specifically, in this embodiment, the angle adjustment mechanism 4 includes a bending hose 411 and an angle adjustment member 412. At this time, the extension tube 2 is disassembled into a front extension tube 21 and a rear extension tube 22. And in the specific implementation, in order to facilitate holding and angle adjustment, ensure that the length of the rear extension tube 22 is greater than the length of the front extension tube 2. Among them, one end of the front extension tube 21 fixes the puncture needle 1, and the other end is connected to one end of the rear extension tube 22 through the bending hose 411. The entire extension tube 2 (including the front extension tube 21 and the rear extension tube 22) and the bending hose 411 are provided with a connected cavity inside to accommodate the drug delivery tube 3, one end of the drug delivery tube 3 is connected to the end of the puncture needle 1, and the other end of the drug delivery tube 3 passes through the other end of the rear extension tube 22 and extends outward. The angle adjustment member 412 is fixed on the front extension tube 21.

[0046] Furthermore, in order to prevent the angle adjustment member 412 from interfering with the operation process of the intrathoracic paravertebral puncture surgery, in the present embodiment, the angle adjustment member 412 is a pull rope. In addition, in order to facilitate the fixing of the angle adjustment member 412 (i.e., the pull rope) on the front end extension tube 21, a fixing member 5 is provided on the front end extension tube 21 to connect the front end extension tube 21 and the pull rope. Of course, the specific form of the fixing member 5 is not specifically limited in the present embodiment, as long as the function of connecting the front end extension tube 21 and the pull rope can be realized. For example, the fixing member 5 can be configured as a fixed pull ring, such as Figure 1 shown.

[0047] After the medical staff inserts the puncture needle 1 and the extension tube 2 into the patient's chest cavity, they pinch the rear extension tube 22 with one hand and pull the drawstring with the other hand, and the insertion angle of the puncture needle 1 can be adjusted with the bending of the bending hose 411.

[0048] Preferably, in order to prevent the drug solution from leaking out of the wound punctured by the needle after the drug is injected, a preferred method is that the needle of the puncture needle 1 is a conical needle. Different from the mechanism of the bevel incision needle scratching the human tissue at the puncture site, the conical needle adopts the principle of expanding the human tissue during puncture, so that after the puncture needle 1 is withdrawn from the human tissue, the expanded hole shrinks and recovers, thereby preventing the leakage of the injected drug solution.

[0049] More preferably, in order to further improve the drug administration effect during puncture, a plurality of microholes 12 are opened in the needle body portion of the puncture needle 1 close to the conical needle head. These plurality of microholes 12 enable the drug solution to be evenly administered to the human tissue from multiple directions on the side of the needle body at the same time when injected, thereby improving the drug administration effect.

[0050] In order to accurately control the depth of the needle piercing the pleura and entering the human tissue to achieve a better drug administration effect, a preferred method is that when the puncture needle 1 is fixed on the through hole, the distance between the end face center of the front end of the extension tube 2 and the needle tip of the puncture needle 1 is controlled to be 1-5mm. Alternatively, in another embodiment, the distance between the end face center of the front end of the extension tube 2 and the needle tip of the puncture needle 1 is not limited, but a baffle 6 is added to the needle body of the puncture needle 1, and the baffle 6 is fixedly mounted on the needle body, and the distance from the baffle 6 to the needle tip of the puncture needle 1 is controlled to be 1-5mm. Of course, other methods that can achieve the same function are also within the protection scope of the present application scheme, as long as the purpose of controlling the penetration depth of the puncture needle 1 can be achieved, and no further specific restrictions are made here.

[0051] Embodiment 2:

[0052] Based on Example 1, this embodiment proposes another angle adjustment mechanism 4 for the puncture device proposed in this application. Figure 2 In this embodiment, the angle adjustment mechanism 4 includes a needle holding handle 421, which is fixed to the puncture needle 1 or the extension tube 2 and is arranged at a certain angle to the puncture needle 1 or the extension tube 2. At this time, the extension tube 2 only needs to retain the front section of the extension tube 2, and the medication tube 3 is exposed outside the extension tube 2.

[0053] When the needle holding handle 421 is fixed on the puncture needle 1, a sleeve 422 is fixed on one end of the needle holding handle 421 close to the needle body of the puncture needle 1. The inner tube aperture of the sleeve 422 is adapted to the needle body of the puncture needle 1, so that when in use, the sleeve 422 can be directly put on the puncture needle 1 and arranged close to the end of the puncture needle 1 to prevent the needle body from not penetrating deep enough into human tissue.

[0054] Of course, in specific implementation, the needle holding handle 421 and the sleeve 422 or the extension tube 2 can be integrated, as long as the needle holding handle 421 and the sleeve 422 or the extension tube 2 are set at a certain angle and can drive the puncture needle 1 to adjust the angle.

[0055] Furthermore, in order to meet the individual differences of different patients and ensure that the puncture needle can be inserted into the patient's body tissue at an adjustable angle, the needle holding handle 421 is connected to the sleeve 422 or the extension tube 2 to be set to an adjustable angle, for example, the angle is adjustable within 0-90 degrees. In specific implementation, an elastic member, such as a spring, can be set within the angle formed by the needle holding handle 421 and the sleeve 422 or the extension tube 2, and the angle can be flexibly adjusted by squeezing the needle holding handle 42.

[0056] Embodiment 3:

[0057] In order to increase the pressure of drug administration, and thus improve the speed and effect of drug administration, this embodiment, based on Embodiment 1 or 2, further includes: a drug delivery device (not shown in the figure).

[0058] In specific implementation, a drug delivery device is connected to one end of the drug delivery tube 3 extending to the outside of the extension tube 2. Medical staff connect the drug delivery tube 3 through the drug delivery device and then deliver the drug, thereby rapidly injecting the drug solution into the drug delivery site of the human tissue.

[0059] Furthermore, the applicator includes but is not limited to a syringe.

[0060] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0061] 1. The utility model proposes a puncture device, which includes: a puncture needle, an extension tube, a drug delivery tube, and an angle adjustment mechanism, wherein the end of the puncture needle extends to the interior of the extension tube, one end of the drug delivery tube is connected to the end of the puncture needle, and the other end passes through the end of the extension tube and extends outward; in addition, the puncture device is also provided with an angle adjustment mechanism for adjusting the insertion angle of the puncture needle. The puncture device of the utility model can flexibly adjust the insertion angle of the puncture needle, accurately grasp the injection angle and depth of the drug, and improve the effect of nerve block.

[0062] 2. The utility model proposes a puncture device, which controls the distance from the puncture needle tip to the front end surface of the extension tube, or sets a baffle on the puncture needle body to further control the depth of the puncture needle penetrating into the human tissue, thereby further improving the accurate position of the drug solution injected into the human tissue and further improving the effect of nerve blocking.

[0063] 3. The utility model proposes a puncture device, the needle of which is a conical needle, which can prevent the leakage of the injected drug solution; at the same time, a number of micro-holes are opened on the needle body of the puncture needle that penetrates into the human tissue, so that the drug can be evenly injected into the human tissue from multiple directions on the side of the needle body at the same time, thereby improving the drug administration effect. The design of the conical needle and micro-holes further improves the effect of nerve block.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A puncture device, characterized in that: The puncture device comprises: a puncture needle (1), an extension tube (2), a medication tube (3), and an angle adjustment mechanism (4); The end of the puncture needle (1) extends to the interior of the extension tube (2); one end of the medication tube (3) is connected to the end of the puncture needle (1), and the other end passes through the end of the extension tube (2) and then extends outward; The angle adjustment mechanism (4) is arranged on the puncture needle (1) or the extension tube (2) and is used to adjust the insertion angle of the puncture needle (1).

2. The puncture device according to claim 1, characterized in that: The angle adjustment mechanism (4) comprises a bending hose (411) and an angle adjustment member (412); the bending hose (411) separates the extension tube (2) into a front extension tube (21) and a rear extension tube (22), and then connects the front extension tube (21) and the rear extension tube (22) in series; the angle adjustment member (412) is arranged on the front extension tube (21).

3. The puncture device according to claim 1, characterized in that: The angle adjustment mechanism (4) comprises a needle holding handle (421); the needle holding handle (421) is fixed on the puncture needle (1) or the extension tube (2), and is arranged at a certain angle to the puncture needle (1) or the extension tube (2).

4. The puncture device according to claim 1, characterized in that: The distance between the needle tip of the puncture needle (1) and the front end surface of the extension tube (2) is 1-5 mm.

5. The puncture device according to claim 1, characterized in that: A baffle (6) is arranged on the needle body of the puncture needle (1), and the distance between the baffle (6) and the needle tip of the puncture needle (1) is 1-5 mm.

6. The puncture device according to claim 4 or 5, characterized in that: The needle head of the puncture needle (1) is conical.

7. The puncture device according to claim 6, characterized in that: A plurality of micro-holes (12) are formed on the needle body of the puncture needle (1) that penetrates into human tissue.

8. The puncture device according to claim 2, characterized in that: The angle adjustment member (412) is a drawstring, and the drawstring is connected to the front end extension tube (21) via a fixing member (5) fixed on the front end extension tube (21).

9. The puncture device according to claim 3, characterized in that: The needle holding handle (421) is detachably connected to the puncture needle (1) via a sleeve (422) sleeved on the end of the needle body of the puncture needle (1).

10. The puncture device according to claim 9, characterized in that: The needle holding handle (421) and the sleeve (422) are integrally arranged.

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