Puncture needle with guide structure

Abstract

The utility model relates to a puncture needle with a guide structure, belongs to the technical field of puncture needles, and solves the problems of low butt joint efficiency and difficulty in alignment when a needle tube and a needle core of a puncture needle are inserted in the prior art. The puncture needle comprises a needle core and a needle tube, the needle core comprises a needle core main body, a conical sleeving part and a needle core cap; the needle tube comprises a needle tube main body, a needle tube positioning part and a needle tube sleeving part; a conical sleeving hole is formed in the center of the needle tube sleeving part, and the conical sleeving hole and the conical sleeving part can be clamped with each other; a fan-shaped guide part is arranged on the outer side of the conical sleeving part; a fan-shaped guide groove is formed in the surface of the conical sleeving hole; and the fan-shaped guide part and the fan-shaped guide groove can be clamped with each other, so that the alignment guide is realized when the needle core is sleeved with the needle tube. According to the utility model, the alignment guide when the needle core and the needle tube are inserted is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to puncture needle technical field especially, it relates to a puncture needle with guide structure. BACKGROUND

[0002] Puncture needle is the basic instrument of intervention operation, puncture needle can be divided into hollow puncture needle and core puncture needle according to structure, and can be divided into percutaneous puncture channel needle and percutaneous puncture biopsy needle according to function.Core puncture needle is the common medical instrument in intervention operation and percutaneous puncture drainage, is widely used in various minimally invasive operations, including but not limited to the tissue sampling and injection therapy of kidney, liver, lung, breast, thyroid, prostate, pancreas, uterus, ovary and other organs.Core puncture needle also plays an important role in percutaneous puncture drainage.

[0003] In actual application, the bevel of the needle core end and the port of the needle tube end need to be matched, but in the process of sleeving combination of the needle core and the needle tube of the existing core puncture needle, the angle of the needle core needs to be adjusted to ensure the docking accuracy, which causes unnecessary time consumption in actual use.

[0004] Based on this, the utility model provides a puncture needle with guide structure, realizes the quickness and accuracy of the sleeving process of core puncture needle. UTILITY MODEL CONTENTS

[0005] In view of the above analysis, the utility model aims at providing a puncture needle with guide structure to solve the problems of low docking efficiency and difficult alignment of the needle tube and needle core of the existing core puncture needle.

[0006] The utility model mainly aims at realizing the following technical schemes:

[0007] A puncture needle with guide structure, comprising: needle core and needle tube, the needle core is sleeved in the inside of the needle tube,

[0008] The needle core comprises needle core body, conical sleeving part and needle core cap, the small end of the conical sleeving part is fixedly connected with the needle core body, and the large end of the conical sleeving part is fixedly connected with the needle core cap,

[0009] The needle tube comprises needle tube body, needle tube positioning part and needle tube sleeving part, the needle tube positioning part is arranged below the needle tube sleeving part, the needle tube positioning part is used as the supporting part of finger when the doctor punctures, the center of the needle tube sleeving part is provided with conical sleeving hole, and the conical sleeving hole and the conical sleeving part can be clamped with each other,

[0010] The outer side of the conical sleeve joint part is provided with at least one fan-shaped guide part; the surface of the conical sleeve joint hole is provided with at least one fan-shaped guide groove; the fan-shaped guide part and the fan-shaped guide groove can be clamped with each other, and the alignment guide during the sleeve joint of the needle core and the needle tube is realized.

[0011] Further, two fan-shaped guide parts are symmetrically arranged on the surface of the conical sleeve joint part; correspondingly, two fan-shaped guide grooves are symmetrically arranged on the surface of the conical sleeve joint hole.

[0012] Further, the central angle of the corresponding fan-shaped guide part and the fan-shaped guide groove ranges from 30° to 45°.

[0013] Further, the fan-shaped guide part protrudes from the surface of the conical sleeve joint part, and the upper end of the fan-shaped guide part is wide and the lower end is narrow; correspondingly, the fan-shaped guide groove is recessed in the surface of the conical sleeve joint hole, and the upper end of the fan-shaped guide groove is wide and the lower end is narrow.

[0014] Further, the outer side of the needle core cap is provided with an indicating convex rib for indicating the direction of the end face of the needle core.

[0015] Further, the indicating convex rib is arranged on the outer side of the needle core cap and is consistent with the direction of the inclined end face of the needle core.

[0016] Further, a color is arranged on the surface of the indicating convex rib.

[0017] Further, the outer side of the needle tube sleeve joint part is provided with a mark color indicating strip, and the side corresponding to the opening of the needle tube end is oriented in the same direction; by aligning the indicating convex rib with the indicating strip, the positive positioning sleeve joint of the needle core and the needle tube can be realized.

[0018] Further, the surface of the needle tube body is provided with a scale line for determining the puncture depth of the puncture needle.

[0019] Further, the scale line is symmetrically arranged on the cylindrical surface of the needle tube body.

[0020] The technical scheme of the utility model can at least realize one of the following effects:

[0021] 1. The puncture needle with a guide structure can realize the radial alignment of the needle core and the needle tube during the sleeve joint process of the needle core and the needle tube, so that the axes of the needle core and the needle tube coincide during the insertion of the needle core and the needle tube; at the same time, the fan-shaped guide part and the fan-shaped guide groove can realize the circumferential alignment of the needle core and the needle tube, and compared with the existing sleeve puncture needle, the insertion mode of the needle core and the needle tube is simpler and more convenient, and when medical staff use the puncture needle for puncture, time and energy can be saved.

[0022] 2.The puncture needle with a guide structure of the utility model, through setting up the indication ridge on the surface of the needle core cap, setting up the indication strip on the outside of the needle tube sleeve joint part of the upper end of the needle tube, because the indication ridge and the needle core end face are consistent in direction and the indication strip and the port of the needle tube main body end are consistent in direction, by adjusting the indication ridge and the indication strip consistent in direction, the needle core and the needle tube can be guaranteed to be in the orthotopic state after insertion, which is simple to operate and reliable to use, and does not need to be repeatedly adjusted.

[0023] 3.The puncture needle with a guide structure of the utility model, the scale line is arranged on the outer surface of the needle tube main body, when the medical staff operates (such as biopsy sampling operation), the puncture depth can be observed in real time along with the puncture process, which helps the medical staff to judge the puncture depth and position, and improves the puncture success rate and puncture effect.

[0024] In the utility model, the above technical solutions can be combined with each other to realize more preferred combination solutions. Other features and advantages of the utility model will be described in the subsequent specification, and some advantages can become apparent from the specification or be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the contents specially pointed out in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings are only used for the purpose of showing specific embodiments and are not considered as limiting the utility model, and the same reference signs represent the same parts throughout the drawings.

[0026] Figure 1 It is a structure schematic view of the puncture needle with a guide structure of the utility model;

[0027] Figure 2 It is a structure schematic view of the needle core of the puncture needle with a guide structure of the utility model;

[0028] Figure 3 It is a structure schematic view of the needle tube of the puncture needle with a guide structure of the utility model;

[0029] Figure 4 It is a partial enlarged view of the needle core in the Figure 2

[0030] Figure 5 It is a partial enlarged view of the needle tube in the Figure 3

[0031] Figure 6 It is a needle core and needle tube and sleeve joint state schematic view of the puncture needle with a guide structure of the utility model.

[0032] Reference signs:

[0033] ​​1-needle core; 101-needle core body; 102-tapered sleeve joint part; 103-needle core cap; 104-indication ridge; 105-fan-shaped guide part; 2-needle tube; 201-needle tube body; 202-needle tube positioning part; 203-needle tube sleeve joint part; 204-tapered sleeve joint hole; 205-fan-shaped guide groove; 206-scale line; 207-indication strip. DETAILED DESCRIPTION

[0034] The preferred embodiments of the utility model will be described in detail below with reference to the drawings, wherein the drawings form a part of the utility model and are used together with the embodiments of the utility model to explain the principles of the utility model, and are not used to limit the scope of the utility model.

[0035] Embodiment 1

[0036] One specific embodiment of the utility model discloses a puncture needle with a guide structure, like Figure 1 as shown, comprising: needle core 1 and needle tube 2;The needle core 1 is sleeved in the inside of the needle tube 2.

[0037] As shown in Figure 2 the needle core 1 includes: needle core body 101, tapered sleeve joint part 102 and needle core cap 103;The small end of the needle core body 101 and tapered sleeve joint part 102 are fixedly connected, and the large end of the tapered sleeve joint part 102 is fixedly connected with the needle core cap 103.

[0038] As shown in Figure 3 the needle tube 2 includes: needle tube body 201, needle tube positioning part 202 and needle tube sleeve joint part 203;The needle tube positioning part 202 is arranged below the needle tube sleeve joint part 203, which is used to facilitate supporting and positioning when sleeving the needle core 1 and puncturing, and is used as a supportable part of the doctor's finger when puncturing, to facilitate operation;The center of the needle tube sleeve joint part 203 is provided with a tapered sleeve joint hole 204, and the tapered sleeve joint hole 204 and the tapered sleeve joint part 102 can be clamped with each other.

[0039] Further, at least one fan-shaped guide part 105 is arranged on the outer side of the tapered sleeve joint part 102;At least one fan-shaped guide groove 205 is arranged on the surface of the tapered sleeve joint hole 204;The fan-shaped guide part 105 and the fan-shaped guide groove 205 can be clamped with each other, and the fan-shaped guide groove 205 and the fan-shaped guide part 105 can be gradually clamped when the needle core 1 and the needle tube 2 are sleeved with each other, so that the effect of guiding and aligning is realized during the sleeving process of the needle core 1 and the needle tube 2.

[0040] Preferably, as shown in Figure 4 two fan-shaped guide parts 105 are symmetrically arranged on the surface of the tapered sleeve joint part 102.

[0041] Preferably, as shown in Figure 5As shown in the drawings, the fan-shaped guide groove 205 is symmetrically arranged on the surface of the tapered sleeve joint hole 204.

[0042] Preferably, the central angle of the fan-shaped guide part 105 and the fan-shaped guide groove 205 is 30°-45°.

[0043] In one embodiment of the utility model, as shown in the drawings, Figure 2 , Figure 4 As shown in the drawings, the fan-shaped guide part 105 is arranged protruding from the surface of the tapered sleeve joint part 102, and the upper end of the fan-shaped guide part 105 is wide and the lower end is narrow. Figure 3 , Figure 5 As shown in the drawings, the fan-shaped guide groove 205 is arranged concave in the surface of the tapered sleeve joint hole 204, and the upper end of the fan-shaped guide groove 205 is wide and the lower end is narrow. Figure 6 As shown in the drawings, when the needle core 1 is connected with the needle tube 2, the lower end of the fan-shaped guide part 105 slides into the upper end of the fan-shaped guide groove 205, at this time, the two do not need to be completely aligned, and the needle core 1 and the needle tube 2 can be automatically adjusted to be aligned in the process of gradually clamping the fan-shaped guide part 105 and the fan-shaped guide groove 205, thereby ensuring that the end face of the end of the needle core 1 is aligned with the port of the end of the needle tube 2.

[0044] In one embodiment of the utility model, the outer side of the needle core cap 103 of the needle core 1 of the puncture needle is provided with an indicating rib 104; as shown in the drawings, Figure 2 , Figure 4 As shown in the drawings, the indicating rib 104 is arranged on the outer side of the needle core cap 103 and is consistent with the direction of the inclined end face of the end of the needle core 1; in use, the indicating rib 104 and the opening of the end of the needle tube 2 are aligned in direction, so that the needle core 1 and the needle tube 2 can be connected in the correct position.

[0045] Further, a colored indicating part is arranged on the surface of the indicating rib 104, such as a bright color (red / yellow, etc.).

[0046] In use, under the guidance of the guide structure, it is only necessary to adjust the indicating rib 104 and the end port of the needle tube 2 to be consistent in direction, and the lower end of the fan-shaped guide part 105 can be clamped into the upper end port of the fan-shaped guide groove 205, so that the needle core 1 and the needle tube 2 can be completely aligned after being connected.

[0047] Further, the indicating strip 207 with a clear mark color is arranged on the outer side of the needle tube joint part 203 of the needle tube 2, and the side corresponding to the opening of the end of the needle tube 2 is in the same direction.

[0048] In use, the direction of the spoon-shaped opening at the end of the needle tube 2 can be better understood by the operator of the surgical operation by observing the indication strip 207, and then the correct positioning of the needle core 1 and the needle tube 2 can be achieved by aligning the indication convex rib 104 on the surface of the needle core cap 103 with the indication strip 207 on the surface of the needle tube sleeve 203, so that the end face at the end of the needle core 1 is flush with the port at the end of the needle tube 2.

[0049] In the utility model, the scale line is arranged on the needle tube main body 201 of the needle tube 2, which is used for helping medical staff to determine the depth of the puncture needle into the body. The puncture needle of the utility model can observe the puncture depth in real time during the puncture process, and can help medical staff to determine the puncture depth and position during biopsy sampling and other operations, so that the puncture success rate and puncture effect are improved.

[0050] Preferably, the scale line 206 is symmetrically arranged on the cylindrical surface of the needle tube main body 201.

[0051] In implementation:

[0052] Firstly, the indication convex rib 104 and the indication strip 207 are adjusted to be in the same direction, and it is not required to be completely opposite; then, the needle core main body 101 is inserted into the needle tube 2 until the tapered sleeve portion 102 of the needle core 1 is inserted into the tapered sleeve hole 204 of the tapered sleeve portion 203 at the upper end of the needle tube 2; the needle core 1 and the needle tube 2 are continuously inserted and combined, and the fan-shaped guide portion 105 and the fan-shaped guide groove 205 are gradually clamped, and the fan-shaped guide portion 105 and the fan-shaped guide groove 205 are gradually aligned during the clamping process; finally, when the fan-shaped guide portion 105 and the fan-shaped guide groove 205 are completely clamped, the indication convex rib 104 and the indication strip 207 are aligned, and the inclined end face at the end of the needle core main body 101 and the port at the end of the needle tube main body 201 are aligned, and the needle core 1 and the needle tube 2 are combined.

[0053] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A puncture needle with a guiding structure, characterized in that, The utility model relates to a needle core (1) and needle tube (2) are provided with the conical sleeve joint part (102) and the conical sleeve joint hole (204) of the mutual engagement of the sleeve joint of the needle core (1) and the needle tube (2) is realized, and the needle core (1) and the needle tube (2) are provided with the corresponding fan-shaped guide part (105) and the fan-shaped guide slot (205) of the mutual engagement of the alignment guide of the sleeve joint of the needle core (1) and the needle tube (2) is realized. The utility model relates to a needle core (1) and needle tube (2) are provided with the conical sleeve joint part (102) and the conical sleeve joint hole (204) of the mutual engagement of the sleeve joint of the needle core (1) and the needle tube (2) is realized, and the needle core (1) and the needle tube (2) are provided with the corresponding fan-shaped guide part (105) and the fan-shaped guide slot (205) of the mutual engagement of the alignment guide of the sleeve joint of the needle core (1) and the needle tube (2) is realized. The utility model relates to a needle core (1) and needle tube (2) are provided with the conical sleeve joint part (102) and the conical sleeve joint hole (204) of the mutual engagement of the sleeve joint of the needle core (1) and the needle tube (2) is realized, and the needle core (1) and the needle tube (2) are provided with the corresponding fan-shaped guide part (105) and the fan-shaped guide slot (205) of the mutual engagement of the alignment guide of the sleeve joint of the needle core (1) and the needle tube (2) is realized. The utility model relates to a needle core (1) and needle tube (2) are provided with the conical sleeve joint part (102) and the conical sleeve joint hole (204) of the mutual engagement of the sleeve joint of the needle core (1) and the needle tube (2) is realized, and the needle core (1) and the needle tube (2) are provided with the corresponding fan-shaped guide part (105) and the fan-shaped guide slot (205) of the mutual engagement of the alignment guide of the sleeve joint of the needle core (1) and the needle tube (2) is realized. The utility model relates to a needle core (1) and needle tube (2) are provided with the conical sleeve joint part (102) and the conical sleeve joint hole (204) of the mutual engagement of the sleeve joint of the needle core (1) and the needle tube (2) is realized, and the needle core (1) and the needle tube (2) are provided with the corresponding fan-shaped guide part (105) and the fan-shaped guide slot (205) of the mutual engagement of the alignment guide of the sleeve joint of the needle core (1) and the needle tube (2) is realized. The utility model relates to a needle core (1) and needle tube (2) are provided with the conical sleeve joint part (102) and the conical sleeve joint hole (204) of the mutual engagement of the sleeve joint of the needle core (1) and the needle tube (2) is realized, and the needle core (1) and the needle tube (2) are provided with the corresponding fan-shaped guide part (105) and the fan-shaped guide slot (205) of the mutual engagement of the alignment guide of the sleeve joint of the needle core (1) and the needle tube (2) is realized.

2. The introducer needle of claim 1, wherein, The utility model relates to a needle core (1) and needle tube (2) are provided with the conical sleeve joint part (102) and the conical sleeve joint hole (204) of the mutual engagement of the sleeve joint of the needle core (1) and the needle tube (2) is realized, and the needle core (1) and the needle tube (2) are provided with the corresponding fan-shaped guide part (105) and the fan-shaped guide slot (205) of the mutual engagement of the alignment guide of the sleeve joint of the needle core (1) and the needle tube (2) is realized.

3. The introducer needle of claim 1, wherein, The utility model relates to a needle core (1) and needle tube (2) are provided with the conical sleeve joint part (102) and the conical sleeve joint hole (204) of the mutual engagement of the sleeve joint of the needle core (1) and the needle tube (2) is realized, and the needle core (1) and the needle tube (2) are provided with the corresponding fan-shaped guide part (105) and the fan-shaped guide slot (205) of the mutual engagement of the alignment guide of the sleeve joint of the needle core (1) and the needle tube (2) is realized.

4. The introducer needle of any one of claims 1-3, wherein the needle has a length of about 1.5 inches to about 2.5 inches. The utility model relates to a needle core (1) and needle tube (2) are provided with the conical sleeve joint part (102) and the conical sleeve joint hole (204) of the mutual engagement of the sleeve joint of the needle core (1) and the needle tube (2) is realized, and the needle core (1) and the needle tube (2) are provided with the corresponding fan-shaped guide part (105) and the fan-shaped guide slot (205) of the mutual engagement of the alignment guide of the sleeve joint of the needle core (1) and the needle tube (2) is realized.

5. The introducer needle of claim 1, wherein, The utility model relates to a needle core (1) and needle tube (2) are provided with the conical sleeve joint part (102) and the conical sleeve joint hole (204) of the mutual engagement of the sleeve joint of the needle core (1) and the needle tube (2) is realized, and the needle core (1) and the needle tube (2) are provided with the corresponding fan-shaped guide part (105) and the fan-shaped guide slot (205) of the mutual engagement of the alignment guide of the sleeve joint of the needle core (1) and the needle tube (2) is realized.

6. The introducer needle of claim 5, wherein the needle has a tapered tip. ​ 7. The introducer needle of claim 6, wherein the needle has a tapered tip. ​ 8. The introducer needle of any of claims 5-7, wherein the needle has a tapered tip. ​ 9. The introducer needle of claim 1, wherein, ​ 10. The introducer needle of claim 9, wherein the needle has a tapered tip. ​

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