Needle guider in ultrasonic cavity

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to a needle guider in an ultrasonic cavity. The device comprises a connecting block, the right side wall of the connecting block is provided with a clamping assembly used for being fixed to an ultrasonic probe, the left side wall of the connecting block is fixedly provided with an installation groove with a leftward groove opening and without upper and lower groove walls, the installation groove is internally provided with an installation block with the lower end hinged to the installation groove, the top of the installation block is provided with an insertion groove, and a vertically-arranged guide pipe is inserted into the insertion groove; a round hole for a puncture needle to penetrate out is formed in the bottom of the installation block, an arc-shaped guide block which is used for limiting the installation block to swing leftwards by only 60 degrees from the vertical state is fixed to the top of the installation groove, and a position fixing assembly used for fixing the position of the installation block after swinging is installed on the installation block. By means of the arc-shaped guide block and the rotating block, medical staff can conveniently conduct puncture at any inclination angle ranging from 0 degree to 60 degrees according to actual needs of a patient.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, and in particular relates to an ultrasonic intracavitary needle introducer. Background Art

[0002] Interventional ultrasound refers to the use of a puncture needle instead of a scalpel to complete various puncture biopsy, catheterization, aspiration, drug injection, ablation treatment and other operations under the guidance or monitoring of real-time ultrasound. It allows patients to avoid the pain of traditional surgical operations and achieve results comparable to those of surgical operations. It has become one of the supporting technologies in the field of minimally invasive surgery. Its advantage is that puncture under the real-time guidance of ultrasound equipment can avoid damage to important adjacent structures and directly reach the lesion for diagnostic or therapeutic operations. It has the advantages of precision, minimally invasive, safe, less painful, and good efficacy, which is in line with the diagnosis and treatment concepts of contemporary medicine.

[0003] In order to further meet the needs of clinical diagnosis and treatment, by installing a needle guide on the ultrasound probe, the puncture needle can be guided to the target position of the human body under ultrasound guidance to achieve cytological biopsy, histological biopsy, cyst aspiration and treatment, etc. Among them, the needle guide, also known as the ultrasound probe puncture frame, or the puncture guide frame, mainly includes two types: a reusable puncture frame made of metal or plastic, and a disposable puncture frame. However, in actual applications, whether it is a reusable puncture frame or a disposable puncture frame, their adjustment angles are relatively limited, usually between 5°-20°, and the adjustable angle is also a fixed value, which cannot be freely adjusted according to actual needs. For example, for radial artery puncture under ultrasound, the inclination angle of the puncture needle (relative to the vertical plane) is usually greater than 45°, and conventional puncture frames cannot meet this need, so medical personnel can usually only perform punctures at certain risks. Utility Model Content

[0004] The purpose of the utility model is to provide an ultrasonic intracavitary needle introducer with a larger adjustment range.

[0005] The ultrasonic intracavitary needle guide comprises a connecting block, the right side wall of which is installed with a clamping assembly for fixing to the ultrasonic probe, the left side wall of the connecting block is fixed with a mounting groove with a notch facing left and without upper and lower groove walls, a mounting block is arranged in the mounting groove with the lower end hinged thereto, a slot is provided at the top of the mounting block, a vertically arranged guide tube is inserted in the slot, a circular hole is provided at the bottom of the mounting block for the puncture needle to pass through, an arc-shaped guide block is fixed at the top of the mounting groove for limiting the mounting block to swing only 60° to the left from a vertical state, and a retaining assembly is installed on the mounting block for fixing its position after swinging.

[0006] Furthermore, the clamping assembly includes two clamping plates, one ends of which are hinged to the front and rear sides of the right side wall of the connecting block respectively, and the other ends of the two clamping plates are fixed with fixed blocks, and the two fixed blocks are jointly penetrated by a fastening bolt, which is rotationally matched with one of the fixed blocks and is fixed with a limit block for preventing the fastening bolt from detaching from the fixed block, and the fastening bolt is threadedly matched with the other fixed block.

[0007] Furthermore, the fastening bolt is a clevis bolt.

[0008] Furthermore, the arc-shaped guide block has a "U"-shaped structure, and the front and rear side walls are provided with arc-shaped guide grooves that communicate with each other inside and outside. Sliding rods are fixed to the front and rear side walls on the top of the mounting block. The sliding rods pass through the corresponding arc-shaped guide grooves and slide with them. When the sliding rod is located at the right end of the arc-shaped guide groove, the guide tube is in a vertical state. When the sliding rod is located at the left end of the arc-shaped guide groove, the guide tube forms an angle of 60° with the vertical plane.

[0009] Furthermore, the retaining assembly includes a limiting ring fixedly mounted on one end of one of the sliding rods passing through the arc guide groove, and a rotating block threadedly matched with the rotating block is mounted on one end of the other sliding rod passing through the sliding rod.

[0010] Furthermore, a toggle block is fixed on the top of the guide tube, and the toggle block is located on the top of the mounting block.

[0011] Furthermore, a scale line for displaying an angle is disposed on the top of the arc-shaped guide block, and an arrow for indicating a corresponding swing angle of the guide tube is disposed on the top of the toggle block.

[0012] Furthermore, a non-slip pad is fixed on the side of the clamping plate that contacts the ultrasonic probe.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model achieves the effect of quickly installing the device on the ultrasonic probe by clamping the ultrasonic probe between two clamping plates, then rotating the fastening bolts to bring the two clamping plates closer to each other, and then clamping the ultrasonic probe. Moreover, by inserting the guide tube into the slot of the mounting block, the puncture needle can be guided and supported to prevent the puncture needle from bending and other situations that affect the operation. At the same time, inserting guide tubes of different models can also facilitate medical personnel to use puncture needles of different specifications or use guide needles to assist in puncturing the skin or abdominal wall. The arc-shaped guide block can also expand the adjustment range of the guide tube from the conventional 5°-20° to 0°-60°, and the position of the mounting block can be fixed under the action of the rotating block, so that medical personnel can perform puncture at any inclination angle between 0°-60° according to the actual needs of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0017] Figure 3 for Figure 1 A top view of

[0018] The names of the components in the figure are: 1. Fastening bolt; 2. Fixing block; 3. Clamp; 4. Connecting block; 5. Mounting groove; 6. Sliding rod; 7. Limiting ring; 8. Arc guide block; 9. Mounting block; 10. Toggle block; 11. Rotating block; 12. Guide tube; 13. Scale line; 14. Anti-slip pad. DETAILED DESCRIPTION

[0019] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0020] Example 1

[0021] The ultrasonic intracavitary needle guide described in the present embodiment comprises a connecting block 4, wherein two clamping plates 3 are installed on the right side wall of the connecting block 4, one end of the two clamping plates 3 is respectively hinged on the front side and the rear side of the right side wall of the connecting block 4, and the other ends of the two clamping plates 3 are fixed with a fixing block 2, and a fastening bolt 1 is commonly installed on the two fixing blocks 2, and the fastening bolt 1 is rotationally matched with one of the fixing blocks 2 and is fixed with a limiting block for preventing the fastening bolt 1 from being separated from the fixing block 2, and the fastening bolt 1 is threadedly matched with the other fixing block 2 (the clamping plates 3, fixing blocks 2, connecting blocks 4 and limiting blocks in this paragraph constitute the clamping assembly for fixing with the ultrasonic probe as a whole, and in actual application, the fixing block 2 can be omitted and the connecting block 4 can be directly installed on the other end of the two clamping plates 3). In the present embodiment, the ultrasonic probe is clamped between the two clamping plates 3, and then the fastening bolt 1 is rotated to bring the two clamping plates 3 closer to each other, thereby clamping the ultrasonic probe, so as to achieve the effect of quickly installing the device on the ultrasonic probe; as Figure 1 and Figure 3 As shown, the fastening bolt 1 is a clevis bolt, which makes it more convenient and labor-saving for medical personnel to use it, wherein a circular hole for the fastening bolt 1 to pass through independently is opened on the fixing block 2 that is not threadedly matched with the fastening bolt 1 (the diameter of the circular hole is larger than the diameter of the screw rod of the fastening bolt 1), and the limiting block is fixed on one end of the screw rod of the fastening bolt 1 passing through the fixing block 2;

[0022] like Figure 1 and Figure 3As shown, the connecting block 4 and the clamping plate 3 are both arc-shaped structures, so that the contact surface with the ultrasonic probe is larger, and the fixation is more stable, wherein the clamping plate 3 and the connecting block 4 are both hinged by a pivot;

[0023] The left side wall of the connecting block 4 is fixed with a mounting groove 5 with a notch facing left and without upper and lower groove walls. A mounting block 9 is arranged in the mounting groove 5, and a slot is provided at the top of the mounting block 9. A vertically arranged guide tube 12 is inserted in the slot. A round hole for the puncture needle to pass through is provided at the bottom of the mounting block 9. In this embodiment, the guide tube 12 is inserted into the slot of the mounting block 9 to guide and support the puncture needle, thereby preventing the puncture needle from bending and other situations that affect the operation. At the same time, different types of guide tubes 12 (guide tubes 12 with different diameters) are inserted, which is convenient for medical personnel to use puncture needles of different specifications or use guide needles to assist in puncturing the skin or abdominal wall; Figure 2 As shown, the circular hole is connected to the guide tube 12 and has a diameter greater than or equal to the inner diameter of the guide tube 12 (the guide tube 12 is the largest guide tube 12), thereby ensuring that the puncture needle can pass through the circular hole normally to avoid the situation where the puncture needle tip is stuck in the inside of the mounting block 9;

[0024] The top of the mounting groove 5 is fixed with an arc-shaped guide block 8 for limiting the mounting block 9 to swing only 60° to the left from the vertical state. The arc-shaped guide block 8 expands the adjustment range of the guide tube 12 from the conventional 5°-20° to 0°-60°, so that it is convenient for medical personnel to perform puncture at an inclination angle of 0°-60° according to the actual needs of the patient, such as 50°, 60°, etc., which can be used for radial artery puncture under ultrasound and various types of superficial punctures; Figure 1 and Figure 3 As shown, the arc guide block 8 is in a "U"-shaped structure, and the front and rear side walls are both provided with arc guide grooves that communicate with each other inside and outside. The front and rear side walls at the top of the mounting block 9 are both fixed with sliding rods 6, which pass through the corresponding arc guide grooves and are in sliding cooperation with them. When the sliding rod 6 is located at the right end of the arc guide groove, the guide tube 12 is in a vertical state, and when the sliding rod 6 is located at the left end of the arc guide groove, the guide tube 12 forms an angle of 60° with the vertical plane.

[0025] like Figure 2 and Figure 3 As shown, a toggle block 10 is fixed on the top of the guide tube 12, and the toggle block 10 is located on the top of the mounting block 9, so that it is more labor-saving to swing the mounting block 9 through the toggle block 10;

[0026] like Figure 3As shown, the top of the arc-shaped guide block 8 is provided with a scale line 13 for displaying the angle, and the top of the toggle block 10 is provided with an arrow for indicating the corresponding swing angle of the guide tube 12. The scale line 13 and the arrow make it easier for medical personnel to grasp the swing angle, so that they can adjust to the appropriate angle more quickly.

[0027] A limiting ring 7 is fixedly mounted on one end of one of the sliding rods 6 on the mounting block 9 that passes through the arc-shaped guide groove, and a rotating block 11 threadedly matched with the sliding rod 6 is mounted on one end of the other sliding rod 6 that passes through the sliding rod 6 (the limiting ring 7 and the rotating block 11 in this embodiment as a whole constitute the retaining component for fixing its own position after swinging. In actual applications, the width of the mounting block 9 can also be made the same as the distance between the front and rear inner walls of the arc-shaped guide block 8, so that the limiting effect can be achieved without the use of a limiting ring 7). In this embodiment, the rotating block 11 is rotated to make itself pressed against the side wall of the arc-shaped guide block 8, thereby fixing the position of the mounting block 9, so that the guide tube 12 can be adjusted to any position of 0°-60°.

[0028] When using this embodiment, first rotate the fastening bolt 1 to move the two fixing blocks 2 away from each other and place the ultrasonic probe between the two clamps 3, then rotate the fastening bolt 1 in the opposite direction until the two clamps 3 clamp the ultrasonic probe, then select a guide tube 12 of appropriate specifications and insert it into the slot of the mounting block 9, then loosen the rotating block 11 and move the toggle block 10 to rotate the mounting block 9 to a suitable angle and then tighten the rotating block 11, and finally insert the puncture needle to perform sampling and other operations.

[0029] Example 2

[0030] This embodiment further illustrates the technology. A non-slip pad 14 is fixed to the side of the clamp 3 that is in contact with the ultrasonic probe. The non-slip pad 14 increases the friction between the clamp 3 and the ultrasonic probe, thereby further enhancing the stability of the device when fixed to the ultrasonic probe. Figure 3 As shown, the opposite surfaces of the two clamping plates 3 are the surfaces that are in contact with the ultrasonic probes.

Claims

1. An ultrasonic intracavitary needle introducer, comprising a connecting block (4), characterized in that: The right side wall of the connecting block (4) is provided with a clamping assembly for fixing the ultrasonic probe, the left side wall of the connecting block (4) is provided with a mounting groove (5) with a notch facing left and without upper and lower groove walls, a mounting block (9) is provided in the mounting groove (5) and its lower end is hingedly connected thereto, a slot is provided at the top of the mounting block (9), a vertically arranged guide tube (12) is inserted into the slot, a circular hole is provided at the bottom of the mounting block (9) for the puncture needle to pass through, an arc-shaped guide block (8) is fixed at the top of the mounting groove (5) for limiting the mounting block (9) to be able to swing only 60 degrees to the left from a vertical state, and a retaining assembly is installed on the mounting block (9) for fixing its own position after swinging.

2. The ultrasonic intracavitary needle introducer according to claim 1, characterized in that: The clamping assembly comprises two clamping plates (3), one end of the two clamping plates (3) is hinged to the front side and the rear side of the right side wall of the connecting block (4), respectively; the other ends of the two clamping plates (3) are fixed with a fixing block (2); the two fixing blocks (2) are jointly provided with a fastening bolt (1); the fastening bolt (1) is rotationally matched with one of the fixing blocks (2) and is fixed with a limiting block for preventing the fastening bolt (1) from being separated from the fixing block (2); the fastening bolt (1) is threadedly matched with the other fixing block (2).

3. The ultrasonic intracavitary needle introducer according to claim 2, characterized in that: The fastening bolt (1) is a clevis bolt.

4. The ultrasonic intracavitary needle introducer according to claim 1, characterized in that: The arc-shaped guide block (8) is in a "U"-shaped structure, and the front and rear side walls are both provided with arc-shaped guide grooves that communicate with each other inside and outside. The front and rear side walls at the top of the mounting block (9) are both fixed with sliding rods (6), and the sliding rods (6) pass through the corresponding arc-shaped guide grooves and are in sliding cooperation with the arc-shaped guide grooves. When the sliding rods (6) are located at the right end of the arc-shaped guide grooves, the guide tubes (12) are in a vertical state. When the sliding rods (6) are located at the left end of the arc-shaped guide grooves, the guide tubes (12) form an angle of 60° with the vertical plane.

5. The ultrasonic intracavitary needle introducer according to claim 4, characterized in that: The retaining assembly comprises a limiting ring (7) fixedly mounted on one end of one of the sliding rods (6) passing through the arc-shaped guide groove, and a rotating block (11) threadedly matched with the rotating block is mounted on the other end of the sliding rod (6) passing through the sliding rod (6).

6. The ultrasonic intracavitary needle introducer according to claim 3 or 5, characterized in that: A toggle block (10) is fixed to the top of the guide tube (12), and the toggle block (10) is located on the top of the mounting block (9).

7. The ultrasonic intracavitary needle introducer according to claim 4, characterized in that: The top of the arc-shaped guide block (8) is provided with a scale line (13) for displaying an angle, and the top of the toggle block (10) is provided with an arrow for indicating the corresponding swing angle of the guide tube (12).

8. The ultrasonic intracavitary needle introducer according to claim 2, characterized in that: An anti-slip pad (14) is fixed to the side of the clamping plate (3) that contacts the ultrasonic probe.

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