Puncture needle used in cooperation with electromagnetic navigation system

Abstract

The puncture needle used in cooperation with the electromagnetic navigation system comprises a puncture drainage needle and a puncture guide needle which are detachably connected, the puncture drainage needle comprises an outer needle and a needle handle which are connected, a first through hole communicated with an inner cavity of the outer needle is formed in the needle handle, and a limiting groove is formed in the needle handle; the puncture guide needle comprises an inner needle and a needle base which are connected, a second through hole communicated with an inner cavity of the inner needle is formed in the needle base, the inner needle and the outer needle are sleeved together in a pluggable mode, the end, away from the needle base, of the inner needle is closed, and two electromagnetic coils are sequentially arranged in the inner cavity, close to the closed end, of the inner needle. A coil wire led out from the electromagnetic coil sequentially passes through the inner cavity of the inner needle and the second through hole and then is led out, the coil wire is connected with a plug, and the plug is used for being connected with an electromagnetic navigation system. The puncture needle is convenient to assemble and disassemble, the electromagnetic coil is arranged in the puncture needle, the puncture needle is used in cooperation with an electromagnetic navigation system, the electromagnetic navigation system can track the puncture needle in the magnetic field range, and the precise puncture effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a puncture needle used in conjunction with an electromagnetic navigation system. Background Art

[0002] A puncture needle is a medical device for sampling and injecting tissues of organs in minimally invasive surgeries in multiple departments. The function of the puncture needle is to perform a puncture biopsy. The puncture needle is used to obtain tumor tissues for pathological examination, for cytological and histological examinations to clarify the nature of the tumor, and to provide a basis for formulating clinical treatment strategies. During traditional surgeries, patients need to be exposed to the radiation range for a long time, which poses a radiation risk. And doctors operate through intraoperative images, and the surgical operation and intraoperative imaging are only approximately synchronized. When using a puncture needle, attention should be paid to avoiding lateral damage to adjacent organs or tissues, especially blood vessels and nerves; and the needle extraction and retraction cannot be repeated to avoid the implantation and metastasis of malignant tumor cells, which requires high operating skills for doctors.

[0003] The magnetic navigation surgical system is a new surgical solution for treating surgical diseases, which can help doctors perform various surgical operations more excellently. Based on this, the present application designs a puncture needle used in conjunction with an electromagnetic navigation system. Summary of the Utility Model

[0004] In order to solve the problems existing in the prior art, the present application proposes a puncture needle used in conjunction with an electromagnetic navigation system.

[0005] To achieve the above object, the present application proposes a puncture needle used in conjunction with an electromagnetic navigation system, which includes a detachable puncture drainage needle and a puncture guiding needle. The puncture drainage needle includes an outer needle and a needle handle connected to each other. A first through hole is provided inside the needle handle, and the first through hole communicates with the inner cavity of the outer needle. A limiting groove is provided on the needle handle. The puncture guiding needle includes an inner needle and a needle seat connected to each other. A second through hole is provided inside the needle seat, and the second through hole communicates with the inner cavity of the inner needle. The inner needle and the outer needle are sleeved together in an insertable and extractable manner. When the two are sleeved together, the inner needle is located in the inner cavity of the outer needle and the first through hole. A limiting boss provided on the needle seat is inserted into the limiting groove, and the limiting boss is clamped in the limiting groove, so that the inner needle cannot rotate circumferentially or move axially relative to the outer needle. One end of the inner needle away from the needle seat is closed. Two electromagnetic coils are sequentially provided in the inner cavity of the inner needle near the closed end. The coil wires led out from the electromagnetic coils sequentially pass through the inner cavity of the inner needle and the second through hole in the needle seat and then are led out. The coil wires are connected to a plug, and the plug is used to connect to an electromagnetic navigation system.

[0006] In some embodiments, the outer needle and the needle handle are fixed with UV glue. The outer needle is made of a stainless steel hollow tube, and the needle handle is made of transparent plastic. The inner needle is made of a stainless steel hollow tube, and the needle seat is made of transparent plastic.

[0007] In some embodiments, anti-slip grooves are provided circumferentially on the outer surface of the needle handle.

[0008] The beneficial effect of this solution of the present application is that for the puncture needle used in conjunction with the electromagnetic navigation system, by using the magnetic field generated by the electromagnetic navigation system and the CT data of the patient imported in advance, real-time images can be obtained on the display device of the electromagnetic navigation system. The electromagnetic navigation system can track the puncture needle involved in the present application in real time within the magnetic field range, and thus can display the surgical site and the position of the puncture needle through the electromagnetic navigation system, realizing intraoperative navigation, assisting the doctor to complete the puncture, reducing the risk of infection, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The structural schematic diagram of the puncture needle used in conjunction with the electromagnetic navigation system in the embodiment is shown.

[0010] Figure 2 shows Figure 1 partial exploded schematic diagram of

[0011] Figure 3 The structural schematic diagram of the puncture drainage needle in the embodiment is shown.

[0012] Figure 4 The structural schematic diagram of the needle handle in the embodiment is shown.

[0013] Figure 5 The structural schematic diagram of the puncture guiding needle in the embodiment is shown.

[0014] Figure 6 shows Figure 5 magnified schematic diagram of A in

[0015] Figure 7 The structural schematic diagram of the needle seat in the embodiment is shown.

[0016] Reference numerals: 1 - puncture drainage needle, 2 - puncture guiding needle, 101 - outer needle, 102 - needle handle, 1021 - anti-slip groove, 1022 - limiting groove, 201 - inner needle, 202 - needle seat, 203 - coil wire, 204 - plug, 205 - electromagnetic coil, 2021 - limiting boss. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes the specific embodiments of the present application with reference to the drawings.

[0018] In the description of the present application, it should be understood that the terms "first", "second", etc. are used to distinguish similar objects, rather than to describe or indicate a specific order or sequence. The terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component 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 application.

[0019] As Figures 1 to 7 shown, the puncture needle used in conjunction with the electromagnetic navigation system involved in the present application includes a detachable puncture drainage needle 1 and a puncture guiding needle 2. The puncture drainage needle 1 includes an outer needle 101 and a needle handle 102 connected to each other. Specifically, the two can be fixed with UV glue. The outer needle 101 is made of a stainless steel hollow tube and has specifications such as an outer diameter of 1.2 mm, 1.6 mm, 2 mm, 2.4 mm, etc., and an inner diameter of 0.9 mm, 1.2 mm, 1.6 mm, 2 mm, etc. The needle handle 102 is made of transparent plastic. A first through hole is provided inside the needle handle 102 and is communicated with the inner cavity of the outer needle 101. The diameter of the first through hole is the same as the inner diameter of the outer needle 101 and is used for drainage and sampling. A limiting groove 1022 is provided on the needle handle 102, and an anti-slip groove 1021 is provided on the outer surface of the needle handle 102 along the circumferential direction to facilitate gripping.

[0020] The puncture guiding needle 2 includes an inner needle 201 and a needle seat 202 connected to each other. The inner needle 201 is made of a stainless steel hollow tube and has specifications such as an outer diameter of 0.9 mm, 1.2 mm, 1.6 mm, 2 mm, etc., and an inner diameter of 0.7 mm. The needle seat 202 is made of transparent plastic. A second through hole is provided inside the needle seat 202 and is communicated with the inner cavity of the inner needle 201. The diameter of the second through hole is the same as the inner diameter of the inner needle 201. The inner needle 201 is sleeved with the outer needle 101 in a pluggable manner. When the two are sleeved together, the inner needle 201 is located in the inner cavity of the outer needle 101 and the first through hole. A limiting boss 2021 provided on the needle seat 202 is inserted into the limiting groove 1022, and the limiting boss 2021 is clamped in the limiting groove 1022, so that the inner needle 201 cannot rotate circumferentially or move axially relative to the outer needle 101.

[0021] One end of the inner needle 201 away from the needle base 202 is closed. In the inner cavity of the inner needle 201 near the closed end, two electromagnetic coils 205 are sequentially arranged. In this embodiment, the two electromagnetic coils 205 are fixed in the inner cavity of the inner needle 201 by UV glue. The coil wires 203 led out from the electromagnetic coils 205 sequentially pass through the inner cavity of the inner needle 201 and the second through hole in the needle base 202 and then are led out. The coil wires 203 are connected to the plug 204, and the plug 204 is used to connect to the electromagnetic navigation system.

[0022] During the specific use process, the inner needle 201 and the outer needle 101 are sleeved together. At this time, the limit boss 2021 is clamped in the limit groove 1022, so that the inner needle 201 cannot rotate circumferentially or move axially relative to the outer needle 101. Registration and path planning are completed on the software of the electromagnetic navigation system. The electromagnetic navigation system will automatically identify the position of the puncture needle. Then, puncture is performed according to the real-time position displayed by the electromagnetic navigation system. During puncture, the inner needle 201 and the outer needle 101 jointly complete the puncture action. After puncture is completed, the puncture guide needle 2 is withdrawn, and then the puncture drainage needle 1 can be used for drainage and sampling biopsy.

[0023] The puncture needle involved in the present utility model and used in cooperation with the electromagnetic navigation system has a simple structure, is convenient for assembly and disassembly, is convenient for cleaning, and can reduce the infection risk of the operation; the puncture needle is internally provided with electromagnetic coils, and when used in cooperation with the electromagnetic navigation system, the electromagnetic navigation system can track the puncture needle within the magnetic field range, and can display the position of the surgical site and the puncture needle through the electromagnetic navigation system, realizing intraoperative navigation, guiding the doctor to find the accurate lesion position, and achieving the effect of accurate puncture.

[0024] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution and its concept of the present application, makes equivalent replacement or change, and should be covered within the protection scope of the present application.

Claims

1. A puncture needle used in conjunction with an electromagnetic navigation system, characterized in that: It includes a puncture drainage needle and a puncture guiding needle which are detachably connected. The puncture drainage needle includes an outer needle and a needle handle which are connected. A first through hole is provided inside the needle handle, and the first through hole communicates with the inner cavity of the outer needle. A limiting groove is provided on the needle handle. The puncture guiding needle includes an inner needle and a needle seat which are connected. A second through hole is provided inside the needle seat, and the second through hole communicates with the inner cavity of the inner needle. The inner needle and the outer needle are sleeved together in a pluggable manner. When the two are sleeved together, the inner needle is located in the inner cavity of the outer needle and the first through hole. A limiting boss provided on the needle seat is inserted into the limiting groove, and the limiting boss is clamped in the limiting groove, so that the inner needle cannot rotate circumferentially or move axially relative to the outer needle. One end of the inner needle away from the needle seat is closed, and two electromagnetic coils are sequentially arranged in the inner cavity of the inner needle near the closed end. The coil wires led out from the electromagnetic coils sequentially pass through the inner cavity of the inner needle and the second through hole in the needle seat and then are led out. The coil wires are connected to a plug, and the plug is used to connect to an electromagnetic navigation system.

2. The puncture needle used in conjunction with the electromagnetic navigation system according to claim 1, wherein: The outer needle and the needle handle are fixed by UV glue. The outer needle is made of a stainless steel hollow tube, and the material of the needle handle is transparent plastic. The inner needle is made of a stainless steel hollow tube, and the material of the needle seat is transparent plastic.

3. The puncture needle used in conjunction with an electromagnetic navigation system according to claim 1, wherein: Anti-slip grooves are provided on the outer surface of the needle handle along the circumferential direction.

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