CN218419993U - Puncture needle for breast positioning - Google Patents

Abstract

The application relates to a puncture needle for locating mammary gland, which consists of a locating wire and a guide needle, wherein the locating wire comprises a guide wire and a locating hook arranged at the far end of the guide wire, the guide needle comprises a needle tube and a handle fixedly connected with the near end of the needle tube, the guide needle is used for accommodating the locating wire in the needle tube, a rear end marking sleeve is arranged on the near end part of the guide wire, and a locating marking sleeve is arranged on the far end part of the guide wire. The puncture needle has small incision, strong anchoring force, accurate positioning and difficult displacement.

Description

Puncture needle for positioning mammary gland

Technical Field

The application relates to the field of medical equipment, in particular to a puncture needle for breast positioning.

Background

In recent years, with the progress of comprehensive diagnosis and treatment level of breast cancer in China, the survival rate of breast cancer is increased year by year, and the improvement of the early diagnosis rate of breast cancer through breast cancer screening is an important measure for improving the prognosis of breast cancer and reducing the death rate of breast cancer. In clinical application, breast lesions are usually negative in palpation by clinicians due to their diminution, resulting in difficulty in surgical treatment and false negative result in pathological sampling. The breast positioning needle is a positioning method aiming at the situation, carries out lesion puncture under the guidance of ultrasound or X-ray, reserves a guide wire at a lesion part, and guides a surgeon to carry out surgical excision and pathology sampling on suspicious malignant lesions. The puncture positioning method under the guidance of the imaging has higher safety, accuracy and application value, and belongs to a high-level diagnosis means in early diagnosis of breast cancer by cutting off tiny benign breast diseases. Current pjncture needle seal wire is mostly double-stranded stainless steel wire and makes through the transposition, and the location hook broad, the operation incision is great, and appears the anchoring power inadequately easily, leads to the phenomenon of unhook, and this can cause secondary damage to the human body. In addition, in order to facilitate positioning, most of the existing puncture needles design the back half part of the guide wire of the puncture needle as a dyed positioning line, however, the positioning line is not clearly displayed under X-ray or ultrasound, so that positioning is not accurate and repositioning is needed.

Disclosure of Invention

In order to solve the problems existing in the prior art, the utility model designs a puncture needle for positioning mammary gland, which has small incision, strong anchoring force, accurate positioning and difficult displacement.

The technical scheme adopted by the application for solving the problems is as follows:

a puncture needle for locating a breast consists of a locating wire and a guide needle, wherein the locating wire comprises a guide wire and a locating hook arranged at the distal end of the guide wire, the guide needle comprises a needle tube and a handle fixedly connected with the proximal end of the needle tube, and the guide needle is used for accommodating the locating wire in the needle tube.

The application can also solve the problems in the prior art through the following technical scheme:

in one embodiment, the needle tube is in clearance fit with the positioning wire, and the needle tube is in interference fit with the positioning hook.

In one embodiment, the trailing end marker cannula and the positioning marker cannula are both fixedly connected to the guidewire.

In a preferred embodiment, the rear end marker sleeve and the positioning marker sleeve are fixedly connected with the guide wire through a dripping glue.

In one embodiment, the guide wire is integrally formed with the positioning hook.

In one embodiment, a push sleeve is disposed on the positioning wire for enhancing the pushing performance of the positioning wire in the introducer needle.

In a preferred embodiment, the push sleeve is disposed between the rear marker sleeve and the positioning marker sleeve.

In a preferred embodiment, the pushing sleeve is fixedly connected with the guide wire through a dripping glue.

In one embodiment, the needle tube is provided with graduations capable of being developed, and the graduations are displayed more clearly and visually under X-ray or ultrasonic, so that a doctor can conveniently position the graduations.

In a preferred embodiment, the graduation marks are fixed on the needle tube by means of corrosion marking.

In one embodiment, the positioning hook is a double hook structure.

In one embodiment, the positioning hook comprises a fixed core filament, a first hook filament and a second hook filament, the fixed core filament being cross-wound with the guide wire, the distal end of the fixed core filament being heat set to form the first hook filament and the second hook filament.

In one embodiment, the guide wire and the positioning hook are made of nitinol wire.

Compared with the prior art, the method has the following advantages:

(1) The utility model discloses fixedly connected with rear end mark sleeve pipe, location mark sleeve pipe and propelling movement sleeve pipe on the seal wire will develop function and propelling movement function separately, have strengthened the propelling movement performance of location silk in the guide pin, have strengthened the location operating performance of product.

(2) The utility model discloses a location hook is designed for the double hook structure, under the prerequisite of guaranteeing the anchoring force, has reduced the width, reduces the operation incision.

(3) The utility model discloses the scale mark that can develop of fixed distance has been set up on the needle tubing for the needle tubing shows more clearly, directly perceived under X-ray or supersound, makes things convenient for the doctor to fix a position the focus.

(4) The utility model discloses a seal wire and location hook adopt nickel titanium memory alloy silk as raw and other materials, and the location hook that the nickel titanium silk was made has good memory, can resume rapidly after the release, and biological affinity is good, can take in the syringe needle when not using intraductally, has both guaranteed the anchoring force, has protected the location hook not to receive the damage again.

Drawings

Fig. 1 is a schematic view of the overall structure of the puncture needle of the present invention.

Fig. 2 is a schematic structural diagram of an embodiment of the positioning wire of the present invention.

Fig. 3 is a schematic structural view of an embodiment of the introducer needle of the present invention.

Fig. 4 is a schematic view of the distal end portion of the positioning wire of the present invention.

Fig. 5 is a schematic structural view of another embodiment of the positioning wire of the present invention.

Fig. 6 is a schematic structural view of another embodiment of the introducer needle of the present invention.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present application, specific embodiments thereof will now be described in detail with reference to the accompanying drawings:

example one

The utility model discloses a pjncture needle for mammary gland location, as shown in fig. 1, by location silk 1 and guide needle 2 constitution, as shown in fig. 2, location silk 1 includes seal wire 11 and sets up the location hook 14 of seal wire distal end, in an embodiment, seal wire 11 with location hook 14 integrated into one piece, in an embodiment, seal wire 11 is fixed through heat treatment design with location hook 14. As shown in fig. 3, the introducer needle 2 includes a needle tube 22 and a handle 21 fixedly connected to a proximal end of the needle tube 11, the handle 21 and the needle tube 22 are fixedly connected by dropping glue, the introducer needle 2 accommodates the positioning wire 1 in the needle tube 11, the needle tube 11 is in clearance fit with the positioning wire 1, the needle tube 11 is in interference fit with the positioning hook 14, so that the positioning wire 1 does not fall off in the introducer needle 2, and the positioning wire 1 can move smoothly in the needle tube 22. As shown in fig. 2, a rear end marker sleeve 12 is fixedly connected to a proximal end portion of the guide wire 11, a positioning marker sleeve 13 is fixedly connected to a distal end portion of the guide wire 11, and the rear end marker sleeve 12 and the positioning marker sleeve 13 are fixedly connected to the guide wire 11. In a preferred embodiment, the rear marker sleeve 12 and the positioning marker sleeve 13 are fixedly connected to the guide wire 11 by dropping glue. The rear end marking sleeve 12 and the positioning marking sleeve 13 play a role in positioning, and the pushing sleeve 15 plays a role in enhancing the pushing performance, so that the product can be positioned without an additional pushing device.

In one embodiment, as shown in FIG. 4, the positioning hook 14 is a double hook structure. In a preferred embodiment, the positioning hook 14 includes a fixing core filament 141, a first hook filament 142 and a second hook filament 143, the fixing core filament 141 is cross-wound with the guide wire 11, and a distal end of the fixing core filament 141 is heat-set to form the first hook filament 142 and the second hook filament 143.

In one embodiment, the guide wire 11 and the positioning hook 14 are made of nitinol wire that is heat treated to remove stress. The positioning hook 14 made of nickel titanium wires has good memory and biocompatibility, can be taken into the needle tube 22 when not in use, and can be quickly restored to be positioned after being released, so that the positioning hook 14 is protected from being damaged. The double hook structure of the positioning hook 14 can reduce the width and the operation incision on the premise of ensuring the anchoring force.

In one embodiment, a needle tip bevel indicator 24 is disposed on the handle 21, and the indication direction of the needle tip bevel indicator 24 is the same as the needle tip direction of the needle tube 22.

During the operation, the positioning wire 1 is put into the needle tube 22, the focus is positioned under the assistance of X-ray or ultrasonic, the needle tube 22 is inserted into the breast, the tip bevel opening of the needle tube 22 faces the focus, the needle tip is placed on the focus of the breast by using the scale mark, the positioning wire 1 is held and is not moved, the needle tube 22 is withdrawn, until the boundary line of the rear end mark sleeve 12 on the positioning wire 1 close to the tail end is aligned with the tail end of the handle 21, the positioning hook 14 at the head end of the positioning wire is released from the needle tube 22, and the positioning hook 14 is unfolded due to the memory of the nickel-titanium wire, so that the anchoring is completed. The needle cannula 22 is removed and the location of the locating hook is confirmed using X-ray or ultrasound.

Example two

The structure of this embodiment is substantially the same as that of the first embodiment, except that: as shown in fig. 5, a push sleeve 15 is disposed on the positioning wire 1 for enhancing the pushing performance of the positioning wire 1 in the introducer needle 1. In a preferred embodiment, the push sleeve 15 is disposed between the rear marker sleeve 12 and the positioning marker sleeve 13, and the push sleeve 15 is fixedly connected to the guide wire 1 by dropping glue. The existing products are mostly integrated with the developing and positioning functions on the pushing device, so that the developing and positioning functions are difficult to position in the pushing process, difficult to adjust in the positioning process and prone to causing inaccurate positioning. The utility model discloses fixedly connected with rear end mark sleeve pipe 12, location mark sleeve pipe 13 and propelling movement sleeve pipe 15 on the seal wire 11 will develop the function and push function separately, have strengthened the propelling movement performance of location silk 1 in guide needle 2, have strengthened the location operating performance of product.

In one embodiment, as shown in fig. 6, a visualized graduation line 23 is arranged on the needle tube 22, and the graduation line 23 is displayed more clearly and intuitively under the X-ray or ultrasonic, so that a doctor can conveniently position a focus. In a preferred embodiment, the graduation marks 23 are affixed to the needle cannula 22 by means of corrosion marking. The graduation marks are spaced apart from each other by a fixed distance.

In the operation process, the positioning wire 1 is collected in the needle tube 22, the focus is positioned under the assistance of X-ray or ultrasonic, the needle tube 22 is inserted into the breast, in the embodiment with the needle point bevel indicating mark, the bevel opening of the needle point is inserted towards the focus by using the needle point bevel indicating mark, the needle point can be placed on the breast focus by using the scale mark, or the position of the developing scale mark 23 is observed by X-ray images to judge whether the focus is the focus. Holding the positioning wire 1 still, withdrawing the needle tube 22 until the boundary line of the rear end marking sleeve 12 on the positioning wire 1 close to the tail end is aligned with the tail end of the handle 21, releasing the positioning hook 14 at the head end of the positioning wire from the needle tube 22, and finishing anchoring when the positioning hook 14 is in a released state (namely, the positioning hook 14 is unfolded due to the memory of the nickel-titanium wire). The needle cannula 22 is removed and the position of the locating hook 14 is confirmed by X-ray or ultrasound.

The above description of the present invention is intended to enable persons skilled in the art to understand the contents of the present invention and to implement the present invention without limiting the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the present invention.

Claims (10)

1. A puncture needle for locating a breast consists of a locating wire and a guide needle, wherein the locating wire comprises a guide wire and a locating hook arranged at the distal end of the guide wire, the guide needle comprises a needle tube and a handle fixedly connected with the proximal end of the needle tube, and the guide needle is used for accommodating the locating wire in the needle tube.

2. The puncture needle for breast positioning according to claim 1, wherein the needle tube is in clearance fit with the positioning wire, and the needle tube is in interference fit with the positioning hook.

3. The puncture needle for breast positioning according to claim 1, wherein the rear end marker sleeve and the positioning marker sleeve are fixedly connected to the guide wire.

4. The puncture needle for breast positioning according to claim 1, wherein the guide wire is integrally formed with the positioning hook.

5. The puncture needle for breast positioning according to claim 1, wherein a push sleeve is provided on the positioning wire for enhancing the pushing performance of the positioning wire in the introducer needle.

6. The puncture needle for breast positioning according to claim 5, wherein the push sleeve is disposed between the rear end marker sleeve and the positioning marker sleeve.

7. A puncture needle for breast positioning according to claim 1, wherein a graduations capable of being visualized is provided on the needle tube.

8. The needle of claim 7 wherein the graduations are affixed to the needle tube by corrosion marking.

9. The puncture needle for breast positioning according to claim 1, wherein the positioning hook has a double hook structure.

10. The puncture needle for breast positioning according to claim 9, wherein the positioning hook comprises a fixing core wire, a first hook wire and a second hook wire, the fixing core wire is wound crosswise with the guide wire, and a distal end of the fixing core wire is heat-set to form the first hook wire and the second hook wire.

Images