Visual puncture needle

Abstract

The visible puncture needle is provided with a connecting part, a puncture needle body penetrates through the interior of the connecting part, the outer side of the connecting part is sleeved with a holding ring, and a fixing strip is fixed to the inner wall of the holding ring; comprising a limiting assembly arranged between the holding ring and the connecting part, and the limiting assembly is used for adjusting and limiting the connecting part; the filter screen is fixed in an inner cavity in the end, away from the connecting part, of the puncture needle body, a connecting plate is movably arranged at the end, away from the connecting part, of the puncture needle body, a visual lens is installed on the surface of the connecting plate, and an adjusting mechanism is arranged at the edge of the connecting plate. According to the visible puncture needle, when the puncture needle is held by a hand and needs to be rotated, the puncture needle can be directly rotated, and the position of the hand cannot be changed, so that shaking of the puncture needle can be reduced, and when liquid injection or liquid extraction is needed, a channel can be opened, and blockage of the channel caused by other substances during puncture operation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of puncture needles, in particular to a visual puncture needle. Background Technique

[0002] A puncture needle is an interventional radiology medical device, mainly used for puncturing human parts to collect human samples, inject drugs and gases, etc., or as a channel for other instruments to enter the body. In order to improve the accuracy of puncture, currently, the puncture needle adopts a visual structure to facilitate the viewing of the puncture position. For example, a visual puncture needle with the publication number of CN208551966U includes an inner tube and an outer tube. The outer tube can be sleeved outside the inner tube. The non-insertion end of the inner tube is provided with a first connection part, and the non-insertion end of the outer tube is provided with a needle tube seat, and a second connection part is provided on the needle tube seat. The first connection part and the second connection part can be cooperatively connected; the inner tube is a hollow tubular structure, a cavity is provided in the middle of the inner tube, and an endoscope can be inserted into the cavity; the insertion end of the inner tube has a tip for puncture, which can realize visual puncture operation, prevent over-insertion or under-insertion during puncture, and thus avoid harm to patients. However, the visual puncture needle still has the following disadvantages during actual use:

[0003] During the puncture process of the traditional puncture needle, the position needs to be adjusted, or different positions need to be viewed. Therefore, the puncture needle needs to be rotated. However, it is inconvenient to rotate the puncture needle when holding it by hand, and the holding position needs to be adjusted, which will cause large fluctuations of the puncture needle and affect the puncture. In view of the above problems, there is an urgent need to innovate and design on the basis of the original puncture needle. Content of the Utility Model

[0004] The purpose of the utility model is to provide a visual puncture needle to solve the problem proposed in the above background technique that during the puncture process of the traditional puncture needle, the position needs to be adjusted, or different positions need to be viewed. Therefore, the puncture needle needs to be rotated. However, it is inconvenient to rotate the puncture needle when holding it by hand, and the holding position needs to be adjusted, which will cause large fluctuations of the puncture needle and affect the puncture.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A visual puncture needle is provided with a connection part. A puncture needle body penetrates through the inside of the connection part, and a grip ring is sleeved outside the connection part, and fixing strips are fixed on the inner wall of the grip ring;

[0006] Including: a limit component, which is arranged between the grip ring and the connection part, and the limit component is used for the adjustment and limitation of the connection part;

[0007] A filter screen is fixed in the inner cavity at one end of the puncture needle body far away from the connection part. A connecting plate is movably arranged at one end of the puncture needle body far away from the connection part, and a visual lens is installed on the surface of the connecting plate, and an adjusting mechanism is arranged at the edge of the connecting plate.

[0008] Preferably, the fixing bars are evenly distributed at equal angles on the inner wall of the holding ring, and the puncture needle body and the holding ring form a relative rotation structure. When holding the holding ring by hand, the puncture needle body can be directly rotated to adjust the angle.

[0009] Preferably, the limiting component includes an adjusting rod arranged in the connecting part, and the cross-section of the adjusting rod is a "U" - shaped structure, and the adjusting rod is slidably connected with the connecting part. When pressing the adjusting rod, it can drive the adjusting rod to slide in the connecting part and drive the limiting block to move synchronously.

[0010] Preferably, both ends of the adjusting rod are elastically connected to the connecting part through springs, and a limiting block is fixed at one end of the adjusting rod close to the holding ring. The cross-sections of both the limiting block and the fixing bar are serrated. When the limiting block moves, it can be separated from the fixing bar, and then the puncture needle body can be rotated. When the fixing bar engages with the limiting block, the puncture needle body remains stable.

[0011] Preferably, the connecting plate and the puncture needle body are rotatably connected, and a spring is arranged between the connecting plate and the filter screen. By rotating on the puncture needle body, the connecting plate can be used to protect the internal channel of the puncture needle body.

[0012] Preferably, the adjusting mechanism includes a traction rope fixed at the edge of the connecting plate, and the end of the traction rope far away from the connecting plate penetrates through the inner wall of the puncture needle body and extends to the outside. When pulling the traction rope, the connecting plate can be driven to rotate, and when not pulling, the connecting plate can be driven to fit with the puncture needle body by the resilience of the spring.

[0013] Preferably, the traction rope is slidably connected with the puncture needle body, and a pull ring is fixed at the end of the traction rope far away from the connecting plate. When pulling the pull ring, the traction rope can be driven to slide on the puncture needle body.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: for this visible puncture needle, when it is necessary to rotate the puncture needle by hand, the puncture needle can be directly rotated without changing the position of the hand. This can reduce the shaking of the puncture needle, and when it is necessary to inject or extract liquid, the channel can be opened to avoid blockage of the channel caused by other substances during the puncture operation. The specific content is as follows:

[0015] 1. By pressing the adjusting rod to drive it to slide in the connecting part and drive the limiting block to move synchronously, the fixing bar releases the limit on the limiting block, and then the puncture needle body can be rotated. After the adjustment is completed, release the pressing on the adjusting rod, and the adjusting rod and the limiting block are driven to return to their original positions by the resilience of the spring. In this way, the fixing bar can re - engage with the limiting block to ensure the stability of the puncture needle body after rotation;

[0016] 2. When it is necessary to inject or extract liquid, pull the traction rope through the pull ring, which can pull the connecting plate to rotate and remove the obstruction to the end of the puncture needle body. When extracting liquid, other solid substances in the body can be intercepted by the filter to avoid entering the channel and causing blockage. After the operation is completed, release the pull ring, so that the spring resilience can drive the connecting plate to rotate in the opposite direction and fit the end of the puncture needle body again. Brief Description of the Figures

[0017] Figure 1 This is a front view structural diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the front section structure of the grip ring of the utility model;

[0019] Figure 3 is a schematic diagram of the side view of the grip ring of the utility model;

[0020] Figure 4 It is a partial side view of the structure of the puncture needle body of the utility model;

[0021] Figure 5 It is a schematic diagram of the partial front section structure of the puncture needle body of the utility model;

[0022] Figure 6 This is a schematic diagram of the partial cross-sectional structure of the connection part of the utility model.

[0023] In the figure: 1, connecting part; 2, puncture needle body; 3, grip ring; 4, fixing bar; 5, adjustment rod; 6, limit block; 7, filter screen; 8, connecting plate; 9, visual lens; 10, traction rope; 11, pull ring. Specific implementation method

[0024] The following will combine the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Please refer to Figures 1 - 6 , the utility model provides the following technical solutions:

[0026] Embodiment 1: To solve the problems existing in the prior art, this embodiment adopts the following technical solution. A visible puncture needle is provided with a connecting part 1. A puncture needle body 2 penetrates through the inside of the connecting part 1. A holding ring 3 is sleeved outside the connecting part 1. And a fixing strip 4 is fixed on the inner wall of the holding ring 3. It includes: a limiting component arranged between the holding ring 3 and the connecting part 1, and the limiting component is used for adjusting and limiting the connecting part 1; a filter screen 7 fixed in the inner cavity at one end of the puncture needle body 2 away from the connecting part 1. A connecting plate 8 is movably arranged at one end of the puncture needle body 2 away from the connecting part 1. And a visible lens 9 is installed on the surface of the connecting plate 8. An adjusting mechanism is arranged at the edge of the connecting plate 8.

[0027] During the puncture process of the existing puncture needle, it is necessary to adjust the position or view different positions. Therefore, the puncture needle needs to be rotated. However, when holding the puncture needle by hand, it is not convenient to rotate it, and the holding position needs to be adjusted, which will cause the puncture needle to shake greatly and affect the puncture. As Figures 1 - 3 shown, the fixing strips 4 are evenly distributed at equal angles on the inner wall of the holding ring 3, and the puncture needle body 2 and the holding ring 3 form a relatively rotatable structure; the fixing strips 4 are evenly distributed at equal angles on the inner wall of the holding ring 3, and the puncture needle body 2 and the holding ring 3 form a relatively rotatable structure; both ends of the adjusting rod 5 are elastically connected to the connecting part 1 through springs. And a limiting block 6 is fixed at one end of the adjusting rod 5 close to the holding ring 3. And the cross sections of the limiting block 6 and the fixing strip 4 are both serrated; holding the holding ring 3 by hand can realize the operation of the puncture needle body 2. When it is necessary to rotate the puncture needle body 2, the holding position does not need to be adjusted. By pressing the adjusting rod 5, it drives the adjusting rod 5 to slide in the connecting part 1 and drives the limiting block 6 to move synchronously. In this way, the fixing strip 4 releases the limitation on the limiting block 6, and the puncture needle body 2 can be rotated. After the adjustment is completed, release the pressing on the adjusting rod 5, and the elastic return of the spring drives the adjusting rod 5 and the limiting block 6 to return to their original positions. In this way, the fixing strip 4 can re-engage with the limiting block 6 to ensure the stability of the puncture needle body 2 after rotation.

[0028] Embodiment 2: After the existing puncture needle is punctured, the internal channel of the puncture needle is easily affected or blocked by other solid tissues in the human body, which affects subsequent liquid injection and liquid extraction, and lacks a protection structure. Therefore, this embodiment adopts the following technical solution, as Figures 4 - 6As shown, the connecting plate 8 and the puncture needle body 2 are rotatably connected, and a spring is arranged between the connecting plate 8 and the filter screen 7; the adjustment mechanism includes a traction rope 10 fixed at the edge of the connecting plate 8, and the end of the traction rope 10 away from the connecting plate 8 passes through the inner wall of the puncture needle body 2 and extends to the outside; the traction rope 10 and the puncture needle body 2 are slidably connected, and a pull ring 11 is fixed to the end of the traction rope 10 away from the connecting plate 8; after the puncture needle body 2 is inserted into the human body, the internal channel of the puncture needle body 2 can be protected by the connecting plate 8 without affecting the The puncture position is checked through the lens 9. When it is necessary to inject or draw liquid, the traction rope 10 is pulled through the pull ring 11, which can pull the connecting plate 8 to rotate, remove the cover on the end of the puncture needle body 2, and facilitate injection and drawing liquid. When drawing liquid, other solid substances in the body can be intercepted by the filter 7 to avoid entering the channel and causing blockage. After the operation is completed, the pull on the pull ring 11 is released, so that the spring resilience can drive the connecting plate 8 to rotate in the opposite direction to fit the end of the puncture needle body 2 again for protection.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A visual puncture needle, comprising a connecting portion (1), wherein a puncture needle body (2) penetrates the interior of the connecting portion (1), a grip ring (3) is sleeved on the outer side of the connecting portion (1), and a fixing strip (4) is fixed to the inner wall of the grip ring (3); It is characterized in that include: a limiting assembly, arranged between the grip ring (3) and the connecting portion (1), the limiting assembly being used for adjusting and limiting the connecting portion (1); A filter screen (7) is fixed in an internal cavity of an end of the puncture needle body (2) away from the connecting portion (1); a connecting plate (8) is movably provided at the end of the puncture needle body (2) away from the connecting portion (1); a visual lens (9) is mounted on the surface of the connecting plate (8); and an adjustment mechanism is provided at the edge of the connecting plate (8); The limiting assembly comprises an adjusting rod (5) arranged in the connecting portion (1), the cross section of the adjusting rod (5) being a "U"-shaped structure, and the adjusting rod (5) and the connecting portion (1) being slidably connected; Both ends of the adjusting rod (5) are elastically connected to the connecting portion (1) via springs, and a limiting block (6) is fixed to one end of the adjusting rod (5) close to the grip ring (3), and the cross-sections of the limiting block (6) and the fixing strip (4) are both serrated.

2. A visual puncture needle according to claim 1, characterized in that: The fixing strips (4) are distributed at equal angles on the inner wall of the grip ring (3), and the puncture needle body (2) and the grip ring (3) form a relatively rotating structure.

3. A visual puncture needle according to claim 1, characterized in that: The connecting plate (8) and the puncture needle body (2) are rotatably connected, and a spring is provided between the connecting plate (8) and the filter screen (7).

4. A visual puncture needle according to claim 1, characterized in that: The adjustment mechanism comprises a traction rope (10) fixed at the edge of the connecting plate (8), and one end of the traction rope (10) away from the connecting plate (8) penetrates the inner wall of the puncture needle body (2) and extends to the outside.

5. A visual puncture needle according to claim 4, characterized in that: The traction rope (10) and the puncture needle body (2) are slidably connected, and a pull ring (11) is fixed to one end of the traction rope (10) away from the connecting plate (8).

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