Mammary gland puncture positioning needle

Abstract

The utility model discloses a mammary gland puncture positioning needle. The mammary gland puncture positioning needle comprises a positioning wire used for positioning, a fixing sleeve used for fixing the positioning wire, a locking sleeve used for changing the state of the fixing sleeve and a puncture needle used for puncturing, the fixing sleeve has a fixed state and an unlocked state, the locking sleeve is arranged on the fixing sleeve in a sliding mode, and the puncture needle is arranged on the locking sleeve. The fixing sleeve is provided with a locking position and an unlocking position, the locking sleeve is arranged on the fixing sleeve, the locking sleeve can move back and forth between the locking position and the unlocking position on the fixing sleeve, and the locking sleeve moves between the locking position and the unlocking position so that the fixing sleeve can be switched between the fixed state and the unlocking state. When the locking sleeve is located at the locking position, the fixing sleeve is in a fixed state, and when the locking sleeve is located at the unlocking position, the fixing sleeve is in an unlocked state. According to the breast puncture positioning needle, the position of the positioning wire can be adjusted at will.

Description

Technical Field

[0001] This utility model relates to the field of breast nodule localization technology, and in particular to a breast puncture localization needle. Background Technology

[0002] With the widespread adoption of breast cancer screening, approximately 70% to 80% of women have breast nodules of varying degrees. Breast nodules are primarily caused by poor lifestyle habits and a poor mental state. For example, people who frequently stay up late disrupt their body's biological clock, affecting the normal function of the endocrine system and leading to hormonal imbalances, particularly an imbalance in the ratio of estrogen to progesterone, thus increasing the risk of breast disease. Those who prefer high-calorie, high-fat, and high-sugar diets, such as fried chicken, milk tea, and cakes, will experience elevated levels of body fat and estrogen, which can stimulate breast tissue and increase the risk of breast disease. People under chronic stress experience tension, anxiety, and depression, which can affect the endocrine system, causing abnormal estrogen secretion and increasing the likelihood of breast disease.

[0003] When breast nodules are small, surgeons often find it difficult to locate them during surgery. Therefore, preoperative localization of the nodules is usually performed to ensure complete removal. When marking breast lesions, a breast biopsy localization needle is typically used. The needle is inserted under ultrasound guidance, and a localization wire inside the needle is withdrawn after the puncture is complete, remaining at the lesion site. This allows for rapid localization of the lesion during surgery. However, in the "Breast Nodule Localization Device" disclosed in publication number CN221617198U, the localization wire is pushed a fixed distance each time and cannot remain at arbitrary positions. This necessitates considering the position of the puncture needle during localization, making adjustments to the localization wire's position cumbersome. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a breast puncture positioning needle that can infinitely adjust the position of the positioning wire.

[0005] To address the aforementioned problems, this utility model provides a breast biopsy positioning needle. The breast biopsy positioning needle includes a positioning wire for positioning, a fixing sleeve for fixing the positioning wire, a locking sleeve for changing the state of the fixing sleeve, and a puncture needle for puncture. The fixing sleeve has a fixed state and an unlocked state. The locking sleeve is slidably disposed on the fixing sleeve and has a locked position and an unlocked position. The locking sleeve is located on the fixing sleeve and can move back and forth between the locked and unlocked positions on the fixing sleeve. The movement of the locking sleeve between the locked and unlocked positions allows the fixing sleeve to switch between the fixed and unlocked states. When the locking sleeve is in the locked position, the fixing sleeve is in the fixed state; when the locking sleeve is in the unlocked position, the fixing sleeve is in the unlocked state.

[0006] Furthermore, the fixing sleeve has a clamping claw, on which a first positioning groove and a second positioning groove are provided, and the locking sleeve has a pressing part for pressing the clamping claw, and the first positioning groove and the second positioning groove are adapted to each other; when the pressing part is located in the first positioning groove, the locking sleeve is in the unlocked position and the fixing sleeve is in the unlocked state; when the pressing part is located in the second positioning groove, the locking sleeve is in the locked position and the fixing sleeve is in the fixed state.

[0007] Furthermore, the depth of the first positioning groove is greater than the depth of the second positioning groove.

[0008] Furthermore, the locking sleeve also has a guide portion, and the puncture needle is provided with a guide groove that is adapted to the guide portion, and the guide portion is located in the guide groove.

[0009] Furthermore, the locking sleeve has a force-applying portion for applying force.

[0010] Furthermore, the fixing sleeve has an anti-slip groove at the end away from the puncture needle to increase friction.

[0011] Furthermore, the front end of the positioning wire has a hook.

[0012] Furthermore, the positioning wire is typically made of a nickel-titanium shape memory alloy with good memory properties and biocompatibility.

[0013] Furthermore, the puncture needle has a needle tube for puncture and a connecting part for receiving a fixing sleeve and a locking sleeve, the needle tube being connected to the connecting part.

[0014] Furthermore, the needle tube and the connecting part are integrally formed.

[0015] The state of the fixing sleeve in the breast puncture positioning needle of this utility model is determined by an independent locking sleeve, not by the puncture needle. The fixing sleeve can fix and release the positioning wire at any position inside the puncture needle. The position of the positioning wire is easy to adjust and can be steplessly adjusted. To change the state of the fixing sleeve, simply move the position of the locking sleeve. The operation is simple and convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred embodiment of the breast puncture positioning needle of this utility model.

[0017] Figure 2 This is a cross-sectional view of a breast biopsy positioning needle according to this utility model.

[0018] Figure 3 This is a schematic diagram of the fixed sleeve in the unlocked state.

[0019] Figure 4 This is a structural diagram of the fixed sleeve.

[0020] Figure 5 This is a schematic diagram of the locking sleeve.

[0021] Figure 6 This is a cross-sectional view of the locking sleeve.

[0022] Figure 7 This is a schematic diagram of the puncture needle.

[0023] The meanings of the labels in the attached diagram are as follows:

[0024] Puncture needle 1, needle tube 11, connecting part 12, guide groove 121, locking sleeve 2, cylinder 21, squeezing part 22, guide part 23, force part 24, fixing sleeve 3, sleeve 31, anti-slip groove 311, gripper 32, first positioning groove 321, second positioning groove 322, positioning wire 4, hook 41. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1 to 3As shown, a preferred embodiment of the breast biopsy positioning needle of this utility model includes a puncture needle 1, a locking sleeve 2, a fixing sleeve 3, and a positioning wire 4. The positioning wire 4 is disposed inside the puncture needle 1, and its front end is visible under ultrasound. The positioning wire 4 is used to locate the lesion. The fixing sleeve 3 is used to fix the rear end of the positioning wire 4, so as to push the positioning wire 4 to move and allow the positioning wire 4 to extend outside the puncture needle 1. The fixing sleeve 3 has a locking position and an unlocking position. The locking sleeve 2 is disposed on the fixing sleeve 3, and the locking sleeve 2 can move back and forth between the locking position and the unlocking position on the fixing sleeve 3 to change the state of the fixing sleeve 3. When the locking sleeve 2 is in the locking position of the fixing sleeve 3, the fixing sleeve 3 can fix the positioning wire 4, that is, the fixing sleeve 3 is in a fixed state. When the locking sleeve 2 is in the unlocking position of the fixing sleeve 3, the fixing sleeve 3 cannot fix the positioning wire 4, and the positioning wire 4 can move within the fixing sleeve 3, that is, the fixing sleeve 3 is in an unlocked state. When the fixing sleeve 3 fixes the positioning wire 4, the positioning wire 4 can be moved inside the puncture needle 1 by pushing the fixing sleeve 3; when the fixing sleeve 3 is released from fixing the positioning wire 4, the positioning wire 4 moves inside the puncture needle 1 and the fixing sleeve 3.

[0027] The positioning wire 4 has a hook 41 at its front end to ensure that the positioning wire 4 can be stably retained at the lesion site. The positioning wire 4 is usually made of nickel-titanium shape memory alloy with good memory and biocompatibility to ensure that the positioning wire 4 can deform with the puncture needle 1 to adapt to the puncture needle 1 and can automatically unfold after the puncture needle 1 is withdrawn.

[0028] like Figure 4As shown, the fixing sleeve 3 includes a sleeve 31 and grippers 32. The grippers 32 are disposed on the sleeve 31 and are used to clamp and fix the positioning wire 4. There are four grippers 32, which are evenly distributed on the sleeve 31 with the sleeve 31 as the center. In other embodiments, there may be only two grippers 32 or more, depending on the requirements. Each gripper 32 is elastic and can be bent and deformed under external force, thereby clamping the positioning wire 4. Each gripper 32 is provided with a first positioning groove 321 and a second positioning groove 322. The depth of the first positioning groove 321 is greater than the depth of the second positioning groove 322. The first positioning groove 321 is the unlocking position, and the second positioning groove 322 is the locking position. When the locking sleeve 2 is positioned within the first positioning groove 321, the gripper 32 will not be deformed by the locking sleeve 2, and at this time, the gripper 32 cannot clamp the fixing positioning wire 4. When the locking sleeve 2 is positioned within the second positioning groove 322, the gripper 32 is deformed by the locking sleeve 2 and bends towards the center of the sleeve 31, at which time the gripper 32 can clamp the fixing wire 4. The sleeve 31 serves as a point of gripping force; gripping the sleeve 31 pushes the entire fixing sleeve 3 to move. The sleeve 31 has an anti-slip groove 311 at the end away from the gripper 32, thereby increasing friction and preventing the hand from slipping on the sleeve 31 during pushing, effectively preventing pushing failure. In another embodiment, a finger ring can be provided at the rear end of the sleeve 31 to replace the anti-slip groove 311.

[0029] like Figure 5 and Figure 6As shown, the locking sleeve 2 includes a cylindrical body 21, a pressing part 22, a guide part 23, and a force-applying part 24. The pressing part 22 is used to press the gripper 32 of the fixing sleeve 3. The pressing part 22 is located inside the cylindrical body 21 and protrudes from the inner wall of the cylindrical body 21, ensuring that when the locking sleeve 2 slides on the fixing sleeve 3, the pressing part 22 can press the gripper 32. When the pressing part 22 abuts against the first positioning groove 321, the locking sleeve 2 is in the unlocked position of the fixing sleeve 3; when the pressing part 22 abuts against the second positioning groove 322, the locking sleeve 2 is in the locked position of the fixing sleeve 3. The method of using the pressing part 22 to cooperate with the groove allows the pressing part 22 to be stably positioned in the first positioning groove 321 or the second positioning groove 322 without external force. The guide portion 23 is disposed on the outer wall of the cylinder 21 and protrudes from the outer wall of the cylinder 21. The puncture needle 1 is provided with a guide groove 121 adapted to the guide portion 23. The guide portion 23 is located in the guide groove 121, which can prevent the locking sleeve 2 from rotating around the axis. The locking sleeve 2 can only move along the axis. There are four guide portions 23, which are evenly distributed on the cylinder 21, so that the cylinder 21 is evenly stressed and the guiding effect is better. In other embodiments, there can be one or more guide portions 23, and the number of guide portions 23 can be set according to the needs. There are two force-applying parts 24, symmetrically arranged on the cylinder 21. The force-applying parts 24 protrude from the outer wall of the cylinder 21, allowing fingers to apply force to them. This facilitates pushing the fixing sleeve 3 or the locking sleeve 2, causing relative movement between the locking sleeve 2 and the fixing sleeve 3 to switch the position of the locking sleeve 2. When two fingers are placed on the force-applying part 24 near the puncture needle 1, pressing the fixing sleeve 3 with the thumb moves the locking sleeve 2 from the locked position to the unlocked position. At this time, the squeezing part 22 will not squeeze the clamp 32, thus releasing the clamp 32 from fixing the positioning wire 4. When one hand holds the fixing sleeve 3, the other hand pushes the locking sleeve 2 towards one end of the puncture needle 1, moving the locking sleeve 2 from the unlocked position to the locked position. The squeezing part 22 squeezes the clamp 32, thereby fixing the positioning wire 4.

[0030] like Figure 7 As shown, the puncture needle 1 has a needle tube 11 and a connecting part 12. The needle tube 11 and the connecting part 12 are integrally formed, which can reduce assembly steps. The needle tube 11 is used for puncture, and the connecting part 12 is used to accommodate the fixing sleeve 3 and the locking sleeve 2. That is, the fixing sleeve 3 and the locking sleeve 2 are disposed in the connecting part 12, and the inner wall of the connecting part 12 is provided with a guide groove 121 that is adapted to the locking sleeve 2.

[0031] In use, the puncture needle 1 is inserted to the predetermined position according to the puncture requirements. After reaching the predetermined position, the fixing sleeve 3 is pushed to move towards one end of the puncture needle 1, causing the positioning wire 4 to be pushed out of the needle tube 11. After being pushed out of the needle tube 11, the positioning wire 4 automatically returns to a T-shape. Then, the force part 24 of the locking sleeve 2 is grasped and the positioning wire 4 is pushed to move the locking sleeve 2 to the unlocked position, at which point the locking sleeve 2, fixing sleeve 3, and puncture needle 1 can be removed. The fixing sleeve 3 fixes the positioning wire 4 independently of the locking sleeve 2, not by the puncture needle 1. Therefore, the fixing sleeve 3 can fix and release the positioning wire 4 at any position inside the puncture needle 1. The position of the positioning wire 4 is easy to adjust and can be steplessly adjusted, while the operation is simple and convenient.

[0032] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, shall also be within the patent protection scope of this utility model.

Claims

1. A breast biopsy positioning needle, characterized in that: The device includes a positioning wire for positioning, a fixing sleeve for fixing the positioning wire, a locking sleeve for changing the state of the fixing sleeve, and a puncture needle for puncture. The fixing sleeve has a fixed state and an unlocked state. The locking sleeve is slidably disposed on the fixing sleeve. The fixing sleeve has a locking position and an unlocked position. The locking sleeve is disposed on the fixing sleeve and can move back and forth between the locking position and the unlocked position on the fixing sleeve. The movement of the locking sleeve between the locking position and the unlocked position allows the fixing sleeve to switch between the fixed state and the unlocked state. When the locking sleeve is in the locking position, the fixing sleeve is in the fixed state. When the locking sleeve is in the unlocked position, the fixing sleeve is in the unlocked state.

2. The breast aspiration positioning needle as described in claim 1, characterized in that: The fixing sleeve has a clamping claw, on which a first positioning groove and a second positioning groove are provided. The locking sleeve has a pressing part for pressing the clamping claw. The first positioning groove and the second positioning groove are adapted to each other. When the pressing part is located in the first positioning groove, the locking sleeve is in the unlocked position and the fixing sleeve is in the unlocked state. When the pressing part is located in the second positioning groove, the locking sleeve is in the locked position and the fixing sleeve is in the fixed state.

3. The breast aspiration positioning needle as described in claim 2, characterized in that: The depth of the first positioning groove is greater than the depth of the second positioning groove.

4. The breast biopsy positioning needle as described in claim 1, characterized in that: The locking sleeve also has a guide portion, and the puncture needle is provided with a guide groove that is adapted to the guide portion, and the guide portion is located in the guide groove.

5. A breast biopsy positioning needle as described in claim 1, characterized in that: The locking sleeve has a force-applying portion for applying force.

6. The breast biopsy positioning needle as described in claim 1, characterized in that: The retaining sleeve has an anti-slip groove at the end away from the puncture needle to increase friction.

7. A breast biopsy positioning needle as described in claim 1, characterized in that: The positioning wire has a hook at its front end.

8. A breast biopsy positioning needle as described in claim 1, characterized in that: The positioning wire is typically made of a nickel-titanium shape memory alloy with good memory properties and biocompatibility.

9. A breast biopsy positioning needle as described in claim 1, characterized in that: The puncture needle has a needle tube for puncture and a connecting part for receiving a fixing sleeve and a locking sleeve, the needle tube being connected to the connecting part.

10. A breast biopsy positioning needle as described in claim 9, characterized in that: The needle tube and the connecting part are integrally formed.

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