Amniotic fluid puncture negative pressure suction device

Abstract

The utility model discloses an amniotic fluid puncture negative pressure suction device which comprises a liquid guide pipe column, the bottom end of the liquid guide pipe column is in through connection with a puncture needle, the top end of the liquid guide pipe column is in through connection with a connecting pipe head, the outer side of the liquid guide pipe column is fixedly connected with an external thread cylinder, the outer side of the external thread cylinder is in threaded connection with a hexagonal cylinder block, and the inner side of the hexagonal cylinder block is provided with connecting threads. A movable rod hole is formed in the top face of the hexagonal cylinder block in a penetrating mode, a supporting bent rod is arranged in the movable rod hole in a penetrating mode, and a supporting circular ring is fixedly connected to the bottom end of the supporting bent rod. The six sets of supporting bent rods drive the supporting circular rings at the bottom ends to penetrate through the corresponding movable rod holes to be connected with the hexagonal barrel block in a clamped mode, and during puncture, a puncture needle is accurately inserted into the body of a patient by holding a handle on the outer side of the catheter column or directly holding the supporting bent rods; the force application mode that the puncture needle is not directly removed facilitates improvement of the puncture precision, the sanitary condition is not affected, and the situation that the puncture precision is affected due to the fact that the handle is too far away from the needle head is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of amniotic fluid aspiration equipment, specifically an amniotic fluid puncture negative pressure aspiration device. Background Technology

[0002] Amniocentesis is a prenatal diagnostic procedure used to collect amniotic fluid from the fetus for testing. During amniocentesis, a negative pressure aspiration device is usually used to collect amniotic fluid samples. This device can help extract the required amniotic fluid samples by creating a negative pressure environment. The aspiration device generally uses disposable syringes to ensure a sterile and hygienic operating environment.

[0003] Existing amniocentesis negative pressure aspiration devices generally use a simple puncture needle structure. However, this single puncture needle structure does not have a support structure. As a result, when inserting the needle into the patient's body and when performing aspiration, the medical staff needs to hold the needle in place with one hand and hold the aspiration structure with the other. This operation can easily cause the needle to shift or the needle tip to rotate, thus causing more discomfort to the patient. Utility Model Content

[0004] The purpose of this invention is to address the problem that existing amniocentesis negative pressure aspiration devices generally use a simple puncture needle structure, but this single puncture needle structure lacks a support structure. As a result, when inserting the needle into the patient's body and performing aspiration, the medical personnel need to hold the needle in place with one hand and the aspiration structure with the other. This operation can easily lead to needle displacement or needle tip rotation, causing more discomfort to the patient. Therefore, this invention provides an amniocentesis negative pressure aspiration device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an amniocentesis negative pressure aspiration device, comprising: a fluid guiding column, a puncture needle being connected through the bottom end of the fluid guiding column, a connecting tube head being connected through the top end of the fluid guiding column, an external threaded cylinder being fixedly connected to the outside of the fluid guiding column, a hexagonal cylinder block being threadedly connected to the outside of the external threaded cylinder, a connecting thread being provided on the inner side of the hexagonal cylinder block, a movable rod hole being opened through the top surface of the hexagonal cylinder block, a supporting bent rod being inserted inside the movable rod hole, a supporting ring being fixedly connected to the bottom end of the supporting bent rod, a spring limiting groove being opened at one end of the inner side of the movable rod hole, a connecting spring being fixedly connected to one side of the spring limiting groove, and a rod abutment being fixedly connected to the other end of the connecting spring.

[0006] As a further embodiment of this utility model: the number and specifications of the external threaded cylinder and the hexagonal cylinder block are compatible, and the external threaded cylinder and the hexagonal cylinder block are connected by the thread on the outside of the external threaded cylinder and the connecting thread.

[0007] As a further improvement of this utility model: the number of movable rod holes is set to six, and they are symmetrically opened through the hexagonal cylindrical block in the radial direction. Each of the six sets of movable rod holes is provided with a supporting bent rod structure.

[0008] As a further improvement of this utility model: the supporting bent rod is configured as a rod structure with a bend near the bottom end, and the bending direction is radially outward along the hexagonal cylindrical block.

[0009] As a further improvement of this utility model: the bottom ends of the six sets of supporting bent rods are all fixedly connected to the same set of supporting rings, and the outer side of each supporting ring is wrapped with silicone material. The silicone material is soft and durable, can come into contact with the skin, and provides a comfortable touch and anti-slip function.

[0010] As a further improvement of this utility model: each of the six sets of movable rod holes is provided with a spring limiting groove, a connecting spring and a rod abutment structure. Each set of spring limiting grooves is fixedly connected with three sets of connecting springs and rod abutment structures, and the tensioning direction of the connecting springs is perpendicular to the direction of the supporting bent rod.

[0011] As a further embodiment of this utility model: a handle is fixedly connected to the top of the outer side of the liquid guiding tube column, a connecting conduit is connected to the top of the connecting tube head, and an injection tube is connected to the other end of the connecting conduit.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, the hexagonal cylindrical block is connected to the external threaded cylinder on the outside of the fluid guiding column via a connecting thread, which facilitates disassembly and replacement. Six sets of support bent rods drive the support rings at the bottom to pass through the corresponding movable rod holes and engage with the hexagonal cylindrical block. During puncture, the puncture needle is accurately inserted into the patient's body by holding the handle on the outside of the fluid guiding column or by directly holding the support bent rod. Holding the support bent rod brings the force application point closer to the needle tip of the puncture needle. This method of applying force without directly releasing the puncture needle improves the accuracy of puncture and does not affect hygiene, avoiding the impact on puncture accuracy caused by the handle being too far from the needle tip.

[0014] 2. The support rod passes through the movable rod hole and is engaged and limited by three sets of connecting springs and rod blocks in the spring limiting groove opened inside the movable rod hole. This elastic structure allows for easy adjustment of the position of the support rod while providing a certain support force to limit its position. The precise limiting structure can meet the needs of different puncture depths and prevents the puncture needle from shifting or rotating in the patient's body under the support of the six sets of support rods and support rings. This allows medical personnel to release the limitation of the puncture needle during operation and complete the aspiration operation of the injection tube through the connecting catheter and connecting tube head. The silicone material wrapped on the outside of the support ring is soft and durable, can contact the skin, and provides a comfortable touch and anti-slip function. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the amniocentesis negative pressure aspiration device described in this utility model;

[0016] Figure 2 This is a schematic diagram of the external threaded cylinder in the amniocentesis negative pressure suction device of this utility model;

[0017] Figure 3 This is a schematic diagram of the hexagonal cylindrical block in the amniocentesis negative pressure aspiration device of this utility model;

[0018] Figure 4 This is a schematic diagram of the supporting ring structure in the amniocentesis negative pressure aspiration device of this utility model;

[0019] Figure 5 This is a schematic diagram of the spring limiting groove in the amniocentesis negative pressure suction device described in this utility model.

[0020] In the diagram: 1. Fluid guiding tube; 2. Puncture needle; 3. Connecting tube head; 4. External threaded cylinder; 5. Hexagonal cylinder block; 6. Connecting thread; 7. Movable rod hole; 8. Supporting bent rod; 9. Supporting ring; 10. Spring limiting groove; 11. Connecting spring; 12. Rod stop block; 13. Handle; 14. Connecting catheter; 15. Injection tube. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0023] Reference Figures 1 to 5 In this embodiment of the present invention, an amniocentesis negative pressure aspiration device includes: a fluid guiding tube 1, a puncture needle 2 connected to the bottom end of the fluid guiding tube 1, a connecting tube head 3 connected to the top end of the fluid guiding tube 1, an external threaded cylinder 4 fixedly connected to the outside of the fluid guiding tube 1, a hexagonal cylinder block 5 screwed to the outside of the external threaded cylinder 4, a connecting thread 6 provided on the inside of the hexagonal cylinder block 5, a movable rod hole 7 penetrating through the top surface of the hexagonal cylinder block 5, a supporting bent rod 8 passing through the movable rod hole 7, a supporting ring 9 fixedly connected to the bottom end of the supporting bent rod 8, a spring limiting groove 10 opened at one end of the inner side of the movable rod hole 7, a connecting spring 11 fixedly connected to one side of the inner side of the spring limiting groove 10, and a rod abutment block 12 fixedly connected to the other end of the connecting spring 11.

[0024] Reference Figures 1 to 5The number and specifications of the external threaded cylinder 4 and the hexagonal cylinder block 5 are compatible, and the external threaded cylinder 4 and the hexagonal cylinder block 5 are connected by the external threaded cylinder 4's outer thread and the connecting thread 6. Six sets of movable rod holes 7 are provided, symmetrically arranged radially through the hexagonal cylinder block 5. Each of the six sets of movable rod holes 7 has a supporting bent rod 8 structure inside. The supporting bent rod 8 is a rod structure with a bend near the bottom, and the bend direction is radially outward along the hexagonal cylinder block 5. The bottom of the six sets of supporting bent rods 8... All ends are fixedly connected to the same set of support rings 9, and the outer side of the support rings 9 is covered with silicone material. The silicone material is soft and durable, can come into contact with the skin and provides a comfortable touch and anti-slip function. The inner side of each of the six sets of movable rod holes 7 is provided with a spring limiting groove 10, a connecting spring 11 and a rod stop block 12 structure. Each set of spring limiting grooves 10 is fixedly connected with three sets of connecting springs 11 and rod stop blocks 12 structures, and the tensioning direction of the connecting springs 11 is perpendicular to the direction of the support bent rod 8.

[0025] The above scheme is adopted: the support rod 8 passes through the movable rod hole 7 and is engaged and limited by three sets of connecting springs 11 and rod abutment blocks 12 in the spring limiting groove 10 opened inside the movable rod hole 7. This elastic structure can facilitate the adjustment of the position of the support rod 8 while providing a certain support force to limit the position of the support rod 8. The precise limiting structure can meet the needs of different puncture depths. Under the support of the six sets of support rods 8 and support rings 9, the fluid guide column 1 and the puncture needle 2 are protected from displacement or rotation in the patient's body, so that medical personnel can release the limitation of the puncture needle 2 by hand during operation.

[0026] Reference Figure 1 and Figure 2 A handle 13 is fixedly connected to the top of the outer side of the liquid guide column 1, and a connecting tube 14 is connected through the top of the connecting tube head 3. An injection tube 15 is connected through the other end of the connecting tube 14.

[0027] Using the above scheme: the injection tube 15 performs aspiration operation through the connecting catheter 14 and the connecting tube head 3.

[0028] The working principle of this utility model is as follows: During use, the hexagonal cylinder block 5 is screwed into the external threaded cylinder 4 on the outside of the fluid guiding column 1 via the connecting thread 6, facilitating disassembly and replacement. Six sets of supporting curved rods 8 drive the supporting ring 9 at the bottom to pass through the corresponding movable rod hole 7 and engage with the hexagonal cylinder block 5. During puncture, by holding the handle 13 on the outside of the fluid guiding column 1 or directly holding the supporting curved rod 8, the puncture needle 2 is accurately inserted into the patient's body. Holding the supporting curved rod 8 brings the force application point closer to the needle tip of the puncture needle 2. This method of not directly releasing the force from the puncture needle 2 improves puncture accuracy and does not affect hygiene. It avoids the handle 13 being too far from the needle tip, which could affect puncture accuracy. The supporting curved rod 8 passes through the movable rod hole 7 and is opened on the inner side of the movable rod hole 7. The three sets of connecting springs 11 and rod abutment 12 in the spring limiting groove 10 are engaged and limited. This elastic structure facilitates the adjustment of the position of the support rod 8 while providing a certain support force to limit the position of the support rod 8. The precise limiting structure can meet the needs of different puncture depths. Under the support of the six sets of support rods 8 and support rings 9, the fluid guide column 1 and the puncture needle 2 are prevented from shifting or rotating in the patient's body. This allows medical personnel to release the limitation of the puncture needle 2 with their hands during operation to complete the aspiration operation of the injection tube 15 through the connecting catheter 14 and connecting tube head 3. The silicone material wrapped on the outside of the support ring 9 is soft and durable, can contact the skin, and provides a comfortable touch and anti-slip function.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A negative pressure aspiration device for amniocentesis, characterized in that, include: A fluid guiding tube (1) is provided. A puncture needle (2) is connected to the bottom end of the fluid guiding tube (1). A connecting tube head (3) is connected to the top end of the fluid guiding tube (1). An external threaded cylinder (4) is fixedly connected to the outside of the fluid guiding tube (1). A hexagonal cylinder block (5) is screwed to the outside of the external threaded cylinder (4). A connecting thread (6) is provided on the inside of the hexagonal cylinder block (5). A movable rod hole (7) is opened through the top surface of the hexagonal cylinder block (5). A support bent rod (8) is passed through the movable rod hole (7). A support ring (9) is fixedly connected to the bottom end of the support bent rod (8). A spring limiting groove (10) is opened at one end of the movable rod hole (7). A connecting spring (11) is fixedly connected to one side of the spring limiting groove (10). A rod abutment (12) is fixedly connected to the other end of the connecting spring (11).

2. The amniocentesis negative pressure aspiration device according to claim 1, characterized in that, The number and specifications of the external threaded cylinder (4) and the hexagonal cylinder block (5) are compatible, and the external threaded cylinder (4) and the hexagonal cylinder block (5) are connected by the thread on the outside of the external threaded cylinder (4) and the connecting thread (6).

3. The amniocentesis negative pressure aspiration device according to claim 1, characterized in that, The number of movable rod holes (7) is set in six sets, and they are symmetrically opened through the hexagonal cylindrical block (5) in the radial direction. Each of the six sets of movable rod holes (7) is provided with a supporting bent rod (8) structure.

4. The amniocentesis negative pressure aspiration device according to claim 1, characterized in that, The supporting bent rod (8) is configured as a rod structure with a bend near the bottom end, and the bending direction is radially outward along the hexagonal cylindrical block (5).

5. The amniocentesis negative pressure aspiration device according to claim 1, characterized in that, The bottom ends of the six sets of support rods (8) are all fixedly connected to the same set of support rings (9), and the outer side of the support rings (9) is wrapped with silicone material. The silicone material is soft and durable, can come into contact with the skin and provides a comfortable touch and anti-slip function.

6. The amniocentesis negative pressure aspiration device according to claim 1, characterized in that, The inner side of each of the six sets of movable rod holes (7) is provided with a spring limiting groove (10), a connecting spring (11) and a rod abutment (12) structure. Each set of spring limiting grooves (10) is fixedly connected with three sets of connecting springs (11) and rod abutments (12) structures, and the tensioning direction of the connecting springs (11) is perpendicular to the direction of the supporting bent rod (8).

7. The amniocentesis negative pressure aspiration device according to claim 1, characterized in that, A handle (13) is fixedly connected to the top of the outer side of the liquid guiding column (1), and a connecting tube (14) is connected through the top of the connecting tube head (3), and an injection tube (15) is connected through the other end of the connecting tube (14).

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