Flexible tail end puncture positioning system

Abstract

The utility model relates to a flexible tail end puncture positioning system which comprises a puncture needle tube (1) and a positioning guide wire (2) arranged in the puncture needle tube (1) in a penetrating mode, and a holding portion (3) is further arranged outside the puncture needle tube (1). The positioning guide wire (2) comprises a rigid guide wire (21) and a flexible guide wire (22) connected with the rigid guide wire (21), and a fixed sleeve (23) is arranged at the joint of the rigid guide wire (21) and the flexible guide wire (22); and at least two positioning hooks (24) capable of extending out of the puncture needle tube (1) are arranged at the top end of the rigid guide wire (21). Compared with the prior art, the rigid guide wire is used for stretching into the skin and positioning the target tissue through the positioning hook at the top end, the part, remaining outside the skin, of the flexible guide wire can be conveniently bound and fixed, and the influence of accidental pulling of the in-vitro guide wire on the in-vivo guide wire and the positioning hook can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a flexible tail-end puncture positioning system. Background Art

[0002] In recent years, for breast lesions with a diameter ≤ 10 mm or those that are not palpable, early diagnosis has been relatively difficult. Clinically, there is a lack of specific evaluation indicators, and it is not easy to determine whether they are benign or malignant, often resulting in missed diagnoses and delayed treatment opportunities. Clinically, the treatment of such patients is mainly advocated by surgical operations. During the surgical operation, such micro-lesions are accurately positioned by using a hook wire. Therefore, accurate positioning under preoperative imaging guidance is very important and often becomes the key to the success or failure of the operation.

[0003] In recent years, breast micro-lesion positioning techniques such as preoperative hook needle puncture under imaging guidance have been widely carried out in the resection surgery of breast masses. Currently, the positioning guide wires used clinically are all made of rigid metal materials. With the changes in the patient's body position and activities, as well as the preoperative wound disinfection and other processes, it is easy to involve the guide wire exposed outside the body, causing the head end of the guide wire to "unhook" or shift, resulting in the surgeon being unable to accurately find the target lesion, thereby causing the risk of unnecessary extended resection range or lesion omission, and causing unnecessary harm to the patient. In addition, the patient has discomfort such as local pain and a large psychological burden, which will further increase the risk of accidental involvement, resulting in "unhooking". Moreover, the time for positioning with a rigid metal guide wire hook needle is all selected on the day of the operation, which has great limitations on the selection of the elective operation time.

[0004] Therefore, there is still a need to develop a puncture positioning guide wire with a tail end that is easy to fix, so that it is not easy to unhook after the head end hooks the target tissue. Content of the Utility Model

[0005] The purpose of the utility model is to provide a flexible tail-end puncture positioning system to overcome the defect that the existing positioning guide wire is easy to unhook after hooking the target tissue.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A flexible tail-end puncture positioning system includes a puncture needle tube and a positioning guide wire inserted into the puncture needle tube, and a holding part is further arranged outside the puncture needle tube;

[0008] The positioning guide wire includes a rigid guide wire and a flexible guide wire connected to the rigid guide wire, and a fixing sleeve is arranged at the connection between the rigid guide wire and the flexible guide wire;

[0009] At least two positioning hooks that can extend out of the puncture needle tube are arranged at the top end of the rigid guide wire.

[0010] Furthermore, a plurality of dividing lines are arranged at equal intervals on the puncture needle tube.

[0011] Further, one end of the puncture needle tube away from the holding part is provided with an inclined surface.

[0012] Further, the holding part is of a hollow structure, and the puncture needle tube penetrates through the holding part.

[0013] Further, the fixing sleeve is of an annular structure, and the fixing sleeve is sleeved outside the connection part of the rigid guide wire and the flexible guide wire.

[0014] Further, the rigid guide wire is made of medical-grade nickel-titanium alloy of memory metal, having certain rigidity and memory property, so that the positioning hook at the top can stretch out and contract in the puncture needle tube, facilitating guiding and positioning.

[0015] Further, the flexible guide wire is connected with the rigid guide wire and is made of medical-grade surgical thread material, being soft and having certain elasticity, and can reduce the damage to human tissues during puncture.

[0016] Furthermore, after the positioning hook positions, the flexible guide wire is fixed on the skin by using medical-grade tape or adhesive patch to ensure that the flexible guide wire will not slide and fall off during displacement. The fixing method is simple, facilitating the operation of doctors and saving time.

[0017] Further, a boosting sleeve of the same length as the flexible guide wire is sleeved outside the flexible guide wire.

[0018] Furthermore, the boosting sleeve is of a hollow cylindrical structure, and the inner diameter of the boosting sleeve is larger than the outer diameter of the fixing sleeve.

[0019] Further, the shape of the positioning hook is arc-shaped.

[0020] Further, the rigid guide wire and the positioning hook are integrally formed.

[0021] Furthermore, the rigid guide wire includes multiple metal guide wires helically braided, and the tops of the metal guide wires are all positioning hooks bent into arc shapes.

[0022] Furthermore, the rigid guide wire is helically braided by three metal guide wires, and the top of the rigid guide wire is three evenly distributed positioning hooks.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] (1) The positioning guide wire of the utility model is divided into two parts: a rigid guide wire and a flexible guide wire. The rigid guide wire is used to extend into the skin and position the target tissue through the positioning hook at the top. The part of the flexible guide wire remaining outside the skin can be conveniently bandaged and fixed, and can effectively avoid the influence of accidental pulling of the external guide wire on the internal guide wire and the positioning hook.

[0025] (2) The flexible tail-end puncture positioning system of the present utility model is provided with a flexible guide wire, which facilitates the dressing and fixation after the positioning of the guide wire, can effectively avoid the unhooking of the positioning hook, and relieve the pain and psychological tension of the patient.

[0026] (3) The top end of the positioning guide wire of the present utility model is provided with a plurality of arc-shaped hooks, which can hook the target tissue more firmly and increase the imaging area under the guidance of imaging.

[0027] (4) The flexible tail-end puncture positioning system of the present utility model can also be provided with a fixing sleeve at the connection of the rigid guide wire and the flexible guide wire, making the connection of the rigid guide wire and the flexible guide wire more firm and not generating displacement due to pulling; at the same time, a boosting sleeve of the same length as the flexible guide wire can be provided to facilitate the medical staff to push the positioning guide wire. Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present utility model.

[0029] Figure 2 It is a schematic diagram of the structure of the positioning guide wire of Embodiment 1 of the present utility model.

[0030] Figure 3 It is a partial enlarged view of the positioning hook of Embodiment 1 of the present utility model.

[0031] Figure 4 It is a schematic diagram of the structure of the positioning guide wire of Embodiment 3 of the present utility model.

[0032] Figure 5 It is a schematic diagram of the structure of the boosting sleeve and the fixing sleeve of Embodiment 3 of the present utility model.

[0033] Figure 6 It is a schematic diagram of the structure of the positioning guide wire of Embodiment 4 of the present utility model.

[0034] Figure 7 It is a partial enlarged view of the positioning hook of Embodiment 4 of the present utility model.

[0035] Explanation of the Marks in the Drawings:

[0036] 1 - puncture needle tube, 11 - dividing line, 2 - positioning guide wire, 21 - rigid guide wire, 22 - flexible guide wire, 23 - fixing sleeve, 24 - positioning hook, 25 - boosting sleeve, 3 - holding part. Detailed Embodiment

[0037] The present utility model will be described in detail below with reference to the drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present utility model, and the detailed implementation manner and specific operation process are given, but the protection scope of the present utility model is not limited to the following embodiments.

[0038] In the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] Embodiment 1:

[0041] This embodiment provides a flexible tail-end puncture positioning system, as Figures 1-3 shown, which includes a puncture needle tube 1 and a positioning guide wire 2 inserted into the puncture needle tube 1. A holding portion 3 for facilitating the medical staff to hold is further provided outside the puncture needle tube 1.

[0042] The positioning guide wire 2 includes a rigid guide wire 21 and a flexible guide wire 22 connected to the rigid guide wire 21. A fixing sleeve 23 is provided at the connection between the rigid guide wire 21 and the flexible guide wire 22. At least two positioning hooks 24 that can extend out of the puncture needle tube 1 are further provided at the top end of the rigid guide wire 21, which can hook the target tissue for imaging detection.

[0043] During use, first insert the positioning guide wire 2 into the puncture needle tube 1, and a part of the flexible guide wire 22 at the tail end of the positioning guide wire 2 is outside the puncture needle tube 1. Then hold the holding portion 3 and insert the puncture needle tube 1 into the body. Subsequently, push the positioning guide wire 2 to the tissue to be positioned through the tail end of the positioning guide wire 2. At this time, the positioning hooks 24 extend out of the puncture needle tube 1 and expand into a multi-hook shape, and hook into the target tissue, so as to facilitate the positioning of the target human tissue. Then pull out the needle tube, and only keep a part of the flexible guide wire 22 at the tail end of the positioning guide wire 2 extending out of the skin. The flexible guide wire 22 is convenient for dressing and fixing, and can effectively prevent the occurrence of the unhooking phenomenon caused by accidental pulling.

[0044] Example 2:

[0045] This embodiment provides a flexible tail-end puncture positioning system, which includes a puncture needle tube 1 and a positioning guide wire 2 inserted into the puncture needle tube 1. A holding part 3 for medical staff to hold is also provided outside the puncture needle tube 1. The positioning guide wire 2 includes a rigid guide wire 21 and a flexible guide wire 22 connected to the rigid guide wire 21. A fixing sleeve 23 is provided at the connection of the rigid guide wire 21 and the flexible guide wire 22. At least two positioning hooks 24 that can extend out of the puncture needle tube 1 are provided at the top end of the rigid guide wire 21, which can hook the target tissue for imaging detection.

[0046] In this embodiment, a plurality of dividing lines 11 are equidistantly arranged on the puncture needle tube 1 to facilitate medical staff to accurately confirm the needle insertion depth. One end of the puncture needle tube 1 away from the holding part 3 is provided with an inclined surface to facilitate the puncture needle tube 1 to penetrate the skin. The holding part 3 of this embodiment is a hollow structure, and the puncture needle tube 1 penetrates through the holding part 3 to facilitate medical staff to hold the holding part 3 for operation.

[0047] Example 3:

[0048] This embodiment provides a flexible tail-end puncture positioning system, which includes a puncture needle tube 1 and a positioning guide wire 2 inserted into the puncture needle tube 1. A holding part 3 for medical staff to hold is also provided outside the puncture needle tube 1. The positioning guide wire 2 includes a rigid guide wire 21 and a flexible guide wire 22 connected to the rigid guide wire 21. A fixing sleeve 23 is provided at the connection of the rigid guide wire 21 and the flexible guide wire 22. Two positioning hooks 24 that can extend out of the puncture needle tube 1 are symmetrically provided at the top end of the rigid guide wire 21, which can hook the target tissue for imaging detection.

[0049] As Figures 4-5 shown, the fixing sleeve 23 of this embodiment is a ring structure, and the fixing sleeve 23 is sleeved outside the connection of the rigid guide wire 21 and the flexible guide wire 22, which can make the connection of the rigid guide wire 21 and the flexible guide wire 22 more firm and will not generate displacement due to pulling. A boosting sleeve 25 with the same length as the flexible guide wire 22 is also sleeved outside the flexible guide wire 22 of this embodiment to facilitate medical staff to push the positioning guide wire 2. The boosting sleeve 25 is a hollow cylindrical structure, and the inner diameter of the boosting sleeve 25 is larger than the outer diameter of the fixing sleeve 23, so that the positioning guide wire 2 can smoothly extend into the skin through the boosting sleeve 25.

[0050] The flexible tail-end puncture positioning system of this embodiment can be used under the guidance of ultrasound, mammography, and CT.

[0051] Example 4:

[0052] This embodiment provides a flexible distal puncture positioning system, which includes a puncture needle tube 1 and a positioning guide wire 2 inserted into the puncture needle tube 1. A holding portion 3 convenient for medical staff to hold is further provided outside the puncture needle tube 1. The positioning guide wire 2 includes a rigid guide wire 21 and a flexible guide wire 22 connected to the rigid guide wire 21. A fixing sleeve 23 is provided at the connection between the rigid guide wire 21 and the flexible guide wire 22.

[0053] The rigid guide wire 21 of this embodiment is made of a memory metal medical-grade nitinol alloy, having a certain rigidity and memory, so that the positioning hook 24 at the top can extend and contract in the puncture needle tube 1, facilitating guidance and positioning. The flexible guide wire 22 is connected to the rigid guide wire 21. The flexible guide wire 22 is made of a medical-grade surgical thread material, which is soft and has a certain elasticity, and can reduce the damage to human tissues during puncture. The length of the rigid guide wire 21 in this embodiment is about 20 mm, and the diameter is 0.25 mm. Made of medical-grade nitinol alloy material, it has good hardness and memory, which is convenient for doctors to position under imaging guidance. The length of the flexible guide wire 22 is about 120 mm, and the diameter is 0.2 mm. The length of the flexible guide wire 22 remaining outside the skin is about 75 mm. Made of medical-grade surgical thread material (polypropylene or nylon), it is soft and has a certain elasticity, is easy to penetrate tissues, and reduces tissue damage. After positioning, the doctor can use medical-grade tape or adhesive patches to fix the flexible guide wire 22 on the skin to ensure that the flexible guide wire 22 will not slide or fall off during displacement. During the operation, enter the tissue along the guide wire to perform subsequent surgical operations, and accurately position the target position through the positioning hook 24 at the front end of the rigid guide wire 21.

[0054] At least two positioning hooks 24 that can extend out of the puncture needle tube 1 are further provided at the top of the rigid guide wire 21, which can hook the target tissue for imaging detection. The shapes of the positioning hooks 24 in this embodiment are all arcs formed by bending, and the rigid guide wire 21 and the positioning hooks 24 are integrally formed. Specifically, the rigid guide wire 21 includes multiple helically braided metal guide wires, and the tops of the metal guide wires are all positioning hooks 24 bent into arcs.

[0055] As Figures 6-7 shown, the rigid guide wire 21 in this embodiment is helically braided by three metal guide wires, and the top of the rigid guide wire 21 is three evenly distributed positioning hooks 24. Compared with Embodiment 3, the number of positioning hooks 24 is increased from two symmetrically arranged positioning hooks 24 to three positioning hooks 24, which can increase the imaging area under imaging guidance and can better image. When using the puncture positioning system of this embodiment, the positioning hook 24 is in the puncture needle tube 1 due to its memory function. Insert the puncture needle tube 1 into the body, and then push the positioning guide wire 2 to the human tissue to be positioned. At this time, the positioning hook 24 unfolds, thereby anchoring and positioning the human tissue.

[0056] The above description of the embodiments is to enable those of ordinary skill in the art to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the utility model according to the disclosure of the utility model should be within the protection scope of the utility model.

Claims

1. A flexible tail-end puncture positioning system, characterized in that It includes a puncture needle tube (1) and a positioning guide wire (2) inserted into the puncture needle tube (1), and a holding part (3) is also provided outside the puncture needle tube (1). The positioning guide wire (2) includes a rigid guide wire (21) and a flexible guide wire (22) connected to the rigid guide wire (21), and a fixing sleeve (23) is provided at the connection between the rigid guide wire (21) and the flexible guide wire (22). At least two positioning hooks (24) capable of extending out of the puncture needle tube (1) are provided at the top end of the rigid guide wire (21).

2. The flexible tail-end puncture positioning system according to claim 1, wherein A plurality of dividing lines (11) are equidistantly arranged on the puncture needle tube (1).

3. The flexible tail-end puncture positioning system according to claim 1, characterized in that, One end of the puncture needle tube (1) far from the holding part (3) is provided with an inclined surface.

4. The flexible distal puncture positioning system according to claim 1, wherein The holding part (3) is of a hollow structure, and the puncture needle tube (1) penetrates through the holding part (3).

5. A flexible tail-end puncture positioning system according to claim 1, wherein The fixing sleeve (23) is of an annular structure, and the fixing sleeve (23) is sleeved outside the connection between the rigid guide wire (21) and the flexible guide wire (22).

6. The flexible tail-end puncture positioning system according to claim 1, wherein A boosting sleeve (25) having the same length as the flexible guide wire (22) is sleeved outside the flexible guide wire (22). The boosting sleeve (25) is of a hollow cylindrical structure, and the inner diameter of the boosting sleeve (25) is larger than the outer diameter of the fixing sleeve (23).

7. A flexible tail-end puncture positioning system according to claim 1, characterized in that, The shape of the positioning hook (24) is arc-shaped.

8. A flexible tail-end puncture positioning system according to claim 1, wherein The rigid guide wire (21) and the positioning hook (24) are integrally formed.

9. A flexible tail-end puncture positioning system according to claim 8, characterized in that, The rigid guide wire (21) includes multiple helically braided metal guide wires, and the top ends of the metal guide wires are all positioning hooks (24) bent into an arc shape.

10. A flexible tail-end puncture positioning system according to claim 9, wherein The rigid guide wire (21) is helically braided by three metal guide wires, and the top end of the rigid guide wire (21) is three evenly distributed positioning hooks (24).

Images