Pre-positioning device for puncture

Abstract

The utility model discloses a pre-positioning device for puncture, which relates to the technical field of medical instruments and comprises a connecting tube, one end of the connecting tube is fixedly connected with a puncture needle, the outer wall of the puncture needle is in threaded connection with an adjusting block, and the outer wall of the puncture needle is provided with an outer screw. An outer screw is arranged on the outer wall of the adjusting block, an inner screw is arranged at the connecting position of the inner wall of the adjusting block and the outer screw, and a connecting rod is fixedly connected to the outer wall of the adjusting block. Under the threaded connection of the outer screw and the inner screw, the connecting rod is driven to do rotary telescopic motion, the telescopic rod is pulled, under the connection of the sliding groove, the positioning block is driven to pre-position the to-be-punctured part of a patient, the adjusting block is rotated after puncture of the puncture needle, and the effect of improving the precision of the puncture position of the patient by medical staff is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a pre-positioning device for puncture. Background Art

[0002] Puncture, a commonly used surgical term in medicine, is a diagnostic and treatment technique that involves inserting a puncture needle into a body cavity to extract secretions for laboratory tests, injecting gas or contrast agents into the body cavity for imaging examinations, or injecting drugs into the body cavity. The purpose of puncture is to draw blood for laboratory tests, transfuse blood, infuse fluids, and insert a catheter for angiography, etc.

[0003] However, when existing medical staff perform punctures, although they can perform puncture treatments on patients, when performing puncture treatments, they need to visually judge the puncture treatment position by the naked eye. The pre-positioning effect for the position to be punctured is not high, which may lead to errors when medical staff make visual judgments, resulting in multiple punctures and reducing the puncture treatment efficiency for patients.

[0004] Therefore, in view of this, in view of the deficiencies of the existing structure, research and improvement are carried out, and a pre-positioning device for puncture is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pre-positioning device for puncture to solve the problem of low pre-positioning effect for the position to be punctured as proposed in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A pre-positioning device for puncture, including a connecting pipe, one end of the connecting pipe is fixedly connected with a puncture needle, an adjusting block is threadedly connected to the outer wall of the puncture needle, an external spiral is arranged on the outer wall of the puncture needle, an internal spiral is arranged at the connection part between the inner wall of the adjusting block and the external spiral, a connecting rod is fixedly connected to the outer wall of the adjusting block, a telescopic rod is telescopically connected to the inner wall of the connecting rod, a sliding groove is arranged at the connection part between the inner wall of the connecting rod and the telescopic rod, one end of the telescopic rod is detachably connected with a positioning block, and a protective pad is arranged on the outer wall of the positioning block.

[0007] Further, one end of the telescopic rod is fixedly connected with a fixing block, a connecting block that is snap-fitted with the outer wall of the fixing block is fixedly connected to the outer wall of the positioning block, a pulling rod is slidably connected to the outer wall of the connecting block, a spring fixedly connected to the outer wall of the connecting block is sleeved on the outer wall of the pulling rod, one end of the spring is fixedly connected with a pulling block fixedly connected to one end of the pulling rod, and a clamping groove is arranged at the connection part between the outer wall of the fixing block and the pulling block.

[0008] Further, there are two groups of connecting rods, and the positions of the two groups of connecting rods are symmetric about the central axis of the adjusting block.

[0009] Further, the outer wall contour of the positioning block is arc-shaped, and the positioning blocks are symmetrically arranged on both sides of the puncture needle.

[0010] Further, the protective pad is elastic.

[0011] Further, there are two groups of fixing blocks, and the two fixing blocks and the positioning blocks are arranged in one-to-one correspondence.

[0012] Further, the inner wall contour of the card slot is larger than the outer wall contour of the pulling rod, and the outer wall contour of the contact part between the pulling rod and the fixing block is arc-shaped.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. Through the setting of the positioning block in the present utility model, when performing puncture treatment on a patient, in order to improve the puncture accuracy of the puncture site of the patient by medical staff, the adjusting block can be rotated first. Under the threaded connection of the external thread and the internal thread, the connecting rod is driven to perform rotational telescopic movement, and the telescopic rod is pulled. Under the connection of the sliding groove, the positioning block is driven to pre-position the puncture site of the patient, and the adjusting block is rotated back after the puncture needle punctures, so as to improve the puncture position accuracy of the patient by medical staff;

[0015] 2. Through the setting of the pulling rod in the present utility model, when performing positioning puncture on a punctured patient through the positioning block, when disassembling and replacing the positioning block for puncture positioning of different patients, the pulling rod can be pulled. Under the connection of the spring, the pulling rod slides out of the card slot, so as to achieve the effect of convenient disassembly between the positioning block and the telescopic rod, and reduce the occurrence of bacterial cross-infection between different patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the puncture needle;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the puncture needle in another direction;

[0018] Figure 3 It is a schematic diagram of the connection structure of the external thread and the internal thread;

[0019] Figure 4 It is a schematic diagram of the sectional view of the connection between the connecting rod and the telescopic rod;

[0020] Figure 5 It is a schematic diagram of the connection structure between the fixing block and the pulling rod.

[0021] In the figure: 1, connecting pipe; 2, puncture needle; 3, adjusting block; 4, external helix; 5, internal helix; 6, connecting rod; 7, telescopic rod; 8, sliding groove; 9, positioning block; 10, protective pad; 11, fixing block; 12, connecting block; 13, pulling rod; 14, spring; 15, pulling block; 16, clamping groove. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1: As Figures 1 - 4 shown, a pre-positioning device for puncture includes a connecting pipe 1. One end of the connecting pipe 1 is fixedly connected with a puncture needle 2. The outer wall of the puncture needle 2 is threadedly connected with an adjusting block 3. An external helix 4 is arranged on the outer wall of the puncture needle 2. An internal helix 5 is opened at the connecting part of the inner wall of the adjusting block 3 and the external helix 4. The outer wall of the adjusting block 3 is fixedly connected with a connecting rod 6. The inner wall of the connecting rod 6 is telescopically connected with a telescopic rod 7. A sliding groove 8 is opened at the connecting part of the inner wall of the connecting rod 6 and the telescopic rod 7. One end of the telescopic rod 7 is detachably connected with a positioning block 9. A protective pad 10 is arranged on the outer wall of the positioning block 9.

[0024] Furthermore, there are two groups of connecting rods 6. The positions of the two groups of connecting rods 6 are symmetrically distributed about the central axis of the adjusting block 3, which is beneficial to driving the synchronous telescopic movement of the two positioning blocks 9 by setting two groups of connecting rods 6 with positions symmetrically distributed about the central axis of the adjusting block 3.

[0025] Furthermore, the outer wall contour of the positioning block 9 is arc-shaped, and the positioning block 9 is symmetrically arranged on both sides of the puncture needle 2, which is beneficial to pre-positioning the puncture part of the patient by setting the outer wall contour of the positioning block 9 to be arc-shaped.

[0026] Furthermore, the protective pad 10 is elastic, which is beneficial to improving the comfort of contact between the positioning block 9 and the patient's skin by the elastic function of the protective pad 10.

[0027] Embodiment 2: As Figure 1 , Figure 2 and Figure 5As shown in the figure, a pre-positioning device for puncture proposed by the present utility model. Compared with the first embodiment, as another implementation manner of the present utility model, one end of the telescopic rod 7 is fixedly connected with a fixed block 11. An outer wall of the positioning block 9 is fixedly connected with a connecting block 12 that is engaged with an outer wall of the fixed block 11. An outer wall of the connecting block 12 is slidably connected with a pulling rod 13. A spring 14 that is fixedly connected with the outer wall of the connecting block 12 is sleeved on an outer wall of the pulling rod 13. One end of the spring 14 is fixedly connected with a pulling block 15 that is fixedly connected with one end of the pulling rod 13. A card slot 16 is opened at a connecting portion between the outer wall of the fixed block 11 and the pulling block 15. During operation, by providing the pulling rod 13, when the positioning puncture is performed on a puncture patient through the positioning block 9, and when the positioning block 9 needs to be disassembled and replaced for puncture positioning of different patients, the pulling rod 13 can be pulled. Under the connection of the spring 14, the pulling rod 13 slides out of the card slot 16, achieving the effect of convenient disassembly between the positioning block 9 and the telescopic rod 7, and reducing the occurrence of bacterial cross-infection between different patients.

[0028] Furthermore, two groups of fixed blocks 11 are provided, and the two fixed blocks 11 and the positioning block 9 are arranged in one-to-one correspondence, which is conducive to the convenient disassembly of the positioning block 9 at different positions through the one-to-one correspondence between the two fixed blocks 11 and the positioning block 9.

[0029] Furthermore, an inner wall contour of the card slot 16 is larger than an outer wall contour of the pulling rod 13, and an outer wall contour of a contact portion between the pulling rod 13 and the fixed block 11 is arc-shaped, which is conducive to reducing the occurrence of bacterial cross-infection between different patients through the setting that the inner wall contour of the card slot 16 is larger than the outer wall contour of the pulling rod 13.

[0030] Working principle: When using the pre-positioning device for puncture, first, when performing puncture treatment on a patient, in order to improve the puncture accuracy of the puncture site of the patient by medical staff, the adjusting block 3 can be rotated first. Under the threaded connection of the outer thread 4 and the inner thread 5, the connecting rod 6 is driven to perform rotational telescopic movement, and the telescopic rod 7 is pulled. Under the connection of the sliding groove 8, the positioning block 9 is driven to pre-position the puncture site of the patient, and after puncturing with the puncture needle 2, the adjusting block 3 is rotated back, achieving the effect of improving the puncture position accuracy of the patient by medical staff.

[0031] Finally, when performing positioning puncture on a puncture patient through the positioning block 9, and when the positioning block 9 needs to be disassembled and replaced for puncture positioning of different patients, the pulling rod 13 can be pulled. Under the connection of the spring 14, the pulling rod 13 slides out of the card slot 16, achieving the effect of convenient disassembly between the positioning block 9 and the telescopic rod 7, and reducing the occurrence of bacterial cross-infection between different patients.

[0032] This is the working principle of the pre-positioning device for puncture.

[0033] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present utility model and its practical applications, and to enable those of ordinary skill in the art to understand the present utility model so as to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A pre-positioning device for puncture, comprising a connecting tube (1), characterized in that: One end of the connecting tube (1) is fixedly connected to a puncture needle (2), the outer wall of the puncture needle (2) is threadedly connected to an adjusting block (3), the outer wall of the puncture needle (2) is provided with an outer spiral (4), the inner wall of the adjusting block (3) and the connecting portion of the outer spiral (4) are provided with an inner spiral (5), the outer wall of the adjusting block (3) is fixedly connected to a connecting rod (6), the inner wall of the connecting rod (6) is telescopically connected to a telescopic rod (7), a sliding groove (8) is provided at the connecting portion of the inner wall of the connecting rod (6) and the telescopic rod (7), one end of the telescopic rod (7) is detachably connected to a positioning block (9), and the outer wall of the positioning block (9) is provided with a protective pad (10).

2. A puncture pre-positioning device according to claim 1, characterized in that: One end of the telescopic rod (7) is fixedly connected to a fixed block (11); the outer wall of the positioning block (9) is fixedly connected to a connecting block (12) that is snap-connected to the outer wall of the fixing block (11); the outer wall of the connecting block (12) is slidably connected to a pulling rod (13); the outer wall of the pulling rod (13) is sleeved with a spring (14) that is fixedly connected to the outer wall of the connecting block (12); one end of the spring (14) is fixedly connected to a pulling block (15) that is fixedly connected to one end of the pulling rod (13); and a slot (16) is provided at the connection portion between the outer wall of the fixing block (11) and the pulling block (15).

3. A puncture pre-positioning device according to claim 1, characterized in that: Two groups of connecting rods (6) are provided, and the positions of the two groups of connecting rods (6) are distributed symmetrically with respect to the central axis of the adjustment block (3).

4. A puncture pre-positioning device according to claim 1, characterized in that: The outer wall profile of the positioning block (9) is in an arc shape, and the positioning blocks (9) are symmetrically arranged on both sides of the puncture needle (2).

5. A puncture pre-positioning device according to claim 1, characterized in that: The protective pad (10) is elastic.

6. A puncture pre-positioning device according to claim 2, characterized in that: Two groups of the fixing blocks (11) are provided, and the fixing blocks (11) and the positioning blocks (9) are arranged in a one-to-one correspondence.

7. A puncture pre-positioning device according to claim 2, characterized in that: The inner wall profile of the clamping groove (16) is larger than the outer wall profile of the pulling rod (13), and the outer wall profile of the contact portion between the pulling rod (13) and the fixing block (11) is in an arc shape.

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