Positioning screw
The integrated structure, consisting of a positioning hook, a positioning mark sleeve, and a guide wire, solves the problems of high processing costs and complex processes associated with existing positioning wires, achieving cost reduction and simplified processing, while also improving the reliability and adaptability of the connection.
Patent Information
- Application Number
- CN202423145486.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The existing positioning wires have high processing costs and are difficult to process with special techniques in different parts, resulting in expensive materials and complex processing.
The system uses a three-part connection of positioning hook, positioning mark sleeve and guide wire to form an integral structure. The positioning mark sleeve is deformed by pressure to form pits and protrusions to fix the connection, which simplifies the processing technology and allows for the selection of different materials and processes depending on the location.
It reduces processing difficulty and cost, while improving the reliability and flexibility of the connection, adapting to the design requirements of different parts.
Smart Images
Figure CN223944758U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to medical devices, and more particularly to a positioning wire. BACKGROUND
[0002] At present, breast cancer has been the most common malignant tumor in women, and its incidence rate shows a rising trend year by year. In clinical application, breast lesions often cause difficulties in surgical treatment and false negative results of pathological sampling due to small lesions and negative palpation by clinicians. In view of this situation, the use of breast positioning needle positioning method can be used to assist in lesion puncture under the guidance of ultrasound or X-ray, and the guide wire is left in the lesion site to guide surgeons to perform surgical resection and pathological sampling of suspected malignant lesions. This puncture positioning method under the guidance of imaging has high safety and accuracy, and has high application value. This method can remove small breast benign diseases and is a high-level diagnostic method in early diagnosis of breast cancer.
[0003] Disposable breast positioning wire and guide needle are commonly used medical consumables in breast puncture positioning. The existing positioning wire is mostly made of stainless steel wire, and is etched or marked after integral molding. The positioning hook needs to be straightened or folded and loaded into the needle tube. After the needle is punctured into the human tissue, the positioning hook is pushed out of the needle tube into the lesion, and the positioning hook needs to restore its original shape for in-vivo expansion and fixation. The existing positioning hook has Q-shaped, V-shaped, Z-shaped and other shapes, as well as single hook, double hook, four hook and other structural styles. The molding process has high requirements on the material, and different alloy materials may also be required. Therefore, under the process of the whole positioning wire being made of the same material, the material is expensive, the integral molding process of the positioning wire is difficult, the special process treatment of different parts is difficult, and the processing cost is high. CONTENT OF THE INVENTION
[0004] The technical problem to be solved by the present application is to provide a positioning wire that can effectively solve the problems of high processing cost and difficult special process treatment of different parts, in view of the above defects of the prior art.
[0005] The technical solution adopted by the present application to solve the technical problem is: a positioning wire is provided, which comprises a positioning hook, a positioning mark sleeve and a guide wire, the positioning mark sleeve is provided with a positioning mark, the guide wire is provided with an operation mark, the proximal end of the hook wire of the positioning hook and the distal end of the guide wire are respectively fixedly connected with the positioning mark sleeve by means of deforming the positioning mark sleeve under pressure, so that the positioning hook, the positioning mark sleeve and the guide wire are connected in three sections to form an integral whole.
[0006] According to one embodiment of the positioning wire described in the present application, the positioning marker sleeve is a hollow circular tube, the hook wire proximal end of the positioning hook and the distal end of the guide wire are inserted into the positioning marker sleeve from two ends of the positioning marker sleeve respectively, and the positioning hook wire proximal end and the guide wire distal end are fixedly connected in the positioning marker sleeve by pressurizing and deforming the positioning marker sleeve to form an array of concave pits on the outer surface of the positioning marker sleeve and a corresponding array of convex protrusions on the inner surface of the positioning marker sleeve, which are in interference fit with the hook wire proximal end of the positioning hook and the distal end of the guide wire; the array of concave pits formed on the outer surface of the positioning marker sleeve serves as the positioning marker.
[0007] According to one embodiment of the positioning wire described in the present application, the hook wire proximal end face of the positioning hook and the distal end face of the guide wire are aligned in the positioning marker sleeve.
[0008] According to one embodiment of the positioning wire described in the present application, the positioning markers are segmented and distributed from the distal end to the proximal end of the positioning marker sleeve.
[0009] According to one embodiment of the positioning wire described in the present application, the positioning markers include a first marker segment distributed at the distal end of the positioning marker sleeve, a second marker segment distributed at the middle of the positioning marker sleeve, and a third marker segment distributed at the proximal end of the positioning marker sleeve.
[0010] According to one embodiment of the positioning wire described in the present application, a first hole is also provided on the positioning marker sleeve near the proximal end of each segment of the positioning marker, and a convex protrusion with an exposed outer surface is filled in the first hole.
[0011] According to one embodiment of the positioning wire described in the present application, the positioning marker sleeve also has a second hole locally provided in the area where the concave pits and convex protrusions are formed by pressurizing and deforming to fixedly connect the proximal end of the hook wire and the distal end of the guide wire.
[0012] According to one embodiment of the positioning wire described in the present application, the positioning hook, the positioning marker sleeve, and the guide wire are made of the same or different materials and the same or different processing technologies.
[0013] According to one embodiment of the positioning wire described in the present application, the positioning hook is made of a medical nickel-titanium alloy material, the positioning marker sleeve is a stainless steel tube, and the guide wire is made of a medical stainless steel wire.
[0014] According to one embodiment of the positioning wire described in the present application, the operation markers on the guide wire are made by etching, electrolysis, laser dotting, or pressurizing and deforming processes.
[0015] The positioning wire of the application has the following beneficial effects: the positioning wire according to the embodiment of the application is composed of a positioning hook, a positioning mark sleeve and a guide wire, the positioning hook, the positioning mark sleeve and the guide wire are connected to form an integral whole by deforming the positioning mark sleeve under pressure, and the product is firmly and reliably connected; in addition, the three sections of the positioning wire can be made of different materials and processed by different processes according to requirements, so that the positioning wire meets the design requirements at the corresponding positions, thereby reducing the processing difficulty and effectively reducing the cost. BRIEF DESCRIPTION OF DRAWINGS
[0016] The application will be further described below in combination with the drawings and embodiments, wherein:
[0017] Figure 1 is a schematic diagram of the overall structure of the positioning wire according to an embodiment of the application;
[0018] Figure 2 is Figure 1 is a schematic diagram of the exploded structure of the positioning wire shown in
[0019] Figure 3 is a schematic diagram of the local structure of the positioning wire according to an embodiment of the application;
[0020] Figure 4 is a schematic diagram of the local structure of the positioning wire according to another embodiment of the application.
[0021] Brief Description of the Drawings: 10-positioning wire; 11-positioning hook; 111-hook wire; 12-positioning mark sleeve; 121-outer surface; 122-inner surface; 123-pit; 124-bump; 125-first hole; 126-bump; 127-second hole; 13-guide wire; 14-positioning mark; 14a-first mark section; 14b-second mark section; 14c-third mark section; 15-operation mark. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical scheme and advantages of the application more clear and understandable, the application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and do not limit the application. Moreover, the embodiments in the application and the features in the embodiments can be combined with each other without conflict.
[0023] Figure 1 and Figure 2 respectively show the overall structure and exploded structure of the positioning wire 10 according to an embodiment of the application. Referring to Figure 1 and Figure 2As shown, the positioning wire 10 is composed of three sections of the positioning hook 11, the positioning marker sleeve 12 and the guide wire 13. The positioning marker sleeve 13 is provided with the positioning marker 14, and the guide wire 13 is provided with the operation marker 15. The positioning hook 11 is formed by the hook wire 111 with a head shaped as required, which can be the V-shaped as shown, or Q-shaped, Z-shaped, etc., and can also have a single hook, double hook, four hooks, etc., and is not limited to the embodiment shown. The proximal end of the hook wire 111 of the positioning hook 11 and the distal end of the guide wire 13 are fixedly connected to the positioning marker sleeve 12 by deforming the positioning marker sleeve 12 under pressure, so that the three sections of the positioning hook 11, the positioning marker sleeve 12 and the guide wire 13 are connected to form a whole.
[0024] Specifically referring to Figure 3 In the embodiment shown, the positioning marker sleeve 12 is a hollow circular tube with an outer surface 121 and an inner surface 122. The proximal end of the hook wire 111 of the positioning hook 11 and the distal end of the guide wire 13 are inserted into the positioning marker sleeve 12 from the two ends of the positioning marker sleeve 12, so that the proximal end face of the hook wire 111 and the distal end face of the guide wire 13 are aligned in the positioning marker sleeve 12. Then, the positioning marker sleeve 12 is deformed under pressure to form an array of pits 123 on the outer surface 121 of the positioning marker sleeve 12, and at the same time, an array of corresponding protrusions 124 is formed on the inner surface 122 of the positioning marker sleeve 12. The protrusions 124 are in interference fit with the proximal end of the hook wire 111 and the distal end of the guide wire 13, so as to fixedly connect the proximal end of the hook wire 111 of the positioning hook 11 and the distal end of the guide wire 13 in the positioning marker sleeve 12, so that the three sections of the positioning hook 11, the positioning marker sleeve 12 and the guide wire 13 are connected to form a whole positioning wire 10. Moreover, the array of pits 123 formed on the outer surface 121 of the positioning marker sleeve 12 is orderly distributed, forming a feature of increasing ultrasonic visualization, which can be used as the positioning marker 14 at the same time, so that the positioning marker 14 can be made by etching or dotting, etc. on the positioning marker sleeve 12, and the processing is simpler and faster. Further, the positioning marker 14 formed by the pits 123 can be distributed in sections from the distal end to the proximal end of the positioning marker sleeve 12 according to the depth requirement, so as to display the positioning depth. For example Figure 2 In the embodiment shown, the positioning marker 14 is composed of three parts of the first marker section 14a distributed at the distal end of the positioning marker sleeve 12, the second marker section 14b distributed at the middle of the positioning marker sleeve 12 and the third marker section 14c distributed at the proximal end of the positioning marker sleeve 12, so as to display the three-section positioning depth of the positioning wire 10, and facilitate the doctor to judge how far away from the lesion where the positioning hook 11 is located when performing the surgical resection along the positioning wire 10. In addition, referring to Figure 3As shown, the first hole 125 can be formed on the proximal end of the positioning marker sleeve 12 close to each segment positioning marker, and the non-falling convex point 126 exposed on the outer surface 121 can be filled in the first hole 125, so that the surgeon can touch the convex point 126 of the segment through the gloves to determine the distance from the lesion when the visual positioning marker is not clear.
[0025] The positioning wire 10 according to the above embodiments of the present application is composed of three segments of the positioning hook 11, the positioning marker sleeve 12 and the guide wire 13, and the positioning hook 11, the positioning marker sleeve 12 and the guide wire 13 are connected to form an integral whole through the pressurized deformation of the positioning marker sleeve 12 to form the array of the concave pits 123 and the convex points 124, the product is firmly and reliably connected, the array of the concave pits 123 is used as the positioning marker 14 at the same time, and the processing technology is simplified. According to different embodiments of the present application, the pressurized deformation mode of the positioning marker sleeve 12 connecting the hook wire 111 and the guide wire 13 is limited to the convex interference fit in the illustrated embodiment, for example, after the positioning marker sleeve 12 is subjected to special treatment (such as etching, electrolysis, laser dotting or stamping process) to form the positioning marker 14, it is riveted with the hook wire 111 and the guide wire 13, and can also be fixedly connected to form an integral whole, and is convenient and fast, and has low processing difficulty. Referring again to Figure 1 and Figure 2 As shown, the operation marker 15 on the proximal end of the guide wire 13 is used to display the position of the positioning hook 11, and can be made of conventional etching, electrolysis, laser dotting process, or can be made by the similar pressurized deformation process as the positioning marker 14.
[0026] Since the positioning wire 10 is composed of three sections of the positioning hook 11, the positioning marker sleeve 12 and the guide wire 13, the three sections can be made of the same or different materials and by the same or different processing techniques according to design requirements. For example, the positioning hook 11, which has high requirements on material properties, should be able to be folded into the needle tube, to be restored to the initial shape to hook the lesion, and the hook wire 111 should not be broken when the exposed guide wire 13 is pulled during the operation, so a high-performance material should be selected. The guide wire 13, which has low requirements on material properties, can be made of a general material, which can effectively reduce the cost compared to using a high-performance material for the whole positioning wire. For example, the positioning hook 11 is made of medical nickel-titanium alloy material, which is easy to deform and not easy to break, the positioning marker sleeve 12 is a stainless steel tube, and the guide wire 13 is made of a medical stainless steel wire material with high hardness, which is not easy to deform when the proximal end of the guide wire 13 is pinched to help the positioning hook 11 out of the needle tube. When the three sections are not connected, different processing techniques such as heat treatment and surface treatment can be performed on different parts to meet the design requirements of the corresponding parts of the positioning wire 10, and the processing technique is simple. In addition, the actual positioning wire 10 has different lengths such as 7, 10, 12 and 15 cm. If the positioning hook 11 is only used as a fixed-length universal material for batch processing, and then connected with a low-cost stainless steel guide wire 13 of different lengths, the material management cost can also be reduced.
[0027] According to different embodiments of the present application, when there are other pushing devices and the guide wire 13 does not need to play a boosting role, the guide wire 13 can be made of soft materials such as medical sutures, which are flexible and exposed to the outside of the body to prevent body movements from affecting the displacement of the positioning hook 11. In this case, as shown in FIG. 6, the positioning marker sleeve 12 can also have a second hole 125 locally formed in the area where the hook wire 111 and the guide wire 13 are fixedly connected by pressing and deforming to form a pit 123 and a protrusion 124. When the hook wire 111 and the guide wire 13 are pressed and deformed, the material returns to embed the protrusion into the second hole 125 to tighten, thereby increasing the connection firmness. Figure 4
[0028] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A positioning wire, characterized in that, It includes a positioning hook, a positioning mark sleeve, and a guide wire. The positioning mark sleeve is provided with a positioning mark, and the guide wire is provided with an operation mark. The proximal end of the hook wire of the positioning hook and the distal end of the guide wire are fixedly connected to the positioning mark sleeve by applying pressure to deform the positioning mark sleeve, so that the positioning hook, the positioning mark sleeve and the guide wire are connected to form a whole.
2. The positioning wire according to claim 1, characterized in that, The positioning mark sleeve is a hollow round tube. The proximal end of the hook wire of the positioning hook and the distal end of the guide wire are inserted into the positioning mark sleeve from both ends. By applying pressure to deform the positioning mark sleeve, an array of pits is formed on the outer surface of the positioning mark sleeve. At the same time, a corresponding array of protrusions is formed on the inner surface of the positioning mark sleeve. These protrusions are interference-fitted with the proximal end of the hook wire of the positioning hook and the distal end of the guide wire, thus fixing the proximal end of the hook wire of the positioning hook and the distal end of the guide wire into the positioning mark sleeve. The array of pits formed on the outer surface of the positioning mark sleeve serves as a positioning mark.
3. The positioning wire according to claim 2, characterized in that, The proximal end face of the positioning hook wire and the distal end face of the guide wire are aligned inside the positioning mark sleeve.
4. The positioning wire according to claim 2, characterized in that, The positioning marks are distributed in segments from the distal end to the proximal end of the positioning mark sleeve.
5. The positioning wire according to claim 4, characterized in that, The positioning mark includes a first marking segment distributed at the distal end of the positioning mark sleeve, a second marking segment distributed in the middle of the positioning mark sleeve, and a third marking segment distributed at the proximal end of the positioning mark sleeve.
6. The positioning wire according to claim 4, characterized in that, The positioning mark sleeve has a first channel near the proximal end of each positioning mark, and the first channel is filled with welded protrusions that expose the outer surface.
7. The positioning wire according to claim 2, characterized in that, The positioning mark sleeve also has a second channel partially opened in the area where the pit and protrusion formed by the pressure deformation fix the proximal end of the hook wire to the distal end of the guide wire.
8. The positioning wire according to claim 1, characterized in that, The positioning hook, positioning mark sleeve, and guide wire are made of the same or different materials and using the same or different processing techniques.
9. The positioning wire according to claim 1, characterized in that, The positioning hook is made of medical-grade nickel-titanium alloy, the positioning mark sleeve is made of stainless steel tube, and the guide wire is made of medical-grade stainless steel wire.
10. The positioning wire according to claim 1, characterized in that, The operation marks on the guidewire are made by etching, electrolysis, laser dotting, or pressure deformation processes.