Disposable pulmonary nodule puncture needle capable of being repeatedly positioned

Abstract

The utility model discloses a disposable repositionable pulmonary nodule puncture needle which comprises a handle and a puncture needle body, the puncture needle body is fixed in the handle, a pull rope is connected in the puncture needle body in a penetrating mode, the end of the pull rope is connected with a positioning hook, the other side of the handle is connected with a pushing device, and the pushing device is used for pushing out the positioning hook. The positioning hook is contracted in the puncture needle, during use, the positioning hook is ejected out of the puncture needle, a side hole is formed in the side, close to the end, of the puncture needle, during repositioning, the pull rope is connected into the side hole in a penetrating mode, the puncture needle is guided through the pull rope, the puncture needle is sleeved on the positioning hook again, and the positioning hook is contracted. The problem that an existing puncture needle cannot be repositioned is solved, the side hole is formed in the side, close to the end, of the puncture needle, the puncture needle is guided through the pull rope, the puncture needle can be arranged on the positioning hook in a sleeving mode again along the pull rope, the positioning hook is contracted, and repositioning or removing of the positioning hook is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of puncture needles, in particular to a disposable and repositionable lung nodule puncture needle. Background Art

[0002] After positioning, the existing puncture needle must remove the located tissue, leaving no room for error and unable to meet the need for repeated positioning of the wire anchor hook during clinical surgery.

[0003] Because during the initial positioning, the positioning accuracy of the puncture needle may be affected by respiratory movement or changes in the position of the lung nodule, and repositioning may be required due to surgical operation problems. Therefore, a lung nodule puncture needle that can be repeatedly positioned is needed. Utility Model Content

[0004] The utility model aims to provide a disposable and repositionable lung nodule puncture needle.

[0005] The utility model provides the following technical solution: a disposable and repositionable pulmonary nodule puncture needle, comprising a handle and a puncture needle, wherein the puncture needle is fixed in the handle, a drawstring is passed through the puncture needle, the end of the drawstring is connected to a positioning hook, and a pushing device is connected to the other side of the handle, and the pushing device is used to push the positioning hook out. Before use, the positioning hook is retracted in the puncture needle, and during use, the positioning hook is pushed out from the puncture needle. A side hole is provided near the end of the puncture needle. During repositioning, the drawstring is passed through the side hole, and the puncture needle is guided by the drawstring, and the puncture needle is re-sheathed on the positioning hook to retract the positioning hook.

[0006] In order to push the positioning hook out of the puncture needle, the pushing device includes a pushing shell, the pushing shell is connected to a push pin, and the push pin is inserted into the puncture needle.

[0007] In order to limit the position of the pushing shell, a limiting buckle is sleeved on one end of the handle, and the pushing shell is sleeved on the limiting buckle, and the limiting buckle is used to limit the position of the pushing shell.

[0008] In order to further control the movement stroke of the pushing shell, the height of the limiting buckle is higher than the height of the pushing shell, and the inner diameter of the pushing shell is larger than the diameter of the limiting buckle.

[0009] In order to control the puncture depth of the puncture needle, a scale is formed on the surface of the puncture needle.

[0010] In order to make the positioning hook bend automatically, the positioning hook is made of memory metal.

[0011] Compared with the prior art, the beneficial effect achieved by the present invention is as follows: by opening a side hole on the puncture needle, the pull rope is passed through the side hole, and the pull rope is used to guide the puncture needle so that the puncture needle can be punctured again along the pull rope to the positioning hook, and the puncture needle is used to shrink the positioning hook. After the positioning hook shrinks, it will no longer be positioned. At this time, the puncture needle and the retracted positioning hook can be easily pulled out to achieve damage-free movement, or repositioned, and the positioning hook can be pushed out again using the pushing device to complete the positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a cross-sectional view of the overall structure of the utility model;

[0014] Figure 2 This is a diagram of the repositioned use state of the utility model;

[0015] Figure 3 It is a partial enlarged schematic diagram of the A area of the present utility model;

[0016] In the figure: 1. Push shell; 2. Ejector pin; 3. Puncture needle; 31. Side hole; 4. Handle; 5. Pull rope; 6. Positioning hook; 7. Limit buckle. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example

[0019] See also Figures 1 to 3The utility model provides a technical solution: a disposable and repositionable pulmonary nodule puncture needle, comprising a handle 4 and a puncture needle 3. The puncture needle 3 is fixed in the handle 4. A pull rope 5 is passed through the puncture needle 3. The end of the pull rope 5 is connected to a positioning hook 6. The other side of the handle 4 is connected to a pushing device. The pushing device is used to push the positioning hook 6 out. Before use, the positioning hook 6 is retracted in the puncture needle 3. When in use, the positioning hook 6 is pushed out from the puncture needle 3. The positioning hook 6 is no longer limited by the puncture needle 3. The positioning hook 6 will unfold and hook on the tissue. Then the pushing device is taken out and the puncture needle 3 is pulled out. In this way, the pull rope will be retained In the lung, a side hole 31 is opened near the end side of the puncture needle 3. When repositioning, the pull rope 5 is connected to the side hole 31 on the outside of the tissue, and the puncture needle 3 is guided by the pull rope 5 so that the puncture needle 3 is inserted into the tissue again along the pull rope 5. The puncture needle 3 is put on the positioning hook 6 again, and the puncture needle 3 is used to limit the positioning hook 6 so that the positioning hook 6 is contracted. In this way, the positioning hook 6 is no longer hooked on the tissue, which can change the angle of the puncture needle 3 and the position of the positioning hook 6 to achieve repositioning of the lung nodule puncture needle. The puncture needle 3 and the positioning hook 6 can also be taken out together to achieve damage-free removal of the positioning hook 6.

[0020] The pushing device includes a pushing shell 1, to which a thimble 2 is connected. The thimble 2 is inserted into the puncture needle 3. By moving the pushing shell 1, the position of the thimble 2 in the puncture needle 3 is controlled, so that the thimble 2 can push the positioning hook 6 to move, push the positioning hook 6 out of the puncture needle 3, and expand the positioning hook 6 to hook on the tissue.

[0021] A limit buckle 7 is sleeved on one end of the handle 4, and the push shell 1 is sleeved on the limit buckle 7. The limit buckle 7 is used to limit the push shell 1 to prevent the push shell 1 from being accidentally touched and the positioning hook 6 from being pushed out in advance.

[0022] The height of the limiting buckle 7 is higher than the height of the pushing shell 1, and the inner diameter of the pushing shell 1 is smaller than the diameter of the limiting buckle 7, so that the limiting buckle 7 can limit the moving position of the pushing shell 1, preventing the pushing shell 1 from being able to move by being fastened to the surface of the limiting buckle 7, further limiting the movement stroke of the pushing shell 1.

[0023] A scale is formed on the surface of the puncture needle 3, and the puncture depth of the puncture needle 3 can be visually observed through the scale.

[0024] The positioning hook 6 is made of nickel-titanium memory metal, so that when the positioning hook 6 is not limited by the puncture needle 3, it can automatically bend and hook the tissue to achieve positioning.

[0025] Usage process: First use CT positioning to insert the puncture needle into the tissue, then remove the limit buckle to enable the push device to move, use the push device to drive the ejector to move and push out the positioning hook, so that the positioning hook can position the tissue, then pull out the push device and puncture needle respectively, so that one end of the pull rope is located outside the tissue, completing the initial positioning;

[0026] When repositioning is required, the pull rope is passed through the side hole, and the puncture needle is guided by the pull rope so that the puncture needle is punctured into the tissue again along the pull rope. By puncturing the puncture needle to the positioning hook, the positioning hook is limited and the positioning hook is retracted. In this way, the positioning hook no longer positions the tissue, and the position of the puncture needle can be adjusted again to achieve repositioning. The puncture needle and the positioning hook can also be pulled out to achieve non-destructive removal of the positioning hook.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A disposable, repositionable pulmonary nodule puncture needle, comprising a handle and a puncture needle. The puncture needle is fixed in the handle, a drawstring is threaded through the puncture needle, and a positioning hook is connected to the end of the drawstring. A pushing device is connected to the other side of the handle for pushing out the positioning hook. Before use, the positioning hook is retracted in the puncture needle. During use, the positioning hook is ejected from the puncture needle. The invention is characterized by: A side hole is provided near the end of the puncture needle. When repositioning, the drawstring is passed through the side hole, and the drawstring guides the puncture needle, so that the puncture needle is re-sheathed on the positioning hook to shrink the positioning hook.

2. The disposable, repositionable pulmonary nodule puncture needle according to claim 1, characterized in that: The pushing device comprises a pushing shell, the pushing shell is connected with a thimble, and the thimble is inserted into the puncture needle.

3. The disposable, repositionable pulmonary nodule puncture needle according to claim 2, characterized in that: One end of the handle is sleeved with a limit buckle, and the pushing shell is sleeved on the limit buckle, and the limit buckle is used to limit the pushing shell.

4. The disposable, repositionable pulmonary nodule puncture needle according to claim 3, characterized in that: The height of the limiting buckle is higher than the height of the pushing shell, and the inner diameter of the pushing shell is larger than the diameter of the limiting buckle.

5. The disposable, repositionable pulmonary nodule puncture needle according to claim 1, characterized in that: Scales are formed on the surface of the puncture needle.

6. The disposable, repositionable pulmonary nodule puncture needle according to claim 1, characterized in that: The positioning hook is made of memory metal.

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