CN217828603U - A kind of nodule positioning guidewire assembly - Google Patents

Abstract

The utility model discloses a nodule positioning guide wire assembly, comprising: a positioning guide wire, a puncture needle sheath and a positioning piece. Wherein: one end of the positioning guide wire has a barb, the puncture needle sheath is a straight tubular structure with a puncture end, and after the positioning guide wire is inserted into the lumen of the puncture needle sheath, the opening degree of the barb is compressed and becomes smaller . The positioning member has an opening through which the puncture needle sheath passes, and the positioning member includes a base layer and a positioning layer; wherein: the base layer has an adhesive layer that can be pasted on the skin, and the positioning layer is detachably bonded on the base layer and used to fix the part of the positioning guide wire exposed outside the skin. The positioning guide wire needle assembly of the utility model has the characteristics of accurate positioning of small superficial nodules, not easy to shift, easy to find during operation, small surgical trauma, simple and convenient operation, and can effectively and accurately remove lesions.

Description

A kind of nodule positioning guide wire assembly

technical field

The utility model relates to the technical field of medical devices, in particular to a nodule positioning guide wire assembly.

Background technique

The information disclosed in the background technology of the utility model is only intended to increase the understanding of the general background of the utility model, and is not necessarily regarded as an acknowledgment or in any form to imply that the information constitutes the prior art known to those skilled in the art .

In clinical practice, tumors with a large volume and a diameter ≥ 3 cm that can be touched in superficial parts are usually called tumors, and conversely, tumors that are not palpable in clinical practice but need to be detected by imaging examinations are called nodules. Clinically palpable masses can be judged benign or malignant by various advanced imaging examination techniques, such as CT, MRI enhanced examination, contrast-enhanced ultrasound or ultrasonic light scattering tomography and other imaging examinations to judge the benignity and malignancy of larger masses. However, it is sometimes difficult to diagnose benign and malignant small nodules that are not clinically palpable using imaging techniques. In order to solve possible hidden dangers, it is necessary for clinicians to perform surgical resection of target nodules to clarify their nature. In practice, due to the small size of the nodules, it is impossible to accurately locate them by observation or palpation during the operation, and the failure rate of the operation is high. In particular, how to accurately resect the nodules after discovery, experts from major hospitals have tried various methods to accurately locate the nodules and then resect them, but there are certain defects. The following are temporary methods currently used by doctors, but none of them are specific methods or means for nodule localization.

At present, the localization methods of superficial small nodules mainly include: (1) Injection of biological dyes. Preoperatively through puncture to reach the lesion and inject biological dye. During the operation, observe the color change of the lesion tissue to locate, such as breast nodules. Relatively loose, liquid methylene blue is easy to disperse and cannot accurately locate the nodules. (2) Traditional nodule positioning guide wire. The traditional nodule positioning guide wire is soft and the positioning process is more difficult. After the positioning is completed, the excess part of the guide wire on the body surface cannot be effectively fixed, and it is easy to shift or decouple, making the positioning inaccurate.

Utility model content

Aiming at the shortcomings of traditional nodule positioning, the utility model provides a guide wire assembly suitable for superficial small nodule positioning to achieve accurate positioning, not easy to shift and unhook, and convenient for surgery. In order to achieve the above object, the technical scheme of the utility model is as follows.

A nodule positioning guide wire assembly, comprising: a positioning guide wire, a puncture needle sheath and a positioning piece. Wherein: one end of the positioning guide wire has a barb, the puncture needle sheath is a straight tubular structure with a puncture end, and after the positioning guide wire is inserted into the lumen of the puncture needle sheath, the opening degree of the barb is compressed and becomes smaller . The positioning member has an opening through which the puncture needle sheath passes, and the positioning member includes a base layer and a positioning layer; wherein: the base layer has an adhesive layer that can be pasted on the skin, and the positioning layer is detachably bonded on the base layer and used to fix the part of the positioning guide wire exposed outside the skin. The base layer has a gap pointing to the center of the positioning element.

Further, the angle between the barb and the positioning guide wire is 0-30°.

Further, after the barb is deployed, the included angle relative to the positioning guide wire is 1-30°.

Further, the surface of the positioning guide wire has an ultrasound imaging coating. Preferably, the ultrasonic imaging coating is provided with a scale along the length direction of the positioning guide wire.

Further, the barb is a bent part of the positioning guide wire, that is, the barb and the positioning guide wire are an integral structure.

Further, the puncture needle sheath includes: a puncture needle tube and a needle tube base, and one end of the puncture needle tube is a bevel-shaped tip. The needle tube base is fixed on the other end of the puncture needle tube, and the needle tube base has a guide wire inlet communicating with the lumen of the puncture needle tube. Preferably, the guidewire inlet base is funnel-shaped.

Further, the adhesive layer is fixed on the lower surface of the base layer, and the outer surface of the base layer is covered with an isolation film. When in use, the adhesive layer is bonded on the skin surface after the isolation film is peeled off.

Further, the upper surface of the base layer has a hook or a hook, and the lower surface of the positioning layer has a hook or a hook, so that the two can be detachably connected.

Further, it also includes a dehook sheath, and a needle hole is provided on one end surface of the dehook sheath, so as to ensure that when the positioning guide wire is withdrawn, the barb can completely withdraw from the target nodule.

Further, the decoupling needle sheath includes a decoupling needle tube and a needle tube base, the needle tube base is fixed on the lower end port of the decoupling needle tube, and the needle tube base has a tapered through hole for the positioning guide wire to pass through; the upper end of the decoupling needle tube The end surface is in the shape of an arc groove, and a pinhole is formed in the center of the bottom surface of the groove, and the diameter of the pinhole is larger than the diameter of the positioning guide wire.

Compared with the prior art, the utility model has the following beneficial effects: the positioning guide wire assembly of the utility model has the advantages of accurate positioning for superficial nodules, not easy to shift, easy to find during operation, less surgical trauma, simple and convenient operation , can effectively and accurately remove the characteristics of the lesion. At the same time, the utility model can not only realize the fixation of the positioning guide wire, but also indicate the position of the target nodule by setting the positioning member with a specific structure. At the same time, such a positioning member does not affect the removal of the positioning part from it again.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model.

FIG. 1 is a schematic structural view of a nodule positioning guide wire assembly in an embodiment of the present invention.

Fig. 2 is a cross-sectional view of the positioning member in the embodiment of the present invention.

Fig. 3 is a schematic structural view of the positioning member in the embodiment of the utility model.

Fig. 4 is a schematic structural view of the unhooking needle sheath in the embodiment of the utility model.

Fig. 5 is a structural schematic diagram of unhooking by using the unhooking needle sheath in the embodiment of the utility model.

The marks in the figure represent: 1-positioning guide wire, 1.1-barb, 2-puncture needle sheath, 2.1-puncture needle tube, 2.2-needle tube base, 3-positioning piece, 3.1-base layer, 3.2-positioning layer, 3.3-glue Adhesive layer, 3.4-Isolation film, 3.5-Grasp hook, 3.6-Hook, 3.7-Notch, 4-Unhook needle sheath, 4.1-Unhook needle tube, 4.2-Needle tube base, 4.3-Needle hole, 5-Target nodule.

Detailed ways

It should be pointed out that the following detailed descriptions are all exemplary and are intended to provide further description of the present utility model. Unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

For the convenience of description, if the words "up", "down", "left" and "right" appear in the utility model, it only means that it is consistent with the up, down, left and right directions of the drawings themselves, and does not limit the structure. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element needs to have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Further description will now be given in conjunction with the accompanying drawings and specific embodiments of the specification.

Referring to FIG. 1 , a nodule positioning guide wire assembly is illustrated, including: a positioning guide wire 1 , a puncture needle sheath 2 and a positioning member 3 . in:

The positioning guide wire 1 is a long guide wire, and different lengths of the positioning guide wire 1 can be selected according to the thickness of the subcutaneous soft tissue and the position depth of the target nodule 5 for each patient. The positioning guide wire 1 is made of medical stainless steel metal; the inner diameter of the positioning guide wire 1 can be 0.5mm, 0.6mm, 0.7mm, etc., and other suitable specifications can also be selected according to the needs, which is different from the inner diameter of the puncture needle sheath. size to match. The barb 1.1 is about 2cm in length. The length needs to meet the needs of entering superficial target nodules 5 under the guidance of ultrasound and CT, and generally at least 20 cm is required. Therefore, the total length of the positioning guide wire 1 can be selected from specifications such as 20 cm and 30 cm.

The upper end of the positioning guide wire 1 has a barb 1.1, and the barb 1.1 is a bent part of the positioning guide wire 1, that is, the barb 1.1 and the positioning guide wire 1 are of an integral structure so that the barb 1.1 is relative to the positioning guide wire. The wire 1 has a certain degree of elasticity, and it is convenient to change the size of the opening of the barb 1.1. The length of the barb 1.1 can be selected according to needs, such as 1cm~5cm. This kind of elastic barb 1.1 can be compressed and the opening becomes smaller and enters the puncture needle sheath 2. After the barb 1.1 further reaches the target nodule 5, it will automatically open again, and can maintain the set clip between the positioning guide wire 1 The angle is firmly fixed at the target nodule 5 without displacement; finally, it can bear a certain pulling force during the operation without deformation and displacement.

The puncture needle sheath 2 is a straight tubular structure with a puncture end, and the puncture needle sheath is used to puncture and locate the target nodule 5 during the puncture positioning process. After the positioning guide wire 1 is inserted into the lumen of the puncture needle sheath 2, the opening degree of the barb 1.1 is compressed and becomes smaller. The length of the puncture needle sheath 2 is shorter than the length of the positioning guide wire 1, so that part of the positioning guide wire 1 is reserved on the outer wall of the target nodule 5, so that the positioning guide wire 1 can be fixed conveniently, and the positioning guide wire 1 cannot be moved after positioning. Bit & Barb 1.1 Unhook. Optionally, the total length of the puncture needle sheath 2 is two specifications of 10 mm and 20 mm, and the inner diameter of the puncture needle sheath is 0.5 mm, 0.6 mm, 0.7 mm, etc., so as to match the above-mentioned positioning guide wire 1 .

Referring to Figures 2 and 3, the positioning member 3 includes a base layer 3.1 and a positioning layer 3.2; wherein: the base layer 3.1 has an adhesive layer 3.3 (such as double-sided tape, etc.) that can be pasted on the skin, and the The adhesive layer 3.3 is fixed on the lower surface of the base layer 3.1, and the positioning layer 3.2 is used to fix the part of the positioning guide wire 1 exposed outside the skin. The upper surface of the base layer 3.1 has grabbing hooks 3.5, and the lower surface of the positioning layer 3.2 has hooks 3.6, so that the base layer 3.1 and the positioning layer 3.2 can be detachably connected. The positioning layer 3.2 is made of medical 3M gauze. The adhesive layer 3.3 is fixed on the lower surface of the base layer 3.1, and the outer surface of the base layer 3.1 is covered with an isolation film 3.4. The base layer 3.1 has a notch 3.7 pointing to the center of the locator, which has the functions of providing a channel for the tail end of the positioning guide wire 1 to be fixed and indicating the position of the target nodule 5 .

When in use, peel off the isolation film 3.4 and stick the adhesive layer 3.3 on the skin surface, and point the gap 3.7 to the position of the target nodule 5 . Then put the tail end of the positioning guide wire 1 outside the skin on the base layer 3.1 from the gap 3.7, so that the tail end of the positioning guide wire 1 passes through the center of the base layer 3.1 and extends to the opposite side of the gap 3.7, and finally use The positioning layer 3.2 compresses and fixes the tail end of the positioning guide wire 1 on the base layer 3.1, and the positioning guide wire 1 prevents decoupling.

When using the nodule positioning guide wire assembly of this embodiment to locate superficial small nodules, firstly, under the guidance of ultrasound or CT, the target nodule 5 lesion is punctured with the puncture needle sheath 2, and then the positioning guide wire 1 is inserted from the puncture needle sheath 2. The end is inserted into the needle sheath. Since the barb 1.1 is squeezed by the inner wall of the puncture needle sheath 2, the opening of the barb 1.1 relative to the positioning guide wire 1 becomes smaller. In this state, the positioning guide wire 1 and the barb The hook 1.1 moves along the lumen of the puncture needle sheath 2 all the way into the target nodule 5, and the barb 1.1 opens. Optionally, the initial angle between the barb 1.1 and the positioning guide wire 1 can be 0°, and the barb 1.1 can bounce off after entering the target nodule 5. At this time, the angle between the barb 1.1 and the positioning guide wire The included angle is any angle between 1°-30°. After the barb 1.1 enters the target nodule 5, the puncture needle sheath 2 is withdrawn, so that the barb 1.1 is fixed near the target nodule 5, and the location of the target nodule 5 is realized. And the tail of the positioning guide wire 1 is on the skin surface, and the body surface is fixed with the positioning member 3 to prevent decoupling. The positioning guide wire 1 can guide the surgeon to find the position of the barb. The surgeon incises the subcutaneous tissue along the positioning guide wire 1, and then partially removes the target nodule 5 near the barb 1.1 to reduce surgical trauma and accurately remove the lesion.

Continuing to refer to FIG. 1 , in another preferred embodiment, the puncture needle sheath 2 includes a puncture needle tube 2.1 and a needle tube base 2.2, and one end of the puncture needle tube 2.1 is a beveled tip. The needle tube base 2.2 is fixed on the other end of the puncture needle tube 2.1, and the needle tube base 2.2 has a guide wire inlet communicating with the lumen of the puncture needle tube 2.1, and the guide wire inlet base is funnel-shaped so that the guide wire can be positioned 1 It is more convenient to enter the puncture needle sheath.

In another preferred embodiment, the surface of the positioning guide wire 1 has an ultrasound imaging coating to enhance its display rate on ultrasound equipment.

In another preferred embodiment, the ultrasonic imaging coating is provided with a scale along the length direction of the positioning guide wire 1, and the scale starts from the front end of the positioning guide wire 1, and a scale is marked every 1 cm, which is convenient for prompting The surgeon positions the penetration depth of the guide wire 1 .

In another preferred embodiment, the upper surface of the positioning layer 3 .

In another preferred embodiment, the nodule positioning guide wire assembly illustrated in the above embodiments further includes a dehook needle sheath 4 to ensure that the barb can completely withdraw from the target nodule 5 when the positioning guide wire is withdrawn. After the puncture positioning is completed, the smooth flat-end unhook needle sheath is used to release the positioning guide wire after positioning. Optionally, the total length of the unhooking needle sheath 4 is divided into 10mm, 20mm and the like. Referring to Fig. 4 and Fig. 5, the decoupling needle sheath 4 includes a decoupling needle tube 4.1 and a needle tube base 4.2. Tapered through hole. The top end surface of the decoupling needle tube 4.1 is in the shape of an arc groove, and the center of the bottom surface of the groove has a pinhole 4.3, and the diameter of the pinhole is larger than the diameter of the positioning guide wire 1, which can help to extract the nodules that have been positioned on the target nodules. Positioning guide wire 1 in 5, to ensure that when the positioning guide wire is withdrawn, the barb can completely withdraw from the target nodule 5.

Referring to Fig. 4 and Fig. 5, when in use, first pass the tail end of the positioning guide wire 1 through the needle hole 4.3 through the unhooking needle tube 4.1, then pull the tail end of the positioning guide wire 1 with one hand, and hold the unhooking needle tube 4.1 with the other hand. Its top reaches the target nodule 5 along the positioning guide wire 1, and under the constraint of the pinhole, the barb 1.1 is straightened and enters the decoupling needle tube 4.1 to realize positioning and decoupling, and the positioning guide wire can be taken out.

Finally, it should be noted that any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model. Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (10)

1. A nodule positioning guidewire assembly, characterized in that it comprises: a positioning guidewire, a puncture needle sheath and a locator; wherein: one end of the positioning guidewire has a barb, and the puncture needle sheath has a puncture end Straight tubular structure, and after the positioning guide wire is inserted into the lumen of the puncture needle sheath, the opening of the barb is compressed and becomes smaller; the positioning part has an opening for the puncture needle sheath to pass through, and the positioning part includes a base layer and a positioning layer; wherein: the base layer has an adhesive layer that can be pasted on the skin, the positioning layer is detachably bonded to the base layer, and the base layer has a gap pointing to the center of the positioning piece. 2. The nodule positioning guide wire assembly according to claim 1, wherein the angle between the barb and the positioning guide wire is 0-30°; preferably, the barb is deployed relative to The included angle of positioning guide wire is 1~30°. 3 . The nodule localization guide wire assembly according to claim 1 , wherein the surface of the localization guide wire has an ultrasound imaging coating. 4 . 4 . The nodule positioning guide wire assembly according to claim 3 , wherein a scale is provided on the ultrasonic imaging coating along the length direction of the positioning guide wire. 5 . The nodule positioning guide wire assembly according to claim 1 , wherein the barb is a bent part of the positioning guide wire. 6. The guide wire assembly for nodule positioning according to claim 1, wherein the puncture needle sheath comprises: a puncture needle tube and a needle tube base, one end of the puncture needle tube is a bevel-shaped tip; the needle tube base is fixed on The other end of the puncture needle tube, and the base of the needle tube has a positioning guide wire inlet communicating with the lumen of the puncture needle tube; the base of the positioning guide wire inlet is funnel-shaped. 7. The guidewire assembly for nodule positioning according to claim 1, wherein the adhesive layer is fixed on the lower surface of the base layer, and the outer surface of the base layer is covered with an isolation film. 8 . The guide wire assembly for nodule positioning according to claim 1 , wherein the upper surface of the base layer has a hook or a hook, and the lower surface of the positioning layer has a hook or a hook. 9 . 9. The nodule positioning guide wire assembly according to any one of claims 1-8, further comprising a decoupling needle sheath, and a needle hole is formed on one end surface of the decoupling needle sheath. 10. The guide wire assembly for nodule positioning according to claim 9, wherein the decoupling needle sheath comprises a decoupling needle tube and a needle tube base, the needle tube base is fixed on the lower port of the decoupling needle tube, and the needle tube base has A tapered through hole for the positioning guide wire to pass through; the upper end surface of the unhooking needle tube is in the shape of an arc-shaped groove, and the center of the bottom surface of the groove has a pinhole, and the diameter of the pinhole is larger than the diameter of the positioning guide wire.

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