Positioning puncture coaxial needle

Abstract

The utility model discloses a positioning puncture coaxial needle, and belongs to the technical field of medical auxiliary devices. The operation tube is connected to the periphery of the puncture needle; the periphery of the operation pipe is sleeved with two semi-ring plates, one ends of the two semi-ring plates are rotationally connected through a hinge, the other ends of the two semi-ring plates are both connected with side supporting plates, circular channels are formed in the side faces of the side supporting plates, and a bolt with a nut is jointly arranged in the two circular channels; wherein the periphery of one semi-ring plate is connected with a vertical measuring unit, the periphery of the vertical measuring unit is connected with a longitudinal measuring unit, each of the vertical measuring unit and the longitudinal measuring unit comprises an outer circular ring and an inner circular ring, the inner wall of the outer circular ring is rotatably connected with the inner circular ring through a bearing, and the inner wall of the inner circular ring is fixedly connected with a level tube which is transversely arranged. According to the positioning puncture coaxial needle, the use requirement of the vertical measuring unit can be adjusted in advance according to the use requirement, and angle measurement can be carried out before and during use.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical auxiliary devices, in particular to a positioning puncture coaxial needle. Background Technique

[0002] CT-guided puncture biopsy is one of the important methods of minimally invasive biopsy. CT can provide accurate puncture needle insertion points and the location of tumors. However, blocked by bones, blood vessels, and nerves, in many cases, the angle between the needle insertion point and the target destination where the tumor is located forms an angle of one point from two surfaces in the up-down, left-right directions. This angle can be given by CT. Some positioning puncture coaxial needles are designed with angle measurement structures, but they cannot be rotated or flipped, and cannot meet different usage requirements.

[0003] After retrieval, a positioning puncture coaxial needle in a Chinese patent document (authorized announcement number CN209751100U) includes a puncture needle tip, a connecting device, a rigid connecting tube, a disc, a guide pin, a water-filled spherical shell, an annular guide groove, a connecting rod, a pointer, a rotating shaft, and an angle scale; among them: the puncture needle tip is connected to the rigid connecting tube through the connecting device, the rigid connecting tube is fixedly connected with a disc, the disc is provided with an annular guide groove, the disc is pasted with an angle scale, the center of the disc is connected to the upper end of the connecting rod through a rotating shaft, the connecting rod is vertically connected to the pointer, the lower end of the connecting rod is provided with a guide pin, the guide pin is in fit connection with the annular guide groove, and the lower end of the connecting rod is connected with a water-filled spherical shell. In the operation of the utility model, the water droplet is located at the lowest point by gravity, and the pointer can indicate the angle between the current needle tip and the ground, which is convenient for the operator to accurately control the operation angle. The positioning puncture coaxial needle is designed with an angle measurement structure, but it cannot be rotated or flipped, and cannot meet different usage requirements. Content of the Utility Model

[0004] The purpose of the utility model is to provide a positioning puncture coaxial needle to solve the problems raised in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A positioning puncture coaxial needle, comprising:

[0006] A puncture needle;

[0007] An operation tube, connected to the outer periphery of the puncture needle;

[0008] Two semi-circular plates are sleeved on the outer periphery of the operation tube. One end of the two semi-circular plates is rotatably connected through a hinge. The other ends of the two semi-circular plates are both connected with side support plates. A circular channel is opened on the side surface of the side support plate. A bolt with a nut is jointly arranged in the two circular channels;

[0009] A vertical measuring unit is connected to the outer periphery of one of the semi-circular plates, and a longitudinal measuring unit is connected to the outer periphery of the vertical measuring unit. Both the vertical measuring unit and the longitudinal measuring unit include an outer ring and an inner ring. The inner wall of the outer ring is rotatably connected to the inner ring through a bearing. A horizontally arranged spirit level is fixedly connected to the inner wall of the inner ring. The bottom end of the spirit level is connected to a counterweight rod, and a pointer is connected to the side of the counterweight rod. Scale lines are provided on the outer periphery of the outer ring.

[0010] As a preferred embodiment, two hand-held rings for facilitating the user's operation are connected to the outer periphery of the operating tube, and anti-slip patterns are provided on the inner walls of the hand-held rings.

[0011] As a preferred embodiment, the puncture needle is of a hollow structure, and an inner needle for coaxial positioning operation is provided in the inner cavity of the puncture needle.

[0012] As a preferred embodiment, a power member for pushing the inner needle to move is connected to the end of the inner needle.

[0013] As a preferred embodiment, scale lines corresponding to the positions of the semi-circular plates are provided on the outer periphery of the operating tube, and the pointer is on one side of the outer ring.

[0014] As a preferred embodiment, elastic rubber pads are bonded to the inner walls of both semi-circular plates.

[0015] As a preferred embodiment, the orientation of the vertical measuring unit and the orientation of the longitudinal measuring unit are skew perpendicular to each other.

[0016] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0017] For this positioning puncture coaxial needle, according to the angle requirements of use and operation, the angle of the semi-circular plate can be adjusted in advance. Through the scale of the scale lines, the angle between the vertical measuring unit and the hand-held ring can be understood, so that the vertical measuring unit is in a vertical state, which is convenient for angle measurement during subsequent use.

[0018] For this positioning puncture coaxial needle, the vertical measuring unit can measure the angle between the puncture needle and the skin, and the longitudinal measuring unit can measure the flipping angle of the puncture needle during the puncture process, or can prevent its flipping, ensuring the accuracy of the needle insertion.

[0019] For this positioning puncture coaxial needle, not only can the use requirements of the vertical measuring unit be adjusted in advance according to the use needs, but also the angle can be measured before and during use. Description of the Drawings

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the present invention;

[0022] Figure 2 It is a partial cross-sectional view of the puncture needle of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the semi-circular plate, vertical measurement unit and longitudinal measurement unit of the present invention.

[0024] Explanation of reference numerals:

[0025] In the figure:

[0026] 1. Puncture needle; 2. Operating tube; 3. Semi-circular plate; 4. Side support plate; 5. Bolt; 6. Outer ring; 7. Inner ring; 8. Level tube; 9. Counterweight rod; 10. Pointer; 11. Hand-held ring; 12. Inner needle; 13. Power component; 14. Rubber pad;

[0027] 21. Vertical measurement unit; 22. Longitudinal measurement unit. Specific embodiments

[0028] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some well-known technical features in the art are not described.

[0029] Unless otherwise defined, the up, down, left, right, front, back, inner and outer directions involved in this article are based on the up, down, left, right, front, back, inner and outer directions in the figures shown in the present invention, and are hereby explained together.

[0030] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., according to actual needs.

[0031] Please refer to Figures 1 to 3 As shown, a positioning puncture coaxial needle, this embodiment includes:

[0032] Puncture needle 1, the length and shape of the puncture needle 1 are selected according to actual use needs;

[0033] The operating tube 2 is connected to the outer periphery of the puncture needle 1;

[0034] Two semi-circular plates 3 are sleeved on the outer periphery of the operating tube 2. Elastic rubber pads 14 are bonded to the inner walls of the two semi-circular plates 3. Scale lines corresponding to the positions of the semi-circular plates 3 are provided on the outer periphery of the operating tube 2. The pointer 10 is located on one side of the outer ring 6. One end of the two semi-circular plates 3 is rotatably connected by a hinge. The other ends of the two semi-circular plates 3 are both connected with side support plates 4. Circular channels are formed on the side surfaces of the side support plates 4. A bolt 5 with a nut is commonly arranged in the two circular channels. According to the required angles of use and operation, the angle of the semi-circular plate 3 can be adjusted in advance. Through the scale of the scale line, the angle between the vertical measuring unit 21 and the holding ring 11 can be understood. Then, the bolt 5 is rotated to fix the two side support plates 4, so that the semi-circular plate 3 is fixed.

[0035] In order to measure the angle, a vertical measuring unit 21 is connected to the outer periphery of one of the semi-circular plates 3. A longitudinal measuring unit 22 is connected to the outer periphery of the vertical measuring unit 21. The orientations of the vertical measuring unit 21 and the longitudinal measuring unit 22 are skew perpendicular to each other. Both the vertical measuring unit 21 and the longitudinal measuring unit 22 include an outer ring 6 and an inner ring 7. The inner wall of the outer ring 6 is rotatably connected to the inner ring 7 through a bearing. A horizontally arranged spirit level 8 is fixedly connected to the inner wall of the inner ring 7. A counterweight rod 9 is connected to the bottom end of the spirit level 8. A pointer 10 is connected to the side surface of the counterweight rod 9. When the angle changes, due to its own weight, the counterweight rod 9 is in the facing state but will rotate relative to the outer ring 6. The position indicated by the pointer 10 is the angle of inclination and flipping. Scale lines are provided on the outer periphery of the outer ring 6. The finger holds the holding ring 11 to make the puncture needle 1 in an inclined state, so that the puncture needle 1 is aligned with the puncture position. The angle between the puncture needle 1 and the skin is measured from the angle locked by the pointer 10 of the vertical measuring unit 21. The pointer 10 of the longitudinal measuring unit 22 can measure the flipping angle of the puncture needle 1 during the puncture process or can prevent its flipping to ensure the accuracy of the needle insertion.

[0036] For operation, two holding rings 11 convenient for the user to operate are connected to the outer periphery of the operating tube 2. Anti-slip patterns are provided on the inner walls of the holding rings 11. The puncture needle 1 is of a hollow structure. An inner needle 12 for coaxial positioning operation is arranged in the inner cavity of the puncture needle 1. The inner needle 12 is a general structure and can be replaced with the specified structure and equipment according to actual needs. A power member 13 for pushing the inner needle 12 to move is connected to the end of the inner needle 12. The power member 13 can be designed as a push plate, similar to a syringe. The power member 13 can also be designed as an elastic impact part. During use, the finger holds the holding ring 11 to make the puncture needle 1 in an inclined state, so that the puncture needle 1 is aligned with the puncture position.

[0037] Working principle

[0038] For this positioning and puncturing coaxial needle, according to the angle requirements of use and operation, the angle of the semi-circular plate 3 can be adjusted in advance. By the scale of the scale line, the angle between the vertical measuring unit 21 and the hand-held ring 11 can be understood. Then, turn the bolt 5 to fix the two side support plates 4, so that the semi-circular plate 3 is fixed. When in use, hold the hand-held ring 11 with fingers to make the puncture needle 1 in an inclined state, align the puncture needle 1 with the puncture position, measure the angle between the puncture needle 1 and the skin from the angle locked by the pointer 10 of the vertical measuring unit 21. The pointer 10 of the longitudinal measuring unit 22 can measure the turning angle of the puncture needle 1 during the puncture process, or can prevent its turning to ensure the accuracy of the needle insertion.

[0039] It should be noted that in this article, relational terms such as "one" and "two" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning puncture coaxial needle, characterized in that: include: Puncture needle (1); An operating tube (2) connected to the outer periphery of the puncture needle (1); Two semi-ring plates (3) are sleeved on the outer circumference of the operating tube (2), one end of the two semi-ring plates (3) is rotatably connected via a hinge, and the other end of the two semi-ring plates (3) is connected to a side support plate (4), a circular channel is provided on the side of the side support plate (4), and bolts (5) with nuts are provided in both circular channels; A vertical measuring unit (21) is connected to the outer periphery of one of the semi-ring plates (3), and a longitudinal measuring unit (22) is connected to the outer periphery of the vertical measuring unit (21). Both the vertical measuring unit (21) and the longitudinal measuring unit (22) comprise an outer circular ring (6) and an inner circular ring (7). The inner wall of the outer circular ring (6) is rotatably connected to the inner circular ring (7) via a bearing. The inner wall of the inner circular ring (7) is fixedly connected to a transversely arranged level tube (8). The bottom end of the level tube (8) is connected to a counterweight rod (9), and a pointer (10) is connected to the side of the counterweight rod (9). Scale lines are arranged on the outer periphery of the outer circular ring (6).

2. A positioning puncture coaxial needle according to claim 1, characterized in that: The outer circumference of the operating tube (2) is connected to two hand-held rings (11) for easy operation by a user, and the inner walls of the hand-held rings (11) are provided with anti-slip grooves.

3. A positioning puncture coaxial needle according to claim 1, characterized in that: The puncture needle (1) is a hollow structure, and the inner cavity of the puncture needle (1) is provided with an inner needle (12) used for coaxial positioning operation.

4. A positioning puncture coaxial needle according to claim 3, characterized in that: The end of the inner needle (12) is connected to a power piece (13) for pushing the inner needle (12) to move.

5. The positioning puncture coaxial needle according to claim 1, characterized in that: The outer circumference of the operating tube (2) is provided with scale lines corresponding to the position of the semi-ring plate (3), and the pointer (10) is located on one side of the outer ring (6).

6. The positioning puncture coaxial needle according to claim 1, characterized in that: Elastic rubber pads (14) are bonded to the inner walls of the two semi-ring plates (3).

7. The positioning puncture coaxial needle according to claim 1, characterized in that: The orientation of the vertical measurement unit (21) and the orientation of the longitudinal measurement unit (22) are skewed and perpendicular.

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