CN219940743U - Novel puncture positioning device - Google Patents

Abstract

The utility model discloses a novel puncture positioning device which comprises a puncture needle, a pushing needle and a positioning piece, wherein the pushing needle is slidably inserted into 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 pushing needle. In the initial state, the positioning piece is contracted in the puncture needle, and as the convex points are arranged on the outer periphery side of the pushing needle, the pushing needle is pressed and fixed on the connecting part under the extrusion action of the inner side wall of the puncture needle, namely, the pushing needle and the positioning piece are fixedly connected together. When the puncture needle is specifically used, the puncture needle is punctured to reach a preset position (such as a thyroid nodule position), the pushing needle is pushed forward until the salient points leave the inside of the puncture needle, the salient points are not subjected to extrusion acting force of the inner side wall of the puncture needle any more, the parts wrapping the connecting parts are reset and spring open, the connecting parts in the positioning piece can be easily separated from the inside of the pushing needle, the release of the positioning piece is completed, and the subsequent rapid accurate positioning and focus excision are facilitated.

Description

Novel puncture positioning device

Technical Field

The utility model relates to the technical field of medical auxiliary instruments, in particular to a novel puncture positioning device.

Background

Puncture is a term commonly used in medicine, and is a diagnosis and treatment technology for puncturing a puncture needle into a body cavity to extract secretion for testing, injecting gas or contrast agent into the body cavity for contrast examination, or injecting medicine into the body cavity. In the field of nodular thyroid disease treatment (e.g., thyroid cancer, etc.), surgical excision of focal nodules is a primary treatment modality.

While the treatment of nodular thyroid diseases by surgery, post-operative pathological examination also has considerable technical difficulties for the following reasons: the thyroid lesion nodule has smaller volume, the partial diameter is only 2-3 mm, the thyroid lesion nodule is difficult to distinguish from normal thyroid tissues by naked eyes, and the specific position of the lesion nodule in a postoperative specimen is difficult to determine. Therefore, it is difficult to find the focus nodule rapidly when performing postoperative pathological examination, and repeated pathological tissue sections are required, so that a lot of manpower and time are consumed, and in addition, omission of focus tissues may occur, so that diagnosis is difficult or misdiagnosis is caused.

Therefore, there is a need in the art to provide a thyroid puncture positioning device that has a positioning function and is easy to operate.

Disclosure of Invention

In order to solve the technical problem that the tiny focus after thyroid operation is difficult to find quickly and accurately in the prior art, the utility model provides a novel puncture positioning device, which has the characteristics of simple and reasonable structural design, puncture positioning function, simplicity and convenience in operation and high operation efficiency.

The utility model adopts the technical proposal for solving the problems that:

in a first embodiment of the present utility model, there is provided a novel puncture positioning device comprising:

the puncture needle and the pushing needle are slidably inserted into 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 pushing needle for internal arrangement;

when the protruding point is positioned in the puncture needle, the protruding point is abutted against the inner side wall of the puncture needle so as to tightly press and fix the connecting part in the push needle; when the bump leaves the inside of the puncture needle, the connecting part is separated from the inside of the pushing needle.

Further, the positioning part is an elastic positioning ring, and when the elastic positioning ring is positioned in 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 an annular structure.

Further, a marker is arranged in the positioning part.

Further, the label is a fluorescent agent.

Further, one end of the connecting portion is coated on one end of the positioning portion, and radial tensile force bearable at a connecting portion between the connecting portion and the positioning portion is greater than or equal to 15N.

In a second embodiment of the present utility model, a technical solution is provided regarding specific structural arrangements of the puncture needle holder, the guide rail holder and the push needle holder on the basis of the first embodiment.

The novel puncture positioning device further comprises a puncture needle seat, a guide rail seat and a pushing needle seat, wherein one end of the puncture needle seat is fixedly connected with the puncture needle, the other end of the puncture needle seat is fixedly connected with the guide rail seat, a first cavity is formed in the guide rail seat, the pushing needle seat is slidably arranged in the first cavity, and the pushing needle seat is fixedly connected with the pushing needle.

Further, the puncture needle stand is provided with a concave cavity, the guide rail seat is provided with a protruding part, and the protruding part is inserted into the concave cavity to be fixedly connected with the puncture needle stand.

Further, an assembly port communicated with the first cavity is formed in the guide rail seat, a pushing hand portion is arranged on the pushing needle seat, and the pushing hand portion extends out of the assembly port.

Further, the upper end of the pushing hand part is provided with a limiting bulge, and the limiting bulge is a bulge structure formed by upwards extending and protruding one end of the pushing hand part, which is close to the puncture needle seat.

Further, the upper end of the pushing hand part is also provided with a plurality of convex rib structures which are arranged at intervals.

In summary, compared with the prior art, the novel puncture positioning device provided by the utility model has at least the following technical effects:

the novel puncture positioning device comprises a puncture needle, a pushing needle and a positioning piece, wherein the pushing needle is slidably inserted into 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 pushing needle. In the initial state, the positioning piece is contracted in the puncture needle, and as the convex points are arranged on the outer periphery side of the pushing needle, the pushing needle is pressed and fastened to fix the connecting part of the positioning piece under the extrusion acting force of the inner side wall of the puncture needle, namely, the pushing needle and the positioning piece are fixedly connected together. When the puncture needle is specifically used, the puncture needle is punctured into a patient and reaches a preset position (such as a thyroid nodule position), the pushing needle is pushed forward until the convex point of the pushing needle leaves the inside of the puncture needle, the convex point is not subjected to extrusion acting force of the inner side wall of the puncture needle any more, the part wrapping the connecting part is reset and bounces off, the connecting part in the positioning part can be easily separated from the inside of the pushing needle, the release of the positioning part is finally completed, the positioning part is fixed at the nodule position through the positioning part, and the subsequent rapid and accurate positioning and focus excision can be conveniently and accurately completed.

Drawings

FIG. 1 is a schematic cross-sectional view of a novel puncture positioning device of the present utility model;

FIG. 2 is an enlarged partial schematic view of the portion H shown in FIG. 1;

FIG. 3 is another cross-sectional schematic view of the novel puncture positioning device of the present utility model;

FIG. 4 is an enlarged schematic view of a portion K of FIG. 3;

wherein the reference numerals have the following meanings:

1. a puncture needle stand; 11. a cavity; 2. a puncture needle; 3. a guide rail seat; 31. a first cavity; 32. an assembly port; 33. a boss; 4. pushing the needle stand; 41. pushing the hand; 42. a limit protrusion; 43. a rib; 5. pushing the needle; 51. a bump; 6. a positioning part; 7. and a connecting part.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, 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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Example 1

Referring to fig. 1 and 3, according to a first embodiment of the present utility model, the novel puncture positioning device comprises a puncture needle 2, a push needle 5, and a positioning member, wherein the push needle 5 is slidably inserted into the puncture needle 2, the positioning member comprises a positioning portion 6 and a connecting portion 7 which are fixedly connected with each other, and the connecting portion 7 is inserted into the push needle 5. Wherein, the puncture needle 2 is a rigid tube body structure with an inclined sharp point at the end part and is used for puncturing the human body part so as to provide a channel for the positioning piece to enter the human body. The locating part 6 in the locating part is used for playing a fixing and locating function when the locating part is released at a preset position (such as a focus nodule position), the connecting part 7 is used for connecting the locating part 6 and the pushing needle 5 when the locating part and the pushing needle 5 are positioned in the puncture needle 2, the locating part can be driven to move by pushing the pushing needle 5, and finally the locating part is pushed out of the puncture needle 2, so that the locating part is released.

Referring to fig. 2 and 4, in the technical solution of this embodiment, at least one bump 51 is provided on the outer peripheral side of the pushing needle 5, and when the bump 51 is located inside the puncture needle 2, the bump 51 abuts against the inner sidewall of the puncture needle 2, so that the connection portion 7 is pressed and fixed inside the pushing needle 5. When the bump 51 is separated from the inside of the puncture needle 2, the connecting portion 7 is separated from the inside of the push needle 2. Therefore, the novel puncture positioning device of the utility model has the following working principle:

referring to fig. 1, in the initial state, the positioning member (including the positioning portion 6 and the connecting portion 7) is retracted inside the puncture needle 2, and since at least one protruding point 51 is provided on the outer peripheral side of the pushing needle 5, the pushing needle 5 is pressed against and fixed to the connecting portion 7 of the positioning member under the extrusion force of the inner sidewall of the puncture needle 2, that is, the pushing needle 5 and the positioning member are fixedly connected together, so that the positioning member can be driven to move by pushing the pushing needle 5.

Referring to fig. 2, in specific use, the puncture needle 2 is punctured into a patient and reaches a preset position (such as a thyroid nodule position), the push needle 5 is pushed forward until the protruding point 51 leaves the inside of the puncture needle 2, at this time, the protruding point 51 is no longer subjected to extrusion force of the inner side wall of the puncture needle 2, so that the part of the push needle 5 wrapping the connecting part 7 is reset and bounces off, the connecting part 7 in the positioning part can be easily separated from the inside of the push needle 5, finally, the release of the positioning part is completed, and the positioning part is fixed at the nodule position through the positioning part 6, thereby being convenient for subsequent rapid and accurate positioning and focus excision.

In a preferred version of this embodiment, the positioning portion 6 preferably employs an elastic positioning ring, which is a structure having elastic deformability.

Referring to fig. 2, when the elastic positioning ring is positioned inside the puncture needle 2, the elastic positioning ring is linearly distributed. Specifically, the elastic positioning ring has an annular structure in a relaxed state, and is contracted inside the puncture needle 2 through the memory alloy, so that the elastic positioning ring is linearly distributed.

Referring to fig. 4, when the elastic retainer ring is moved away from the inside of the puncture needle 2, the elastic retainer ring is wound to form a ring-shaped structure. Specifically, when the novel puncture positioning device is used, the pushing needle 5 is pushed forward until the salient point 51 of the pushing needle leaves the inside of the puncture needle 2, so that the pushing needle 5 does not press the connecting part 7 of the positioning piece, and the positioning piece can be easily separated from the inside of the pushing needle 5. At this time, the positioning part 6 of the positioning member is reset and wound to form an annular structure under the condition that the extrusion stress of the puncture needle 2 is lost, and enters the inside of the nodular tissue, so that the positioning member is fixed and positioned, the position of the nodular tissue is conveniently and rapidly positioned, and the focus excision is finished.

In another preferred scheme of the embodiment, a marker is arranged in the positioning part 6 and used for playing a role in position indication, so that the position of the nodule can be conveniently and quickly positioned accurately, puncture operation can be effectively assisted, and operation difficulty is reduced. Furthermore, the marker is a fluorescent agent, and the position of the nodule can be conveniently found by arranging the fluorescent agent.

In another preferred aspect of this embodiment, as shown in fig. 2, one end of the connecting portion 7 is disposed to cover one end of the positioning portion 6, and the radial tension bearable at the connection portion between the connecting portion 7 and the positioning portion 6 is greater than or equal to 15N. Specifically, since the positioning portion 6 plays a role in fixing and positioning, an elastic structure having a large elastic deformation force is required; the connection part 7 has the function of connection and assembly, so that plastic or other rigid structures are needed. Therefore, the positioning portion 6 and the connecting portion 7 are made of different materials, and cannot be made by an integral molding process. The utility model adopts the mode that the connecting part 7 coats the positioning part 6 to realize the connection between the two parts, does not need to arrange an additional auxiliary connecting structure, avoids the situation that the positioning part cannot be contracted in the puncture needle 2, and has simple and reasonable structural design. Further, the utility model can use a high-precision hot-melt extruder to extrude plastic into one end of the positioning part 6 to form the connecting part 7. More specifically, the radial tensile force bearable at the connecting part between the connecting part 7 and the positioning part 6 is greater than or equal to 15N, so that the two are ensured to break or separate during the process of releasing the positioning piece or when being positioned at the nodule position, and the positioning failure is caused.

Example 2

In a second embodiment of the present utility model, a technical solution is provided regarding specific structural arrangements of the puncture needle holder 1, the guide rail holder 3 and the push needle holder 4 on the basis of the first embodiment.

Referring to fig. 1 and 3, in the technical scheme of this embodiment, the novel puncture positioning device further includes a puncture needle holder 1, a guide rail seat 3 and a push needle holder 4, one end of the puncture needle holder 1 is fixedly connected with the puncture needle 2, the other end of the puncture needle holder 1 is fixedly connected with the guide rail seat 3, a first cavity 31 is provided in the guide rail seat 3, the push needle holder 4 is slidably disposed in the first cavity 31, and the push needle holder 4 is fixedly connected with the push needle 5. The first cavity 31 inside the guide rail seat 3 is used for accommodating the pushing needle seat 4 and providing a sliding track for the pushing needle seat 4, and the pushing needle 5 fixedly connected with the pushing needle seat 4 can be driven to reciprocate inside the puncture needle 2 by sliding the pushing needle seat 4. During specific operation, the pushing needle seat 4 is pushed forward by hand until the protruding point 51 of the pushing needle 5 leaves the inside of the puncture needle 2, at the moment, the protruding point 51 is not subjected to extrusion acting force of the inner side wall of the puncture needle 2 any more, so that the part of the pushing needle 5 wrapping the connecting part 7 is reset and bounces off, the connecting part 7 in the positioning piece can be easily separated from the inside of the pushing needle 5, finally, the release of the positioning piece is finished, and the positioning piece is fixed at the position of the nodule through the positioning part 6, so that the follow-up rapid and accurate positioning can be facilitated, and the focus excision can be finished.

In a preferred embodiment of this embodiment, as shown in fig. 1, the puncture needle holder 1 is provided with a cavity 11, the guide rail holder 3 is provided with a protrusion 33, and the protrusion 33 is inserted into the cavity 11 to fixedly connect the puncture needle holder 1 and the guide rail holder 3. Specifically, after the protruding part 33 is inserted into the concave cavity 11 of the puncture needle stand 1, the protruding part 33 and the concave cavity 11 are in clearance fit, so that the puncture needle stand 1 and the guide rail stand 3 are fixedly connected together, other auxiliary connection structures are not required, and the structural design is simple and reasonable.

Referring to fig. 1, in another preferred embodiment of this embodiment, the guide rail seat 3 is provided with an assembling port 32 communicating with the first cavity 31, the push needle seat 4 is provided with a push hand portion 41, and the push hand portion 41 extends out of the assembling port 32. Specifically, in order to facilitate the pushing of the push needle holder 4 by the user by hand, the present utility model is provided with the fitting opening 32 communicating with the first cavity 31 on the guide rail holder 3, and is provided with the pushing hand portion 41 extending out of the fitting opening 32 on the push needle holder 4. Through the above structural design mode, a user can push the hand pushing part 41 to slide forwards or backwards by hand, so that the release operation of the positioning piece in the puncture needle 2 is realized.

Referring to fig. 3, in another preferred embodiment of this embodiment, a limit protrusion 42 is provided at the upper end of the push handle 41, and the limit protrusion 42 is a protrusion structure formed by extending and protruding upward from the end of the push handle 41 near the puncture needle stand 1. Wherein, spacing protruding 42 is used for playing the effect of stopping spacing to the adversary when the user promotes the pushing hands portion 41 forward with the hand to prevent to appear the slippage phenomenon in the in-process of pushing the needle file 4 with the hand, improve the release precision of setting element.

In another preferred version of this embodiment, as shown in fig. 3, the upper end of the push handle 41 is further provided with a plurality of spaced apart rib formations 43. Specifically, the rib structure 43 is a strip-shaped protruding structure arranged at intervals at the upper end of the pushing handle 41, and is used for increasing friction between the hand and the pushing handle 41 when the user pushes the pushing handle 41 by hand, so that an operator can control the forward sliding distance of the pushing needle 5 conveniently, and the release precision of the positioning piece is improved.

In summary, the novel puncture positioning device provided by the utility model comprises the puncture needle 2, the pushing needle 5 and the positioning piece, wherein the pushing needle 5 is slidably inserted into the puncture needle 2, the positioning piece comprises a positioning part 6 and a connecting part 7 which are fixedly connected with each other, and the connecting part 7 is inserted into the pushing needle 5. In the initial state, the positioning piece is contracted in the puncture needle 2, and the convex points 51 are arranged on the periphery side of the pushing needle 5, so that the pushing needle 5 is pressed and fixed on the connecting part 7 of the positioning piece under the extrusion acting force of the inner side wall of the puncture needle 2, namely, the pushing needle 5 and the positioning piece are fixedly connected together. When the puncture needle 2 is particularly used, the puncture needle 2 is punctured into a patient and reaches a preset position (such as a thyroid nodule position), the push needle 5 is pushed forward until the convex point 51 of the puncture needle leaves the inside of the puncture needle 2, the convex point 51 is not subjected to extrusion acting force of the inner side wall of the puncture needle 2, the part of the push needle 5 wrapping the connecting part 7 is reset and bounces off, the connecting part 7 in the positioning part can be easily separated from the inside of the push needle 5, finally, the release of the positioning part is finished, the positioning part is placed at the nodule position through the positioning part 6 of the positioning part, and the focus excision can be conveniently and rapidly and accurately positioned.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. A novel puncture positioning device, comprising:

the puncture needle and the pushing needle are slidably inserted into 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 pushing needle for internal arrangement;

when the protruding point is positioned in the puncture needle, the protruding point is abutted against the inner side wall of the puncture needle so as to tightly press and fix the connecting part in the push needle; when the bump leaves the inside of the puncture needle, the connecting part is separated from the inside of the pushing needle.

2. The novel puncture positioning device according to claim 1, wherein the positioning part is an elastic positioning ring, and the elastic positioning ring is linearly distributed when the elastic positioning ring is positioned in the puncture needle; when the elastic positioning ring leaves the inside of the puncture needle, the elastic positioning ring is wound to form an annular structure.

3. The novel puncture positioning device according to claim 1, wherein a marker is provided inside the positioning portion.

4. The novel puncture positioning device of claim 3, wherein the marker is a fluorescent agent.

5. The novel puncture positioning device according to claim 1, wherein one end of the connecting portion is coated on one end of the positioning portion, and the radial tensile force bearable by the connecting portion and the connecting portion is greater than or equal to 15N.

6. The novel puncture positioning device according to claim 1, further comprising a puncture needle holder, a guide rail holder and a push needle holder, wherein one end of the puncture needle holder is fixedly connected with the puncture needle, the other end of the puncture needle holder is fixedly connected with the guide rail holder, a first cavity is arranged in the guide rail holder, the push needle holder is slidably arranged in the first cavity, and the push needle holder is fixedly connected with the push needle.

7. The novel puncture positioning device according to claim 6, wherein the puncture needle seat is provided with a concave cavity, the guide rail seat is provided with a convex part, and the convex part is inserted into the concave cavity to fixedly connect the puncture needle seat and the guide rail seat.

8. The novel puncture positioning device according to claim 7, wherein the guide rail seat is provided with an assembly port communicated with the first cavity, the pushing needle seat is provided with a pushing hand part, and the pushing hand part extends out of the assembly port.

9. The novel puncture positioning device according to claim 8, wherein a limiting protrusion is arranged at the upper end of the pushing handle part, and the limiting protrusion is a protrusion structure formed by extending and protruding upwards from one end of the pushing handle part, which is close to the puncture needle seat.

10. The novel puncture positioning device according to claim 9, wherein the upper end of the pushing handle part is further provided with a plurality of rib structures which are arranged at intervals.