CN218484633U - Puncture needle capable of avoiding intestinal canal injury - Google Patents

Abstract

Translated fromChinese

本实用新型涉及医疗器械技术领域，具体公开了一种避免肠管损伤的穿刺针，包括针芯，针芯的端部设有压迫面，压迫面能够压在组织或器官表面，压迫面中部设有针尖，针尖凸出压迫面的尺寸小于等于1mm。本方案用以降低腹腔穿刺时刺穿肠管的概率。

The utility model relates to the technical field of medical instruments, and specifically discloses a puncture needle for avoiding intestinal tube damage, which includes a needle core. The end of the needle core is provided with a compression surface, which can be pressed against the surface of a tissue or an organ. Needle tip, the size of the needle tip protruding from the compression surface is less than or equal to 1mm. This protocol is used to reduce the probability of intestinal puncture during paracentesis.

Description

Translated fromChinese

一种避免肠管损伤的穿刺针A puncture needle for avoiding intestinal damage

技术领域technical field

本实用新型涉及医疗器械技术领域，具体涉及一种避免肠管损伤的穿刺针。The utility model relates to the technical field of medical instruments, in particular to a puncture needle for avoiding intestinal tube damage.

背景技术Background technique

腹腔穿刺术是通过穿刺针或者导管直接从腹前壁刺入腹膜腔抽取腹腔积液或向腹腔内注入药物，用以协助诊断和治疗疾病的一项技术。Paracentesis is a technique that directly penetrates the peritoneal cavity from the anterior abdominal wall with a puncture needle or catheter to extract ascites or inject drugs into the peritoneal cavity to assist in the diagnosis and treatment of diseases.

在对腹腔进行分穿刺时，需要根据临床检查及影像学检查综合考虑穿刺位置，明确穿刺位置的局部周围没有相应的肠管和其他脏器，以避免存在的误伤风险。但在实际应用中，会遇到肠梗阻、肠管粘连或肠管与腹壁粘合等情况，这种情况下，需要医务人员精准控制穿刺针的穿刺深度以及穿刺的力度以避免穿刺针在刺穿腹腔的瞬间将肠管刺穿。When sub-puncturing the abdominal cavity, it is necessary to comprehensively consider the puncture location based on clinical examination and imaging examination, and make sure that there are no corresponding intestines and other organs around the puncture location, so as to avoid the risk of accidental injury. However, in practical applications, intestinal obstruction, intestinal adhesion, or intestinal adhesion to the abdominal wall may occur. In this case, medical personnel need to precisely control the puncture depth and force of the puncture needle to prevent the puncture needle from puncturing the abdominal cavity. Instantaneously pierces the intestinal tube.

但是因为穿刺针本身比较尖锐，无法避免腹腔穿刺时刺穿肠管的情况，一旦肠管被刺穿，肠管内的肠液漏入腹腔引发感染。However, because the puncture needle itself is relatively sharp, it is impossible to avoid the situation of piercing the intestinal tube during abdominal puncture. Once the intestinal tube is pierced, the intestinal fluid in the intestinal tube leaks into the abdominal cavity and causes infection.

实用新型内容Utility model content

本实用新型意在提供一种避免肠管损伤的穿刺针，以降低腹腔穿刺时刺穿肠管的概率。The utility model intends to provide a puncture needle which avoids damage to the intestine, so as to reduce the probability of piercing the intestine during abdominal puncture.

为达到上述目的，本实用新型采用如下技术方案：In order to achieve the above object, the utility model adopts the following technical solutions:

一种避免肠管损伤的穿刺针，包括针芯，针芯的端部设有压迫面，压迫面能够压在组织或器官表面，压迫面中部设有针尖，针尖凸出压迫面的尺寸小于等于1mm。A puncture needle for avoiding intestinal damage, comprising a needle core, the end of the needle core is provided with a compression surface, the compression surface can be pressed against the surface of tissues or organs, a needle point is provided in the middle of the compression surface, and the size of the needle point protruding from the compression surface is less than or equal to 1mm .

本方案的原理及优点是：实际应用时，利用穿刺针穿破腹腔时，通过凸出压迫面的针尖以方便将腹腔刺破，降低穿刺针穿刺的难度；而在穿刺针穿破腹腔后，因针尖凸出压迫面的尺寸仅有不到1mm，而肠管壁厚约为3mm，所以即便存在腹腔内肠梗阻、肠管粘连或肠管与腹壁粘合的情况，针尖在扎到肠管上后，针尖最多只能扎入针尖的长度的深度，针尖扎入肠管过程中，压迫面也在整体逐渐靠近肠管，当压迫面抵压在肠管上后，压迫面整体推动肠管移动，进而保证了位于压迫面中部的针尖不会继续向肠管方向扎入，避免了肠管被刺穿而损伤的情况。The principle and advantages of this scheme are: in actual application, when the puncture needle is used to puncture the abdominal cavity, the needle point protruding from the oppressive surface is used to puncture the abdominal cavity conveniently and reduce the difficulty of puncture by the puncture needle; after the puncture needle punctures the abdominal cavity, Since the protrusion of the needle point from the compression surface is only less than 1 mm, and the thickness of the intestinal tube is about 3 mm, even if there is intra-abdominal intestinal obstruction, intestinal adhesion, or adhesion between the intestinal tube and the abdominal wall, after the needle tip sticks to the intestinal tube, The needle tip can only penetrate the depth of the length of the needle tip at most. When the needle tip is inserted into the intestinal canal, the oppressive surface is gradually approaching the intestinal canal as a whole. The needle point in the middle of the face will not continue to pierce the intestinal canal, avoiding the damage caused by the puncture of the intestinal canal.

此外，采用本方案时，因有压迫面和凸出1mm不到的针尖的存在，使得即便在腹腔穿刺瞬间出现腹腔壁和肠管的快速回弹也会被压迫面阻挡住肠管向穿刺针一侧的移动，保证了肠管不会被刺穿的同时，也降低了腹腔穿刺的难度。In addition, when this plan is adopted, due to the existence of the compression surface and the needle tip protruding less than 1mm, even if the abdominal wall and intestinal tube rebound rapidly at the moment of abdominal puncture, the intestinal tube will be blocked by the compression surface to the side of the puncture needle The movement ensures that the intestinal tube will not be punctured, and at the same time reduces the difficulty of abdominal puncture.

优选的，作为一种改进，所述压迫面呈半球面或半椭圆面。Preferably, as an improvement, the pressing surface is a hemispherical or semielliptical surface.

有益效果：本方案的穿刺针在穿刺过程中，压迫面既能起到对被抵压肠管的整体推动，又在穿刺时起到穿刺的引导作用，保证穿刺针不损伤肠管内壁的基础上，降低穿刺难度，方便穿刺针更快实现穿刺。Beneficial effects: During the puncture process of the puncture needle of this solution, the compression surface can not only push the intestines to be pressed as a whole, but also guide the puncture during puncture, so as to ensure that the puncture needle does not damage the inner wall of the intestines. Reduce the difficulty of puncture, and facilitate the puncture needle to achieve puncture faster.

优选的，作为一种改进，所述压迫面呈锥面，锥面的锥角大于120°且小于180°。Preferably, as an improvement, the pressing surface is a conical surface, and the cone angle of the conical surface is greater than 120° and less than 180°.

有益效果：本方案的锥面也对穿刺过程具有导向作用，相比将压迫面作为平面的方式有利于降低穿刺的难度，方便穿刺针更快实现穿刺。同时锥面与针芯中轴线的夹角较大，使得压迫面虽为锥面，但是通过锥角的限定，使得压迫面很钝，进而保证压迫面能够在针尖完全插入肠管后抵推肠管整体移动。Beneficial effects: the tapered surface of this solution also has a guiding effect on the puncture process, which is beneficial to reduce the difficulty of puncture compared with the method of using the compression surface as a plane, and facilitates the puncture needle to achieve puncture faster. At the same time, the angle between the cone surface and the center axis of the needle core is relatively large, so that although the compression surface is a cone surface, the limitation of the cone angle makes the compression surface very blunt, thereby ensuring that the compression surface can push the entire intestine after the needle tip is completely inserted into the intestine. move.

优选的，作为一种改进，所述压迫面为环形面，环形面凸出针芯端部。Preferably, as an improvement, the pressing surface is an annular surface protruding from the end of the needle core.

有益效果：采用本方案时，因针芯横截面较小，而针芯的横截面积相比肠管小很多，故而当针芯的针尖完全插入肠管上后，凸出针芯端部的环形面直接抵紧在肠管上，保证压迫面的环形面基本完全抵在肠管上，有利于提高压迫面对肠管的整体推移效果。Beneficial effect: when adopting this scheme, because the cross-section of the needle core is small, and the cross-sectional area of the needle core is much smaller than that of the intestinal tube, when the needle point of the needle core is completely inserted into the intestinal tube, the annular surface at the end of the needle core protrudes It is directly pressed against the intestinal tube to ensure that the annular surface of the compressing surface is basically completely pressed against the intestinal tube, which is beneficial to improving the overall effect of pushing the compression surface on the intestinal tube.

优选的，作为一种改进，所述针尖凸出压迫面的尺寸大于0.5mm。Preferably, as an improvement, the size of the needle point protruding from the pressing surface is larger than 0.5 mm.

有益效果：本方案使得针尖能够不至于过小而影响穿刺的难易程度。Beneficial effect: the scheme makes the needle point not too small to affect the ease of puncturing.

优选的，作为一种改进，所述针芯外套设有引导鞘，引导鞘端部带有导向面。Preferably, as an improvement, the needle core housing is provided with a guide sheath, and the end of the guide sheath has a guide surface.

通过带有导向面的引导鞘的设置，方便通过针芯带动引导鞘一起进行穿刺。穿刺完成后，拔出针芯，即可利用引导鞘进行药物注入腹腔或者从腹腔抽取腹腔内容物等操作。Through the setting of the guide sheath with the guide surface, it is convenient to drive the guide sheath through the needle core to perform puncture together. After the puncture is completed, the needle core can be pulled out, and the guide sheath can be used to inject drugs into the abdominal cavity or extract the abdominal cavity contents from the abdominal cavity.

附图说明Description of drawings

图1为本实用新型实施例一的结构主视图。Fig. 1 is a structural front view ofEmbodiment 1 of the present utility model.

图2为本实用新型实施例一的主视剖视图。Fig. 2 is a front sectional view ofEmbodiment 1 of the utility model.

图3为本实用新型实施例二中针芯的结构主视图。Fig. 3 is a front view of the structure of the needle core in the second embodiment of the utility model.

图4为本实用新型实施例二中针芯的主视剖视图。Fig. 4 is a front sectional view of the needle core in the second embodiment of the present utility model.

图5为本实用新型实施例三中针芯的结构主视图。Fig. 5 is a front view of the structure of the needle core in the third embodiment of the utility model.

图6为本实用新型实施例三中针芯的主视剖视图。Fig. 6 is a front sectional view of the needle core inEmbodiment 3 of the present utility model.

图7为图5的俯视图。FIG. 7 is a top view of FIG. 5 .

具体实施方式Detailed ways

下面通过具体实施方式进一步详细说明：The following is further described in detail through specific implementation methods:

说明书附图中的附图标记包括：针芯1、针尖2、压迫面3、引导鞘4、导向面5。The reference signs in the drawings of the specification include:needle core 1 ,needle point 2 ,compression surface 3 ,guide sheath 4 , andguide surface 5 .

实施例一Embodiment one

基本如附图1至图2所示，一种避免肠管损伤的穿刺针，包括针芯1，针芯1的端部设有压迫面3，压迫面3能够压在组织或器官表面，压迫面3中心设有针尖2，针尖2凸出压迫面3的尺寸大于0.5mm而小于等于1mm，本实施例中针尖2横截面直径小于等于0.3mm。压迫面3呈半球面或半椭圆面，本实施例中压迫面3呈半球面。针芯1外套有引导鞘4，引导鞘4紧贴针芯1，且引导鞘4端部带有导向面5。针芯1为整体式结构，且针芯1采用金属材质，引导鞘4也为整体式结构，引导鞘4也采用金属材质。Basically as shown in accompanyingdrawings 1 to 2, a puncture needle for avoiding intestinal damage includes aneedle core 1, and the end of theneedle core 1 is provided with acompression surface 3, which can be pressed against the surface of a tissue or an organ, and thecompression surface 3 is provided with aneedle point 2 at the center, and the size of theneedle point 2 protruding from thecompression surface 3 is greater than 0.5 mm but less than or equal to 1 mm. In this embodiment, the cross-sectional diameter of theneedle point 2 is less than or equal to 0.3 mm. Thecompression surface 3 is a hemispherical or semi-elliptical surface, and in this embodiment thecompression surface 3 is a hemispherical surface. Theneedle core 1 is covered with aguide sheath 4 , theguide sheath 4 is close to theneedle core 1 , and the end of theguide sheath 4 has aguide surface 5 . Theneedle core 1 is an integral structure, and theneedle core 1 is made of metal material, and theguide sheath 4 is also of an integral structure, and theguide sheath 4 is also made of metal material.

具体实施过程如下：The specific implementation process is as follows:

利用穿刺针穿破腹腔时，通过凸出压迫面3的针尖2以方便将腹腔刺破，降低穿刺针穿刺的难度；而在穿刺针穿破腹腔后，因针尖2凸出压迫面3的尺寸仅有不到1mm，而肠管壁厚约为3mm，所以即便存在腹腔内肠梗阻、肠管粘连或肠管与腹壁粘合的情况，针尖2在扎到肠管上后，针尖2最多只能扎入针尖2的长度的深度(也即不到1mm的深度)，针尖2扎入肠管过程中，压迫面3也在整体逐渐靠近肠管，当压迫面3抵压在肠管上后，压迫面3整体推动肠管移动，进而保证了位于压迫面3中部的针尖2不会继续向肠管方向扎入，避免了肠管被刺穿而损伤的情况(因肠管尺寸远大于针尖2的尺寸，且针尖2的横截面直径不到0.3mm，针尖2对肠管的伤害基本可以忽略不计，故而本实施例的穿刺针在腹腔穿刺时不会损伤肠管)。When the puncture needle is used to puncture the abdominal cavity, theneedle point 2 protruding from thecompression surface 3 is used to puncture the abdominal cavity conveniently and reduce the difficulty of puncture by the puncture needle; It is less than 1mm, and the thickness of the intestinal tube is about 3mm. Therefore, even if there is intra-abdominal intestinal obstruction, intestinal adhesion, or adhesion between the intestinal tube and the abdominal wall, after theneedle tip 2 sticks to the intestinal tube, theneedle tip 2 can only penetrate into the intestinal tube at most. The depth of the length of the needle point 2 (that is, the depth is less than 1mm). When theneedle point 2 penetrates the intestine, thecompression surface 3 is also gradually approaching the intestine as a whole. The intestinal tube moves, thereby ensuring that theneedle point 2 located in the middle of thecompression surface 3 will not continue to pierce the intestinal tube, avoiding the damage caused by the intestinal tube being pierced (because the size of the intestinal tube is much larger than the size of theneedle point 2, and the cross-section of theneedle point 2 The diameter is less than 0.3 mm, and the injury of theneedle point 2 to the intestine can be ignored, so the puncture needle in this embodiment will not damage the intestine during abdominal puncture).

此外，采用本实施例时，因有压迫面3和凸出1mm不到的针尖2的存在，使得即便在腹腔穿刺瞬间出现腹腔壁和肠管的快速回弹也会被压迫面3阻挡住肠管向穿刺针一侧的移动，保证了肠管不会被刺穿的同时，也降低了腹腔穿刺的难度。In addition, when this embodiment is adopted, due to the presence of thecompression surface 3 and theneedle tip 2 protruding less than 1mm, even if the abdominal wall and intestinal tube rebound rapidly at the moment of paracentesis, thecompression surface 3 will block the direction of the intestinal tube. The movement of one side of the puncture needle ensures that the intestinal tube will not be pierced, and at the same time reduces the difficulty of abdominal puncture.

此外，通过带有导向面5的引导鞘4的设置，方便通过针芯1带动引导鞘4一起进行穿刺。穿刺完成后，拔出针芯1，即可利用引导鞘4进行药物注入腹腔或者从腹腔抽取腹腔内容物等操作。In addition, through the arrangement of theguide sheath 4 with theguide surface 5, it is convenient to drive theguide sheath 4 through theneedle core 1 to perform puncture together. After the puncture is completed, theneedle core 1 is pulled out, and then theguide sheath 4 can be used to perform operations such as injecting medicine into the abdominal cavity or extracting the contents of the abdominal cavity from the abdominal cavity.

实施例二Embodiment two

结合图3和图4，实施例二与实施例一的不同在于，本实施例二的针芯1的压迫面3呈锥面，锥面的锥角大于120°且小于180°。Referring to Fig. 3 and Fig. 4, the difference between the second embodiment and the first embodiment is that thepressing surface 3 of theneedle core 1 of the second embodiment is a conical surface, and the cone angle of the conical surface is greater than 120° and less than 180°.

本实施例的锥面也对穿刺过程具有导向作用，相比将压迫面3作为平面的方式有利于降低穿刺的难度，方便穿刺针更快实现穿刺。同时锥面与针芯1中轴线的夹角较大，使得压迫面3虽为锥面，但是通过锥角的限定，使得压迫面3很钝，进而保证压迫面3能够在针尖2完全插入肠管后抵推肠管整体移动。The tapered surface of this embodiment also has a guiding effect on the puncture process, which is beneficial to reduce the difficulty of puncture compared with the method of using thepressing surface 3 as a plane, and facilitates faster puncture by the puncture needle. At the same time, the angle between the cone surface and the central axis of theneedle core 1 is relatively large, so that although thecompression surface 3 is a cone surface, the limitation of the cone angle makes thecompression surface 3 very blunt, thereby ensuring that thecompression surface 3 can be completely inserted into the intestine at theneedle tip 2 Resist and push the intestinal tube to move as a whole.

实施例三Embodiment Three

结合图5至图7，实施例三与实施例一的不同在于，本实施例三的针芯1的压迫面3为环形面，环形面凸出针芯1端部，环形面位于针芯1端部的外缘位置。5 to 7, the difference between the third embodiment and the first embodiment is that thepressing surface 3 of theneedle core 1 in the third embodiment is an annular surface, the annular surface protrudes from the end of theneedle core 1, and the annular surface is located on theneedle core 1 The position of the outer edge of the end.

采用本实施例时，因针芯1横截面较小，而针芯1的横截面积相比肠管小很多，故而当针芯1的针尖2完全插入肠管上后，凸出针芯1端部的环形面直接抵紧在肠管上，保证压迫面3的环形面基本完全抵在肠管上，有利于提高压迫面3对肠管的整体推移效果。When using this embodiment, because the cross-section of theneedle core 1 is relatively small, and the cross-sectional area of theneedle core 1 is much smaller than that of the intestinal tube, when theneedle tip 2 of theneedle core 1 is completely inserted into the intestinal tube, it protrudes from the end of theneedle core 1 The annular surface of thecompression surface 3 is directly pressed against the intestinal tube to ensure that the annular surface of thecompression surface 3 is basically completely abutted on the intestinal tube, which is beneficial to improving the overall pushing effect of thecompression surface 3 on the intestinal tube.

此外，因本实施例的针芯1相比实施例一和实施例二其针芯1的端部更钝，故而为了方便穿刺针更容易实现腹腔的穿刺，可以在穿刺前在腹腔表面进行破皮，以方便针芯1快速插入，降低穿刺的难度。In addition, because theneedle core 1 of this embodiment is more blunt than the end of theneedle core 1 in the first and second embodiments, in order to facilitate the puncture of the abdominal cavity by the puncture needle, the surface of the abdominal cavity can be punctured before the puncture. The skin is used to facilitate the rapid insertion of theneedle core 1 and reduce the difficulty of puncturing.

以上所述的仅是本实用新型的实施例，方案中公知的具体技术方案和/或特性等常识在此未作过多描述。应当指出，对于本领域的技术人员来说，在不脱离本实用新型技术方案的前提下，还可以作出若干变形和改进，这些也应该视为本实用新型的保护范围，这些都不会影响本实用新型实施的效果和专利的实用性。本申请要求的保护范围应当以其权利要求的内容为准，说明书中的具体实施方式等记载可以用于解释权利要求的内容。What is described above is only the embodiment of the utility model, and the specific technical solutions and/or characteristics and other general knowledge known in the solutions are not described here too much. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, some modifications and improvements can also be made, and these should also be regarded as the protection scope of the utility model, and these will not affect the utility model. Effects of utility model implementation and practicability of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (6)

1. The utility model provides a puncture needle of avoiding intestines tube damage, includes the nook closing member, its characterized in that: the end part of the needle core is provided with a pressing surface which can press the surface of a tissue or an organ, the middle part of the pressing surface is provided with a needle point, and the size of the needle point protruding out of the pressing surface is less than or equal to 1mm.

2. A puncture needle for preventing damage to an intestinal canal according to claim 1, wherein: the pressing surface is a hemispherical surface or a semi-elliptical surface.

3. A puncture needle for preventing damage to an intestinal canal according to claim 1, wherein: the pressing surface is a conical surface, and the conical angle of the conical surface is larger than 120 degrees and smaller than 180 degrees.

4. A puncture needle for preventing damage to an intestinal canal according to claim 1, wherein: the pressing surface is an annular surface which protrudes out of the end part of the needle core.

5. A puncture needle for preventing damage to an intestinal tract according to claim 1, wherein: the size of the needle tip protruding the pressing surface is larger than 0.5mm.

6. A puncture needle for preventing damage to an intestinal tract according to claim 1, wherein: the outer sleeve of the stylet is provided with a guide sheath, and the end part of the guide sheath is provided with a guide surface.

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