Puncture needle

Abstract

The utility model relates to the technical field of medical instruments, and discloses a puncture needle which comprises a sleeve, a rotating rod is arranged on the inner side of the upper end of the sleeve, a pushing assembly is arranged in the sleeve, an externally-installed threaded pipe is installed on the lower portion of the outer end of the sleeve in a threaded mode, and an extrusion sleeve is arranged on the outer side of the lower end of the externally-installed threaded pipe. And an expansion assembly is arranged below the extrusion sleeve. According to the utility model, through the arrangement of the rotating ring, when puncture is carried out, the rotating ring is screwed to drive the screw rod to spirally enter the interior of the cylinder body, and the screw rod pushes the embedded tube to move forwards along the clamping angle of the limiting block and the limiting groove, so that the butt-joint tube and the needle head are driven to puncture forwards; due to the fact that the angle formed by the threads on the outer side of the screw rod and the inner spiral groove in the top end of the barrel body and the distance between the threads in the groove are equal, when the threads on the outer side of the screw rod and the inner spiral groove in the top end of the barrel body spirally move, the speed of pushing a needle head for puncturing is kept relatively constant, and compared with a traditional mode that a puncture needle is manually pushed, the speed of the puncture needle can be relatively controlled better.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a puncture needle. Background Technology

[0002] A puncture needle is a medical device used in minimally invasive surgery to sample and inject tissues from various organs, such as the kidneys, liver, lungs, breasts, thyroid glands, prostate, pancreas, testes, uterus, ovaries, and the body surface.

[0003] Currently, existing puncture needles are used by operators who hold the needle by hand to puncture the patient. However, manual operation is inherently uncertain. For example, the speed at which the needle enters cannot be precisely controlled, making it difficult to ensure that the needle enters the puncture site at a uniform speed. In addition, before puncture, the needle tip needs to be aligned with the puncture point for positioning, but manual aiming is subject to certain errors. Therefore, there is a need to provide a puncture needle that can solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a puncture needle that solves the problem that existing puncture needles cannot achieve a uniform insertion speed, and that there is a certain error in positioning the needle by visual inspection alone before puncture.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a puncture needle, comprising a cannula, a rotating rod on the inner side of the upper end of the cannula, a pushing component inside the cannula, an external threaded tube threadedly mounted on the lower part of the outer end of the cannula, a compression sleeve on the outer side of the lower end of the external threaded tube, an expansion component below the compression sleeve, a positioning component threadedly mounted on the lower end of the expansion component, and a needle threadedly mounted on the lower end of the pushing component.

[0008] Optionally, the sleeve includes a cylindrical body, an internal threaded tube, a movable groove, and a limiting groove. The lower end of the cylindrical body is provided with an internal threaded tube, the middle part of the inner side of the cylindrical body and the internal threaded tube is provided with a movable groove, and the front and rear sides of the outer end of the cylindrical body are provided with limiting grooves.

[0009] Optionally, the rotating rod includes a swivel, a screw, a stop block, and a bearing. The lower end of the swivel is provided with a screw, the lower end of the screw is provided with a stop block, and the outer end of the stop block is fitted with a bearing.

[0010] Optionally, the pushing component includes a connecting tube, an inner tube, and a limiting block. The upper end of the connecting tube is provided with an inner tube, and the front and rear sides of the outer end of the inner tube are provided with limiting blocks.

[0011] Optionally, the extension component includes a front tube, a storage slot, a display board, and a soft pad. The storage slot is provided on the inner side of the outer end of the front tube, the display board is provided inside the storage slot, and a soft pad is provided on the upper part of the outer end of the display board.

[0012] Optionally, the positioning component includes a bracket, a battery tube, a connecting tube, a positioning ring, a lamp housing, and an infrared lamp. The upper left and right sides of the bracket are provided with battery tubes, the lower left and right sides of the bracket are provided with connecting tubes, the lower end of the connecting tube is provided with a positioning ring, the lower end of the positioning ring is threaded with a lamp housing, and the upper end of the lamp housing is provided with an infrared lamp.

[0013] Optionally, the lower end of the rotary rod passes through the upper part of the sleeve and extends downward into the interior of the push assembly, and is embedded and mated with the contact end of the push assembly. The lower end of the push assembly and the needle are threaded together, and the lower end of the sleeve and the expansion assembly are threaded together. A control switch is provided on the lower front side of the outer end of the expansion assembly.

[0014] Optionally, a slot is provided above the outer end of the inner tube, and the slots are symmetrically distributed front and back. The outer diameter of the limiting block is adapted to the inner diameter of the slot provided at the outer end of the inner tube, and a spring is provided at the contact end of the limiting block and the slot.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model has a reasonable structure. Through the setting of the rotating ring, when puncturing, the rotating ring is turned to drive the screw to spiral into the inside of the cylinder. It pushes the inner tube forward along the holding angle of the limiting block and the limiting groove, and then drives the connecting tube and the needle forward to puncture. Since the angle and the spacing of the opening of the outer thread of the screw and the inner thread groove at the top of the cylinder are equal, the spiral motion of the two helps to maintain a relatively uniform speed when pushing the needle to puncture. Compared with the traditional manual pushing of the puncture needle, the speed of the puncture needle can be better controlled.

[0017] 2. In this utility model, the four display plates can be opened before the puncture work begins. The opening angle can be achieved by rotating the external threaded tube to push the extrusion sleeve downward, so that the lower end of the extrusion sleeve abuts against the lower end of the display plate. At the same time, since the inner side of the lower end of the extrusion sleeve has an inclined groove, the opening angle of the four display plates can be controlled by the length of the lower end of the display plate entering the inner side of the extrusion sleeve, forming an adjustable conical support structure. Then, the control switch is turned on, and the battery tube provides power to start the ring-shaped infrared lamps. Since the illumination angle of the infrared lamps is all concentrated obliquely downward and inward, the convergence point of the light is the positioning point of the puncture position. With the help of the adjustable conical support structure, the puncture position can be quickly located. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional exploded view of the sleeve, rotating rod, and pushing assembly of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the needle of this utility model;

[0021] Figure 4 This is a three-dimensional exploded view of the external threaded tube and extrusion sleeve of this utility model;

[0022] Figure 5 This is a schematic diagram of the planar structure of the extrusion sleeve and extension component of this utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of the positioning component of this utility model;

[0024] Figure 7 This is a schematic diagram of the three-dimensional exploded structure of the lamp housing and infrared lamp of this utility model.

[0025] In the diagram: 1. Sleeve; 2. Rotary rod; 3. Pushing assembly; 4. External threaded tube; 5. Extrusion sleeve; 6. Extension assembly; 7. Positioning assembly; 8. Needle; 101. Cylinder; 102. Internal threaded tube; 103. Movable groove; 104. Limiting groove; 201. Rotary ring; 202. Screw; 203. Abutment block; 204. Bearing; 301. Connecting tube; 302. Embedded tube; 303. Limiting block; 601. Front tube; 602. Storage groove; 603. Display board; 604. Soft pad; 701. Support; 702. Battery tube; 703. Connecting tube; 704. Positioning ring; 705. Lamp housing; 706. Infrared lamp. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example: Reference Figures 1-7The puncture needle shown includes a cannula 1. A rotating rod 2 is provided on the inner side of the upper end of the cannula 1. The lower end of the rotating rod 2 passes through the upper part of the cannula 1 and extends downward to the interior of the pushing component 3, and is embedded and connected with the contact end of the pushing component 3. The pushing component 3 is provided inside the cannula 1. The lower end of the pushing component 3 is threadedly reinforced with the needle 8. An external threaded tube 4 is threadedly installed on the lower part of the outer end of the cannula 1. A compression sleeve 5 is provided on the outer side of the lower end of the external threaded tube 4. An expansion component 6 is provided below the compression sleeve 5. The lower end of the cannula 1 is threadedly reinforced with the expansion component 6. A control switch is provided on the lower front side of the outer end of the expansion component 6. The control switch is electrically connected to the positioning component 7 below it. The positioning component 7 is threadedly installed on the lower end of the expansion component 6. The needle 8 is threadedly installed on the lower end of the pushing component 3.

[0028] As an optional implementation method in this embodiment, such as Figures 1 to 3 As shown, the sleeve 1 includes a cylindrical body 101, an internal threaded tube 102, a movable groove 103, and a limiting groove 104. The cylindrical body 101 is composed of two semi-cylinders joined together. The lower end of the cylindrical body 101 is provided with the internal threaded tube 102. The middle of the inner side of the cylindrical body 101 and the internal threaded tube 102 is provided with the movable groove 103. Limiting grooves 104 are opened on the front and rear sides of the outer end of the cylindrical body 101. The rotating rod 2 includes a rotating ring 201, a screw 202, a stop block 203, and a bearing 204. The lower end of the rotating ring 201 is provided with the screw 202. The lower end of the screw 202 is provided with the screw 202. A stop block 203 is provided, and a bearing 204 is sleeved on the outer end of the stop block 203; the pushing assembly 3 includes a connecting tube 301, an inner tube 302 and a limiting block 303. The upper end of the connecting tube 301 is provided with an inner tube 302. A slot is opened above the outer end of the inner tube 302, and the slots are symmetrically distributed front and back. Limiting blocks 303 are provided on the front and back sides of the outer end of the inner tube 302. The outer diameter of the limiting block 303 is adapted to the inner diameter of the slot opened at the outer end of the inner tube 302, and a spring is provided at the contact end of the limiting block 303 and the slot.

[0029] Through the sleeve 1, since the cylinder 101 is composed of two semi-cylinders, the cylinder 101 is first separated. After the screw 202, the abutment 203, and the inner tube 302 are assembled, the limiting block 303 at the outer end of the inner tube 302 is aligned with the limiting groove 104 and held together with the two semi-cylinders. Then, the two semi-cylinders are spliced ​​together to form the cylinder 101. After that, the needle 8 is threaded together with the connecting tube 301, and then the cylinder 101 is screwed together with the inner threaded tube 102, so that the connecting tube 301 is inserted into the movable groove 103 opened inside both. During puncture, by turning the rotating ring 201, the screw 202 is driven to spiral into the inside of the cylinder 101, pushing the inner tube 302 forward along the holding angle of the limiting block 303 and the limiting groove 104, which in turn drives the connecting tube 301 and the needle 8 forward to puncture. Since the angle and the spacing of the opening of the outer thread of the screw 202 and the inner thread groove at the top of the cylinder 101 are equal, the spiral motion of the two helps to maintain a relatively uniform speed when pushing the needle 8 to puncture. Compared with the traditional manual pushing of the puncture needle, the speed of the puncture needle can be better controlled.

[0030] like Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment, the extension component 6 includes a front tube 601, a storage slot 602, a display plate 603, and a soft pad 604. The storage slot 602 is provided on the inner side of the outer end of the front tube 601. The display plate 603 is provided inside the storage slot 602. The soft pad 604 is provided on the upper part of the outer end of the display plate 603. There are four storage slots 602, display plates 603, and soft pads 604 symmetrically distributed.

[0031] Before starting the puncture work, the four display plates 603 can be opened using the set display plates 603. The opening angle can be adjusted by rotating the outer threaded tube 4 to push the extrusion sleeve 5 downward, so that the lower end of the extrusion sleeve 5 abuts against the lower end of the display plate 603. At the same time, since the inner side of the lower end of the extrusion sleeve 5 is provided with an inclined slot, the opening angle of the four display plates 603 can be controlled by the length of the lower end of the display plate 603 entering the inner side of the extrusion sleeve 5, forming a cone-shaped support structure for subsequent positioning of the puncture position.

[0032] like Figure 6 and Figure 7As shown, in this embodiment, the positioning component 7 includes a support 701, a battery tube 702, a connecting tube 703, a positioning ring 704, a lamp housing 705, and an infrared lamp 706. The battery tube 702 is provided on the left and right sides of the upper end of the support 701. A button battery pack is installed inside the battery tube 702, which can supply power to the infrared lamp 706 and the control switch installed below the outer end of the front tube 601. The connecting tube 703 is provided on the left and right sides of the lower end of the support 701. The lower end of the connecting tube 703 is provided with a positioning ring 704. The lower end of the positioning ring 704 is threaded with a lamp housing 705. The upper end of the lamp housing 705 is provided with an infrared lamp 706. The infrared lamp 706 is distributed in a ring on the inner side of the upper end of the lamp housing 705. At the same time, the lower end of the infrared lamp 706 penetrates through the bottom of the lamp housing 705 and extends downward.

[0033] The support 701 can be threadedly connected to the pre-positioned tube 601. Then, with the conical support structure formed by the extension component 6, the puncture needle is placed in the area to be punctured. The control switch is turned on, and the battery tube 702 provides power, causing the ring-shaped infrared lamps 706 to start working. Since the illumination angle of the infrared lamps 706 is all concentrated obliquely downward and inward, the convergence point of the light is the positioning point of the puncture position, realizing the rapid positioning of the puncture position.

[0034] The working principle of this utility model is as follows: Before the puncture needle begins operation, the four display plates 603 can be opened. The opening angle can be adjusted by rotating the external threaded tube 4 to push the compression sleeve 5 downwards, so that the lower end of the compression sleeve 5 abuts against the lower end of the display plate 603. At the same time, since the inner side of the lower end of the compression sleeve 5 has an inclined groove, the length of the lower end of the display plate 603 entering the inner side of the compression sleeve 5 controls the opening angle of the four display plates 603, forming an adjustable conical support structure. After that, the control switch is turned on, and the battery tube 702 provides power, so that the ring-shaped infrared lamps 706 start working. Since the irradiation angle of the infrared lamps 706 is all inclined downwards and inwards... In this process, the convergence point of the light is the positioning point of the puncture position. With the help of the adjustable conical support structure, the puncture position can be quickly positioned. Secondly, when puncturing, by turning the rotating ring 201, the screw 202 is driven to spiral into the inside of the cylinder 101. It pushes the inner tube 302 forward along the holding angle of the limiting block 303 and the limiting groove 104, which in turn drives the connecting tube 301 and the needle 8 to puncture forward. Since the angle and the spacing of the outer thread of the screw 202 and the inner thread groove at the top of the cylinder 101 are equal, the spiral motion of the two helps to maintain a relatively uniform speed when pushing the needle 8 to puncture. Compared with the traditional manual pushing of the puncture needle, the speed of the puncture needle can be better controlled.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A puncture needle, comprising a cannula (1), characterized in that: The upper end of the sleeve (1) is provided with a rotating rod (2), the inside of the sleeve (1) is provided with a pushing component (3), the lower end of the sleeve (1) is provided with a threaded external threaded tube (4), the lower end of the external threaded tube (4) is provided with a compression sleeve (5), the lower end of the compression sleeve (5) is provided with an expansion component (6), the lower end of the expansion component (6) is threaded with a positioning component (7), and the lower end of the pushing component (3) is threaded with a needle (8).

2. The puncture needle according to claim 1, characterized in that: The sleeve (1) includes a cylindrical body (101), an internal threaded tube (102), a movable groove (103), and a limiting groove (104). The lower end of the cylindrical body (101) is provided with an internal threaded tube (102). The middle part of the inner side of the cylindrical body (101) and the internal threaded tube (102) is provided with a movable groove (103). Limiting grooves (104) are opened on the front and rear sides of the outer end of the cylindrical body (101).

3. The puncture needle according to claim 1, characterized in that: The rotating rod (2) includes a rotating ring (201), a screw (202), a stop block (203), and a bearing (204). The lower end of the rotating ring (201) is provided with a screw (202), the lower end of the screw (202) is provided with a stop block (203), and the outer end of the stop block (203) is fitted with a bearing (204).

4. The puncture needle according to claim 1, characterized in that: The pushing component (3) includes a connecting tube (301), an inner tube (302), and a limiting block (303). The upper end of the connecting tube (301) is provided with an inner tube (302), and the front and rear sides of the outer end of the inner tube (302) are provided with limiting blocks (303).

5. A puncture needle according to claim 1, characterized in that: The extension component (6) includes a front tube (601), a storage slot (602), a display board (603), and a soft pad (604). The storage slot (602) is provided on the inner side of the outer end of the front tube (601). The display board (603) is provided inside the storage slot (602). The soft pad (604) is provided on the upper part of the outer end of the display board (603).

6. A puncture needle according to claim 1, characterized in that: The positioning component (7) includes a support (701), a battery tube (702), a connecting tube (703), a positioning ring (704), a lamp housing (705), and an infrared lamp (706). The battery tube (702) is provided on the left and right sides of the upper end of the support (701), and the connecting tube (703) is provided on the left and right sides of the lower end of the support (701). The lower end of the connecting tube (703) is provided with a positioning ring (704), and the lower end of the positioning ring (704) is threaded with a lamp housing (705). The upper end of the lamp housing (705) is provided with an infrared lamp (706).

7. A puncture needle according to claim 1, characterized in that: The lower end of the swivel (2) passes through the top of the sleeve (1) and extends downward into the interior of the push assembly (3), and is embedded and connected with the contact end of the push assembly (3). The lower end of the push assembly (3) and the needle (8) are threaded together. The lower end of the sleeve (1) and the expansion assembly (6) are threaded together. A control switch is provided on the lower front side of the outer end of the expansion assembly (6).

8. A puncture needle according to claim 4, characterized in that: A slot is provided above the outer end of the inner tube (302), and the slots are symmetrically distributed front and back. The outer diameter of the limiting block (303) is compatible with the inner diameter of the slot at the outer end of the inner tube (302), and a spring is provided at the contact end of the limiting block (303) and the slot.

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