A new puncture positioning device

Abstract

The application discloses a novel puncture positioning device, which comprises a puncture needle, a pushing needle and a positioning piece. The pushing needle is slidably inserted into the interior of the puncture needle. The positioning piece comprises a positioning part and a connecting part which are fixedly connected with each other, and the connecting part is inserted into the interior of the pushing needle. In the initial state, the positioning piece is retracted in the interior of the puncture needle. Since the outer circumferential side of the pushing needle is provided with a convex point, the pushing needle is pressed and fixed to the connecting part under the extrusion of the inner side wall of the puncture needle, namely, the pushing needle and the positioning piece are fixedly connected together. In the specific use, the puncture needle is punctured to reach a preset position (for example, a thyroid nodule position), and the pushing needle is pushed forward until the convex point leaves the interior of the puncture needle. At this time, the part wrapping the connecting part is reset and bounced away without the extrusion force of the inner side wall of the puncture needle, so that the connecting part in the positioning piece can be easily separated from the interior of the pushing needle, the release of the positioning piece is completed, and subsequent rapid and accurate positioning and lesion resection are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical auxiliary apparatus, in particular to a novel puncture positioning device. BACKGROUND

[0002] Puncture is a medical common surgical term, which is a kind of diagnosis and treatment technology that puncture needle is inserted into body cavity to extract secretion for testing, inject gas or contrast medium into body cavity for contrast examination, or inject drug into body cavity. In the field of nodular thyroid disease treatment (such as thyroid cancer), surgical resection of lesion nodules is the primary treatment method.

[0003] While treating nodular thyroid disease by surgical operation, postoperative pathological examination also has considerable technical difficulty, because: the volume of thyroid lesion nodules is small, part of which is only 2-3mm in diameter, which is difficult to distinguish from normal thyroid tissue by naked eye, and the specific position of lesion nodules in postoperative specimen is difficult to determine. Therefore, it is difficult to quickly find the lesion nodules during postoperative pathological examination, repeated pathological tissue sections need to be performed, thereby consuming a large amount of manpower and time, and in addition, the omission of lesion tissue may occur, causing diagnosis difficulty or misdiagnosis.

[0004] Therefore, there is an urgent need in the prior art to invent a thyroid puncture positioning device with positioning function and convenient operation. SUMMARY

[0005] In order to overcome the technical problems of the prior art that it is difficult to quickly and accurately find the small lesion of thyroid postoperation, the present application provides a novel puncture positioning device, which has the characteristics of simple and reasonable structure design, puncture positioning function, simple operation and high operation efficiency.

[0006] The technical scheme adopted by the present application to solve the problems is:

[0007] In the first embodiment of the present application, a novel puncture positioning device is provided, which comprises:

[0008] A puncture needle and a push needle, the push needle is slidably inserted into the inside of the puncture needle;

[0009] A positioning member, the positioning member comprises a positioning part and a connecting part which are fixedly connected with each other, and the connecting part is inserted into the inside of the push needle;

[0010] Wherein, the outer circumferential side of the push needle is provided with a protruding point, when the protruding point is located in the inside of the puncture needle, the protruding point and the inner side wall of the puncture needle abut to press and fix the connecting part in the inside of the push needle; when the protruding point leaves the inside of the puncture needle, the connecting part is separated from the inside of the push needle.

[0011] Furthermore, the positioning part is an elastic positioning ring. When the elastic positioning ring is inside the puncture needle, the elastic positioning ring is distributed in a straight line; when the elastic positioning ring leaves the inside of the puncture needle, the elastic positioning ring is wound to form a ring structure.

[0012] Furthermore, the positioning part is provided with a marker inside.

[0013] Furthermore, the marker is a fluorescent agent.

[0014] Furthermore, one end of the connecting portion covers one end of the positioning portion, and the radial tensile force that the connecting portion and the positioning portion can withstand is greater than or equal to 15N.

[0015] In the second embodiment of the present invention, a technical solution is provided based on the first embodiment regarding the specific structural configuration of the puncture needle hub, guide rail hub, and push needle hub.

[0016] The novel puncture positioning device further includes a puncture needle seat, a guide rail seat, and a push needle seat. One end of the puncture needle seat is fixedly connected to the puncture needle, and the other end is fixedly connected to the guide rail seat. The guide rail seat has a first cavity inside, and the push needle seat is slidably disposed in the first cavity, and the push needle seat and the push needle are fixedly connected.

[0017] Furthermore, the puncture needle seat has a recessed cavity, and the guide rail seat has a protrusion. The protrusion is inserted into the recessed cavity to fix the puncture needle seat and the guide rail seat together.

[0018] Furthermore, the guide rail seat is provided with an assembly port communicating with the first cavity, and the push needle seat is provided with a pusher portion, which extends out of the assembly port.

[0019] Furthermore, the upper end of the pusher is provided with a limiting protrusion, which is a protrusion structure formed by the end of the pusher near the puncture needle seat extending upward.

[0020] Furthermore, the upper end of the pusher is provided with several spaced-apart protruding ridge structures.

[0021] In summary, the novel puncture positioning device provided by this invention has at least the following technical advantages compared to the prior art:

[0022] The novel puncture positioning device provided by this invention includes a puncture needle, a pusher needle, and a positioning element. The pusher needle is slidably inserted inside the puncture needle. The positioning element includes a positioning part and a connecting part that are fixedly connected to each other. The connecting part is inserted into the pusher needle. In the initial state, the positioning element is retracted inside the puncture needle. Because the outer periphery of the pusher needle has a protrusion, the pusher needle is pressed and fixed to the connecting part of the positioning element under the squeezing force of the inner wall of the puncture needle, that is, the pusher needle and the positioning element are fixedly connected together. In specific use, the puncture needle is inserted into the patient's body and reaches the preset position (e.g., the location of a thyroid nodule). The pusher needle is pushed forward until its protrusion leaves the interior of the puncture needle. At this time, the protrusion is no longer subject to the squeezing force of the inner wall of the puncture needle, and the part covering the connecting part is reset and springs open. The connecting part in the positioning element can then easily detach from the interior of the pusher needle, thus completing the release of the positioning element. The positioning element is fixed at the nodule location by its positioning part, which facilitates subsequent rapid and accurate positioning and lesion resection. Attached Figure Description

[0023] Figure 1 This is a cross-sectional schematic diagram of the novel puncture positioning device of the present invention;

[0024] Figure 2 for Figure 1 The diagram shows a partially enlarged view of section H.

[0025] Figure 3 This is another cross-sectional schematic diagram of the novel puncture positioning device of the present invention;

[0026] Figure 4 for Figure 3 The diagram shows a partially enlarged view of part K.

[0027] The meanings of the reference numerals in the attached figures are as follows:

[0028] 1. Puncture needle seat; 11. Cavity; 2. Puncture needle; 3. Guide rail seat; 31. First cavity; 32. Assembly port; 33. Protrusion; 4. Push needle seat; 41. Push handle; 42. Limiting protrusion; 43. Protrusion; 5. Push needle; 51. Protrusion; 6. Positioning part; 7. Connecting part. Detailed Implementation

[0029] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0032] Example 1

[0033] See Figure 1 and Figure 3 As shown, according to a first embodiment of the present invention, the novel puncture positioning device includes a puncture needle 2, a pusher needle 5, and a positioning element. The pusher needle 5 is slidably inserted inside the puncture needle 2. The positioning element includes a positioning part 6 and a connecting part 7 fixedly connected to each other, with the connecting part 7 inserted inside the pusher needle 5. The puncture needle 2 is a rigid tubular structure with an inclined, sharp tip at its end, used for puncturing human body parts, thereby providing a channel for the positioning element to enter the human body. The positioning part 6 of the positioning element serves to fix and position the positioning element when it is released to a preset position (e.g., the location of a lesion or nodule). The connecting part 7 connects the positioning part 6 and the pusher needle 5 when they are inside the puncture needle 2, ensuring that the positioning element can be moved by pushing the pusher needle 5, ultimately pushing the positioning element out of the puncture needle 2, thus completing the release of the positioning element.

[0034] See Figure 2 and Figure 4 As shown, in this embodiment, the outer periphery of the push needle 5 is provided with at least one protrusion 51. When the protrusion 51 is located inside the puncture needle 2, the protrusion 51 abuts against the inner wall of the puncture needle 2, thereby pressing and fixing the connecting part 7 inside the push needle 5. When the protrusion 51 leaves the inside of the puncture needle 2, the connecting part 7 disengages from the inside of the push needle 2. Therefore, the working principle of the novel puncture positioning device of the present invention is as follows:

[0035] See Figure 1As shown, in the initial state, the positioning element (including the positioning part 6 and the connecting part 7) is retracted inside the puncture needle 2. Since the outer periphery of the push needle 5 is provided with at least one protrusion 51, the push needle 5 is pressed and fixed to the connecting part 7 of the positioning element under the squeezing force of the inner wall of the puncture needle 2, that is, the push needle 5 and the positioning element are fixedly connected together, so as to ensure that the positioning element can be moved by pushing the push needle 5.

[0036] See Figure 2 As shown, in specific use, the puncture needle 2 is inserted into the patient's body and reaches the preset position (e.g., the position of the thyroid nodule). The pusher needle 5 is pushed forward until its protrusion 51 leaves the interior of the puncture needle 2. At this time, the protrusion 51 is no longer subjected to the squeezing force of the inner wall of the puncture needle 2, and the part of the pusher needle 5 that wraps the connecting part 7 is reset and springs open. The connecting part 7 in the positioning member can then easily detach from the interior of the pusher needle 5, and finally the positioning member is released. The positioning member is fixed at the position of the nodule by its positioning part 6, which facilitates subsequent rapid and accurate positioning and lesion resection.

[0037] In a preferred embodiment, the positioning part 6 preferably adopts an elastic positioning ring, which is a structure with elastic deformation capability.

[0038] See Figure 2 As shown, when the elastic positioning ring is located inside the puncture needle 2, the elastic positioning ring is distributed in a straight line. Specifically, the elastic positioning ring has a ring structure in the relaxed state, and the shape memory alloy shrinks the elastic positioning ring inside the puncture needle 2, thereby making it distributed in a straight line.

[0039] See Figure 4 As shown, when the elastic positioning ring leaves the interior of the puncture needle 2, it coils into a ring structure. Specifically, when using this new puncture positioning device, the push needle 5 is pushed forward until its protrusion 51 leaves the interior of the puncture needle 2, so that the push needle 5 no longer presses against the connecting part 7 of the fixing positioning member, and the positioning member can easily detach from the interior of the push needle 5. At this time, the positioning part 6 of the positioning member, under the loss of the compressive stress of the puncture needle 2, resets and coils into a ring structure, and enters the interior of the nodule tissue, completing the fixing and positioning of the positioning member, which facilitates subsequent rapid and accurate positioning of the nodule and completion of lesion resection.

[0040] In another preferred embodiment, the positioning part 6 is provided with a marker inside. This marker serves as a position indicator, facilitating quick and accurate location of the nodule and effectively assisting the puncture operation, thus reducing the difficulty of the procedure. Furthermore, the marker is a fluorescent agent; by using a fluorescent agent, the location of the nodule can be easily found.

[0041] See Figure 2As shown, in another preferred embodiment, one end of the connecting part 7 covers one end of the positioning part 6, and the radial tensile force that the connection between the connecting part 7 and the positioning part 6 can withstand is greater than or equal to 15N. Specifically, since the positioning part 6 plays a fixing and positioning role, it needs to be an elastic structure with a large elastic deformation force; while the connecting part 7 plays a connecting and assembling role, it needs to be made of plastic or other rigid structures. Therefore, the positioning part 6 and the connecting part 7 need to be made of different materials, and they cannot be made using an integral molding process. The present invention uses the method of the connecting part 7 covering the positioning part 6 to achieve the connection between the two, without the need to set up an additional auxiliary connecting structure, avoiding the inability to retract the positioning part inside the puncture needle 2, and the structural design is simple and reasonable. Furthermore, the present invention can use a high-precision hot melt extruder to extrude plastic onto one end of the positioning part 6 to form the connecting part 7. More specifically, the radial tensile force that the connection between the connecting part 7 and the positioning part 6 can withstand is greater than or equal to 15N, ensuring that the two do not break or detach during the release of the positioning part or when positioned at the nodule position, thus preventing positioning failure.

[0042] Example 2

[0043] In the second embodiment of the present invention, a technical solution is provided based on the first embodiment regarding the specific structural configuration of the puncture needle seat 1, the guide rail seat 3, and the push needle seat 4.

[0044] See Figure 1 and Figure 3 As shown, in this embodiment, the novel puncture positioning device further includes a puncture needle seat 1, a guide rail seat 3, and a push needle seat 4. One end of the puncture needle seat 1 is fixedly connected to the puncture needle 2, and the other end of the puncture needle seat 1 is fixedly connected to the guide rail seat 3. The guide rail seat 3 has a first cavity 31 inside, and the push needle seat 4 is slidably disposed in the first cavity 31, and the push needle seat 4 and the push needle 5 are fixedly connected. The first cavity 31 inside the guide rail seat 3 is used to accommodate the push needle seat 4 and provide a sliding track for the push needle seat 4. By sliding the push needle seat 4, the push needle 5, which is fixedly connected to it, can be driven to reciprocate inside the puncture needle 2. In specific operation, push the push needle seat 4 forward by hand until the protrusion 51 of the push needle 5 leaves the inside of the puncture needle 2. At this time, the protrusion 51 is no longer squeezed by the inner wall of the puncture needle 2, and the part of the push needle 5 that wraps the connecting part 7 is reset and popped open. The connecting part 7 in the positioning member can be easily separated from the inside of the push needle 5, and the positioning member is finally released. The positioning member is fixed in the position of the nodule by its positioning part 6, which facilitates the subsequent quick and accurate positioning and completion of lesion resection.

[0045] See Figure 1As shown, in a preferred embodiment, the puncture needle holder 1 has a recess 11, and the guide rail seat 3 has a protrusion 33. The protrusion 33 is inserted into the recess 11 to fix the puncture needle holder 1 and the guide rail seat 3 together. Specifically, after the protrusion 33 is inserted into the recess 11 of the puncture needle holder 1, the protrusion 33 and the recess 11 are in clearance fit, thereby fixing the puncture needle holder 1 and the guide rail seat 3 together. No other auxiliary connection structures are required, and the structural design is simple and reasonable.

[0046] See Figure 1 As shown, in another preferred embodiment, the guide rail 3 has an assembly port 32 communicating with the first cavity 31, and the push needle seat 4 has a pusher part 41 extending out of the assembly port 32. Specifically, to facilitate the user to push the push needle seat 4 by hand, the present invention has an assembly port 32 communicating with the first cavity 31 on the guide rail 3, and a pusher part 41 extending out of the assembly port 32 on the push needle seat 4. With the above structural design, the user can push the pusher part 41 forward or backward by hand to release the positioning element inside the puncture needle 2.

[0047] See Figure 3 As shown, in another preferred embodiment, the upper end of the pusher part 41 is provided with a limiting protrusion 42. The limiting protrusion 42 is a protrusion structure formed by the end of the pusher part 41 near the puncture needle seat 1 extending upward. The limiting protrusion 42 is used to block and limit the hand when the user pushes the pusher part 41 forward, thereby preventing slippage during the process of pushing the pusher needle seat 4 and improving the release accuracy of the positioning component.

[0048] See Figure 3 As shown, in another preferred embodiment, the upper end of the pusher part 41 is further provided with a plurality of spaced-apart protruding ridge structures 43. Specifically, the protruding ridge structures 43 are strip-shaped protrusions spaced-apart at the upper end of the pusher part 41, which are used to increase the friction between the hand and the pusher part 41 when the user pushes the pusher part 41 by hand, thereby making it easier for the operator to control the distance the pusher needle 5 slides forward and improving the release accuracy of the positioning component.

[0049] In summary, the novel puncture positioning device provided by this invention includes a puncture needle 2, a pusher needle 5, and a positioning component. The pusher needle 5 is slidably inserted inside the puncture needle 2. The positioning component includes a positioning part 6 and a connecting part 7 that are fixedly connected to each other. The connecting part 7 is inserted into the interior of the pusher needle 5. In the initial state, the positioning component is retracted inside the puncture needle 2. Since the pusher needle 5 has a protrusion 51 on its outer periphery, the pusher needle 5 is pressed and fixed to the connecting part 7 of the positioning component under the squeezing force of the inner wall of the puncture needle 2, that is, the pusher needle 5 and the positioning component are fixedly connected together. In practical use, the puncture needle 2 is inserted into the patient's body and reaches the preset position (e.g., the position of the thyroid nodule). The pusher needle 5 is pushed forward until its protrusion 51 leaves the interior of the puncture needle 2. At this time, the protrusion 51 is no longer subjected to the squeezing force of the inner wall of the puncture needle 2, and the part of the pusher needle 5 that wraps the connecting part 7 is reset and popped open. The connecting part 7 in the positioning member can then be easily detached from the interior of the pusher needle 5, and the positioning member is finally released. The positioning member is placed at the nodule position through its positioning part 6, which facilitates the subsequent quick and accurate positioning and removal of the lesion.

[0050] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A novel puncture positioning device, characterized in that, include: A puncture needle and a pusher needle, wherein the pusher needle is slidably inserted inside the puncture needle; A positioning component, comprising a positioning part and a connecting part fixedly connected to each other, wherein the connecting part is inserted into the interior of the push pin; The outer periphery of the push needle is provided with a protrusion. When the protrusion is inside the puncture needle, the protrusion abuts against the inner wall of the puncture needle to press and fix the connecting part inside the push needle, so that the push needle and the positioning member are fixedly connected together. When the protrusion leaves the inside of the puncture needle, the protrusion is no longer subjected to the squeezing force of the inner wall of the puncture needle, and the part of the push needle that wraps the connecting part returns to its original position and springs open, and the connecting part disengages from the inside of the push needle. The positioning part is an elastic positioning ring. When the elastic positioning ring is inside the puncture needle, the elastic positioning ring is distributed in a straight line. When the elastic positioning ring leaves the inside of the puncture needle, the elastic positioning ring is rolled up to form a ring structure. The positioning part has a marker inside.

2. The novel puncture positioning device according to claim 1, characterized in that, The marker is a fluorescent agent.

3. The novel puncture positioning device according to claim 1, characterized in that, One end of the connecting part covers one end of the positioning part, and the radial tensile force that the connecting part and the positioning part can withstand is greater than or equal to 15N.

4. The novel puncture positioning device according to claim 1, characterized in that, The novel puncture positioning device also includes a puncture needle seat, a guide rail seat, and a push needle seat. One end of the puncture needle seat is fixedly connected to the puncture needle, and the other end is fixedly connected to the guide rail seat. The guide rail seat has a first cavity inside, and the push needle seat is slidably disposed in the first cavity, and the push needle seat and the push needle are fixedly connected.

5. The novel puncture positioning device according to claim 4, characterized in that, The puncture needle seat has a recessed cavity, and the guide rail seat has a protrusion. The protrusion is inserted into the recessed cavity to fix the puncture needle seat and the guide rail seat together.

6. The novel puncture positioning device according to claim 5, characterized in that, The guide rail seat is provided with an assembly port that communicates with the first cavity, and the push needle seat is provided with a pusher part that extends out of the assembly port.

7. The novel puncture positioning device according to claim 6, characterized in that, The upper end of the pusher is provided with a limiting protrusion, which is a protrusion structure formed by the end of the pusher near the puncture needle seat extending upward.

8. The novel puncture positioning device according to claim 7, characterized in that, The upper end of the pusher is also provided with several spaced-apart protruding ridges.

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