Ultrasound-guided puncture needle device

Abstract

The present invention relates to an ultrasonic-guided puncture needle device, which includes a puncture outer needle and a puncture inner needle. The puncture outer needle has a hollow structure, and the puncture inner needle has a solid structure. The puncture outer needle is sleeved on the puncture inner needle and can move relatively freely. On the surface wall of the puncture outer needle near the needle tip, on the side corresponding to the needle tip inclined surface, there are a number of crescent-shaped outer needle grooves protruding towards the needle tip, and the outer needle grooves are arranged obliquely in a manner not perpendicular to the axis of the puncture outer needle. On the surface wall of the puncture inner needle near the needle tip, on the side corresponding to the needle tip inclined surface, there are a number of crescent-shaped inner needle grooves protruding towards the needle tip, and the inner needle grooves are arranged obliquely in a manner not perpendicular to the axis of the puncture inner needle. When the needle tip inclined surfaces of the puncture outer needle and the puncture inner needle are flush, the inclination directions of the outer needle grooves and the inner needle grooves are opposite. The structure of the present invention is ingenious and the design is reasonable, which can greatly increase the reflection cross-section of the entire puncture needle device, is more conducive to ultrasonic reflection, and thus makes the puncture needle device show more clearly under ultrasound.

Description

Technical Field

[0001] The present invention relates to a puncture needle, specifically an ultrasonic-guided puncture needle device, belonging to the technical field of medical devices. Background Art

[0002] Ultrasonic-guided puncture technology is widely used in clinical practice, especially more common in the pain department. Since the puncture needle is often close to dangerous structures such as blood vessels, organs, and spinal cord, and at the same time needs to accurately reach targets such as nerves, good display of the puncture needle under ultrasound becomes particularly important. In the past, puncture needles mostly enhanced the display by manufacturing a reflecting surface on the needle surface, but the actual application effect was not good, with disadvantages such as a large reflecting surface affecting the strength of the puncture needle and a small reflecting surface resulting in little improvement in display. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies existing in the prior art and provide an ultrasonic-guided puncture needle device with a clever structure and reasonable design, which can greatly increase the reflection cross-section of the entire puncture needle device, is more conducive to ultrasonic reflection, and thus makes the puncture needle device display more clearly under ultrasound.

[0004] According to the technical solution provided by the present invention: an ultrasonic-guided puncture needle device, characterized in that: it includes a puncture outer needle and a puncture inner needle. The puncture outer needle is of a hollow structure, and the puncture inner needle is of a solid structure. The puncture outer needle is sleeved on the puncture inner needle and can move relatively freely. On the surface wall of the puncture outer needle near the tip, on the side corresponding to the tip inclined surface, there are a number of crescent-shaped outer needle grooves protruding towards the tip, and the outer needle grooves are arranged obliquely in a manner not perpendicular to the axis of the puncture outer needle. On the surface wall of the puncture inner needle near the tip, on the side corresponding to the tip inclined surface, there are a number of crescent-shaped inner needle grooves protruding towards the tip, and the inner needle grooves are arranged obliquely in a manner not perpendicular to the axis of the puncture inner needle. When the tip inclined surfaces of the puncture outer needle and the puncture inner needle are flush, the inclination directions of the outer needle grooves and the inner needle grooves are opposite.

[0005] As a further improvement of the present invention, on the surface wall of the puncture outer needle near the tip, on the side facing away from the tip inclined surface, there are also a number of crescent-shaped outer needle grooves protruding towards the tip, and the outer needle grooves on the side corresponding to the tip inclined surface and the outer needle grooves on the side facing away from the tip inclined surface have the same inclination direction but are staggered in the length direction of the puncture outer needle.

[0006] As a further improvement of the present invention, the included angle between the line connecting the two ends of the outer needle groove and the axis of the puncture outer needle is 60 degrees, and the included angle between the line connecting the two ends of the inner needle groove and the axis of the puncture inner needle is 60 degrees.

[0007] As a further improvement of the present invention, the deepest depth of the outer needle groove is 1 / 4 of the wall thickness of the puncture outer needle.

[0008] As a further improvement of the present invention, the length of the puncture outer needle is 100 mm, the outer diameter is 0.8 mm, the inner diameter is 0.6 mm, the wall thickness is 0.2 mm, the depth of the deepest part of the outer needle groove is 0.05 mm, the width of the widest part is 0.2 mm, the height of the two tips of the outer needle groove is 0.35 mm, the outer needle groove starts from 3 mm behind the tip bevel, the overall length is 10 mm, and the distance between adjacent outer needle grooves is 0.3 mm; the length of the puncture inner needle is 150 mm, the outer diameter is 0.5 mm, the depth of the deepest part of the inner needle groove is 0.1 mm, the width of the widest part is 0.5 mm, the height of the two tips of the inner needle groove is 0.25 mm, the inner needle groove starts from 3 mm behind the tip bevel, the overall length is 10 mm, and the distance between adjacent inner needle grooves is 0.3 mm.

[0009] As a further improvement of the present invention, the length of the puncture outer needle is 150 mm, the outer diameter is 1.2 mm, the inner diameter is 0.8 mm, the wall thickness is 0.4 mm, the depth of the deepest part of the outer needle groove is 0.1 mm, the width of the widest part is 1.0 mm, the height of the two tips of the outer needle groove is 0.55 mm, the outer needle groove starts from 3 mm behind the tip bevel, the overall length is 10 mm, and the distance between adjacent outer needle grooves is 0.3 mm; the length of the puncture inner needle is 200 mm, the outer diameter is 0.7 mm, the depth of the deepest part of the inner needle groove is 0.2 mm, the width of the widest part is 0.8 mm, the height of the two tips of the inner needle groove is 0.35 mm, the inner needle groove starts from 3 mm behind the tip bevel, the overall length is 10 mm, and the distance between adjacent inner needle grooves is 0.3 mm.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] 1). The structure of the present invention is ingenious and reasonable. By providing an outer needle groove on the puncture outer needle and an inner needle groove on the puncture inner needle, when the puncture needle device is punctured under ultrasonic guidance, if the display is not good, the inner needle groove can be rotated to dynamically cross-adjust with the outer needle groove, which will greatly increase the reflection cross-section of the entire puncture needle device, making it more conducive to ultrasonic reflection, so that the puncture needle device is shown more clearly under ultrasound.

[0012] 2). The outer needle groove and the inner needle groove in the present invention both protrude towards the tip, which can reduce the puncture resistance and facilitate operation; since the reflection is increased by the interaction between the puncture outer needle and the puncture inner needle, it also overcomes the defect that the existing puncture needle has to open a deep groove in order to increase the reflection surface of the needle surface, resulting in poor needle strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front structural schematic diagram of an embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram of the back structure of an embodiment of the present invention.

[0015] Explanation of reference numerals: 1 - puncture outer needle, 1a - outer needle groove, 2 - puncture inner needle, 2a - inner needle groove. Detailed implementation manners

[0016] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0017] As Figure 1 shown, the embodiment discloses an ultrasonic-guided puncture needle device, including a puncture outer needle 1 and a puncture inner needle 2. The puncture outer needle 1 has a hollow structure, and the puncture inner needle 2 has a solid structure. The puncture outer needle 1 is sleeved on the puncture inner needle 2 and can move relatively freely. On the surface wall of the puncture outer needle 1 near the tip and corresponding to the tip bevel side, there are a plurality of crescent-shaped outer needle grooves 1a protruding towards the tip, and the outer needle grooves 1a are arranged obliquely in a manner not perpendicular to the axis of the puncture outer needle 1. On the surface wall of the puncture inner needle 2 near the tip and corresponding to the tip bevel side, there are a plurality of crescent-shaped inner needle grooves 2a protruding towards the tip, and the inner needle grooves 2a are arranged obliquely in a manner not perpendicular to the axis of the puncture inner needle 2. When the tip bevels of the puncture outer needle 1 and the puncture inner needle 2 are flush, the inclination directions of the outer needle grooves 1a and the inner needle grooves 2a are opposite.

[0018] During clinical use, this puncture needle device is punctured under ultrasonic guidance. When the display under ultrasound is not good, by rotating the puncture inner needle 2, since the inclination directions of the outer needle grooves 1a and the inner needle grooves 2a are opposite, rotating the puncture inner needle 2 can dynamically cross-adjust the inner needle grooves 2a and the outer needle grooves 1a, which will greatly increase the reflection cross-section of the entire puncture needle device, making it more conducive to ultrasonic reflection, so that the puncture needle device is shown more clearly under ultrasound. Since both the outer needle grooves 1a and the inner needle grooves 2a protrude towards the tip, the puncture resistance can be reduced, facilitating operation. Since the reflection is increased by the interaction between the puncture outer needle 1 and the puncture inner needle 2 inside and outside, it also overcomes the defect that the existing puncture needle has to open deep grooves in order to increase the reflection surface of the needle surface, resulting in poor needle strength.

[0019] As Figure 2 shown, in this embodiment, on the surface wall of the puncture outer needle 1 near the tip and on the side opposite to the tip bevel side, there are also a plurality of crescent-shaped outer needle grooves 1a protruding towards the tip, and the outer needle grooves 1a on the corresponding tip bevel side and the outer needle grooves 1a on the side opposite to the tip bevel side have the same inclination direction but are staggered in the length direction of the puncture outer needle 1. With such a setting, since both sides of the surface wall of the puncture outer needle 1 are provided with outer needle grooves 1a, when rotating the puncture inner needle 2 to enhance the display, only a small-angle rotation of the puncture inner needle 2 is required, and there will be a dynamic cross formed by the outer needle grooves 1a and the inner needle grooves 2a, making the operation more convenient.

[0020] As Figure 1 shown, in this embodiment, the included angle between the line connecting the two ends of the outer needle groove 1a and the axis of the puncture outer needle 1 is 60 degrees, and the included angle between the line connecting the two ends of the inner needle groove 2a and the axis of the puncture inner needle 2 is 60 degrees. With such a setting, the dynamic cross-adjustment effect between the inner needle groove 2a and the outer needle groove 1a can be good.

[0021] As Figure 1 shown, in this embodiment, the depth of the deepest part of the outer needle groove 1a is 1 / 4 of the wall thickness of the puncture outer needle 1. With such a setting, the puncture outer needle 1 can be ensured to have sufficient structural strength.

[0022] In the present invention, the outer needle groove 1a on the puncture outer needle 1 and the inner needle groove 2a on the puncture inner needle 2 should be set according to the specifications of the puncture outer needle 1 and the puncture inner needle 2. Two common specifications are given here:

[0023] 1. The puncture outer needle 1 has a length of 100 mm, an outer diameter of 0.8 mm, an inner diameter of 0.6 mm, a wall thickness of 0.2 mm. The depth of the deepest part of the outer needle groove 1a is 0.05 mm, the width of the widest part is 0.2 mm, the height between the two tips of the outer needle groove 1a is 0.35 mm [the height between the two tips of the outer needle groove 1a refers to the straight-line distance between the two tips of the outer needle groove 1a]. The outer needle groove 1a starts from 3 mm behind the tip bevel and has an overall set length of 10 mm. The spacing between adjacent outer needle grooves 1a is 0.3 mm. The puncture inner needle 2 has a length of 150 mm, an outer diameter of 0.5 mm. The depth of the deepest part of the inner needle groove 2a is 0.1 mm, the width of the widest part is 0.5 mm, the height between the two tips of the inner needle groove 2a is 0.25 mm [the height between the two tips of the inner needle groove 2a refers to the straight-line distance between the two tips of the inner needle groove 2a]. The inner needle groove 2a starts from 3 mm behind the tip bevel and has an overall set length of 10 mm. The spacing between adjacent inner needle grooves 2a is 0.3 mm.

[0024] 2. The puncture outer needle 1 has a length of 150 mm, an outer diameter of 1.2 mm, an inner diameter of 0.8 mm, a wall thickness of 0.4 mm. The depth of the deepest part of the outer needle groove 1a is 0.1 mm, the width of the widest part is 1.0 mm, the height between the two tips of the outer needle groove 1a is 0.55 mm. The outer needle groove 1a starts from 3 mm behind the tip bevel and has an overall set length of 10 mm. The spacing between adjacent outer needle grooves 1a is 0.3 mm. The puncture inner needle 2 has a length of 200 mm, an outer diameter of 0.7 mm. The depth of the deepest part of the inner needle groove 2a is 0.2 mm, the width of the widest part is 0.8 mm, the height between the two tips of the inner needle groove 2a is 0.35 mm. The inner needle groove 2a starts from 3 mm behind the tip bevel and has an overall set length of 10 mm. The spacing between adjacent inner needle grooves 2a is 0.3 mm.

[0025] The above-described are only the preferred embodiments of the present invention, and the above specific embodiments do not limit the present invention. Within the scope of the technical idea of the present invention, various deformations and modifications can occur. Any embellishment, modification or equivalent replacement made by those of ordinary skill in the art according to the above description shall fall within the scope protected by the present invention.

Claims

1. An ultrasonic-guided puncture needle device, characterized in that: It includes a puncture outer needle (1) and a puncture inner needle (2). The puncture outer needle (1) is of a hollow structure, and the puncture inner needle (2) is of a solid structure. The puncture outer needle (1) is sleeved on the puncture inner needle (2) and can move relatively freely. On the surface wall of the puncture outer needle (1) near the tip, on the side corresponding to the tip inclined surface, there are several crescent-shaped outer needle grooves (1a) protruding towards the tip, and the outer needle grooves (1a) are arranged obliquely in a manner not perpendicular to the axis of the puncture outer needle (1). On the surface wall of the puncture inner needle (2) near the tip, on the side corresponding to the tip inclined surface, there are several crescent-shaped inner needle grooves (2a) protruding towards the tip, and the inner needle grooves (2a) are arranged obliquely in a manner not perpendicular to the axis of the puncture inner needle (2). When the tip inclined surfaces of the puncture outer needle (1) and the puncture inner needle (2) are flush, the inclination directions of the outer needle grooves (1a) and the inner needle grooves (2a) are opposite. On the surface wall of the puncture outer needle (1) near the tip, on the side opposite to the tip inclined surface, there are also several crescent-shaped outer needle grooves (1a) protruding towards the tip, and the outer needle grooves (1a) on the side corresponding to the tip inclined surface and the outer needle grooves (1a) on the side opposite to the tip inclined surface have the same inclination direction but are staggered in the length direction of the puncture outer needle (1). The included angle between the connecting line of the two ends of the outer needle groove (1a) and the axis of the puncture outer needle (1) is 60 degrees, and the included angle between the connecting line of the two ends of the inner needle groove (2a) and the axis of the puncture inner needle (2) is 60 degrees.

2. The ultrasonic-guided puncture needle device according to claim 1, characterized in that: The deepest depth of the outer needle groove (1a) is 1 / 4 of the wall thickness of the puncture outer needle (1).

3. The ultrasonic-guided puncture needle device according to claim 1, characterized in that: The length of the puncture outer needle (1) is 100 mm, the outer diameter is 0.8 mm, the inner diameter is 0.6 mm, the wall thickness is 0.2 mm, the deepest depth of the outer needle groove (1a) is 0.05 mm, the widest width is 0.2 mm, the height of the two tips of the outer needle groove (1a) is 0.35 mm, the outer needle groove (1a) starts to be provided 3 mm from the rear end of the tip inclined surface, the overall setting length is 10 mm, and the spacing between adjacent outer needle grooves (1a) is 0.3 mm. The length of the puncture inner needle (2) is 150 mm, the outer diameter is 0.5 mm, the deepest depth of the inner needle groove (2a) is 0.1 mm, the widest width is 0.5 mm, the height of the two tips of the inner needle groove (2a) is 0.25 mm, the inner needle groove (2a) starts to be provided 3 mm from the rear end of the tip inclined surface, the overall setting length is 10 mm, and the spacing between adjacent inner needle grooves (2a) is 0.3 mm.

4. The ultrasonic-guided puncture needle device according to claim 1, characterized in that: The length of the puncture outer needle (1) is 150 mm, the outer diameter is 1.2 mm, the inner diameter is 0.8 mm, the wall thickness is 0.4 mm. The depth of the deepest part of the outer needle groove (1a) is 0.1 mm, the width of the widest part is 1.0 mm. The height of the two tips of the outer needle groove (1a) is 0.55 mm. The outer needle groove (1a) starts from 3 mm behind the tip bevel and has an overall set length of 10 mm. The spacing between adjacent outer needle grooves (1a) is 0.3 mm. The length of the puncture inner needle (2) is 200 mm, the outer diameter is 0.7 mm. The depth of the deepest part of the inner needle groove (2a) is 0.2 mm, the width of the widest part is 0.8 mm. The height of the two tips of the inner needle groove (2a) is 0.35 mm. The inner needle groove (2a) starts from 3 mm behind the tip bevel and has an overall set length of 10 mm. The spacing between adjacent inner needle grooves (2a) is 0.3 mm.

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