A type of fetal head vacuum

Abstract

This invention provides a fetal head vacuum extractor, including a handle component, a suction cup component, and a ventilation and traction component connected to the suction cup component, as well as a traction force measuring component. A first end of the traction force measuring component is connected to the handle component, and a second end of the traction force measuring component is connected to a second end of the ventilation and traction component. An airflow channel for the measuring component is provided, connecting the airflow channel inside the handle and the airflow and traction component. The traction force measuring component includes a load-bearing base, on which a tension measuring component is disposed. The tension measuring component includes a measuring circuit board and a strain sensor connected to the measuring circuit board. A first end of the strain sensor is fixed to the load-bearing base, and a second end of the strain sensor is in a cantilever state, and the second end of the strain sensor is connected to the second end of the ventilation and traction component. This invention can be applied to obstetric surgery.

Description

Technical Field

[0001] This utility model relates to a medical device, and more particularly to a medical device that assists in childbirth. Background Technology

[0002] During childbirth, if a woman encounters difficulties, vacuum extraction is often used to assist the delivery process. Vacuum extraction is typically performed using a vacuum extractor. Specifically, the suction cup of the extractor is placed over the baby's head, and the air between the suction cup and the baby's head is removed. This negative pressure creates a bond between the suction cup and the baby's head. The operator then pulls on the suction cup, applying outward traction to the baby, which, combined with the mother's contractions, accelerates the delivery process. During this procedure, if the traction force is too weak, it will not provide effective assistance; if the traction force is too strong, it can cause injury to both the mother and the baby.

[0003] To address the issue of controlling traction force during tire suction operation, improvements have been made to the tire suction device by adding a traction force measuring component, allowing the operator to quantitatively monitor the applied force. For example, Chinese utility model patent number 202123204779.3, entitled "A Tire Suction Device," discloses a tire suction device with an added traction force indicator.

[0004] However, existing vacuum extractors with added traction force indicators still have the following problems in practice: Since the traction force indicator uses the tension of a spring as the basis for indicating traction force, which is similar to the principle of a spring scale, if the spring travel is too large during operation, the operator may misjudge the descent position of the fetal head; if the spring travel is set to be too small, the indication error of traction force will be larger, and the operator still cannot accurately grasp the traction force. Utility Model Content

[0005] To address the problem that existing tire head vacuums make it difficult for operators to accurately apply traction, this invention provides a tire head vacuum.

[0006] The technical solution of this utility model is as follows:

[0007] A tire head suction device includes a handle component and a suction cup component, as well as a ventilated traction component connected to the suction cup component. A first end of the ventilated traction component is connected to the suction cup component. An airflow channel is provided within the handle component. The ventilated traction component includes a ventilation pipe and a traction rope, and further includes a traction force measuring component. A first end of the traction force measuring component is connected to the handle component, and a second end of the traction force measuring component is connected to a second end of the ventilated traction component. An airflow channel for the measuring component is provided, connecting the airflow channel within the handle and the airflow traction component.

[0008] The traction force measuring component includes a load-bearing base, on which a tension measuring component is disposed; the tension measuring component includes a measuring circuit board and a strain sensor connected to the measuring circuit board; the first end of the strain sensor is fixed to the load-bearing base, the second end of the strain sensor is in a cantilever state, and the second end of the strain sensor is connected to the second end of the ventilation traction component.

[0009] Optionally, the strain sensor includes a strain substrate and a sensitive element disposed on the strain substrate; the sensitive element is disposed on the cantilever of the strain sensor.

[0010] Optionally, the strain substrate includes a U-shaped or L-shaped structure, and the end of one of the extended arms of the U-shape or L-shape is the second end of the strain sensor.

[0011] Optionally, the two ends of the strain sensor are connected to the second end of the ventilation traction component via a second connector.

[0012] Optionally, the second connector is provided with a second ventilation pipe transition structure; the second ventilation pipe transition structure includes a structure that connects the airflow channel of the measuring component with the ventilation traction component.

[0013] Optionally, a traction rope fixing structure is provided on the second connector.

[0014] Optionally, the airflow channel of the measuring component includes a retractable ventilation duct.

[0015] Optionally, the first end of the traction force measuring component is connected to the load-bearing base and the handle component via a first connector.

[0016] Optionally, the first connector is provided with a first ventilation pipe adapter structure; the first ventilation pipe adapter structure connects the airflow channel inside the handle and the airflow channel of the measuring component.

[0017] Optionally, the load-bearing base includes a load-bearing shell; the tensile force measuring component is disposed within the load-bearing shell.

[0018] The technical effects of this utility model are as follows:

[0019] The traction force measuring component of this invention connects the handle component and the suction cup component, and includes a strain sensor and a matching measuring circuit board. The strain sensor employs a strain-sensitive element; when the strain sensor undergoes a slight strain under traction force, it generates a corresponding electrical signal. This signal can be processed by the measuring circuit board to obtain an accurate value of the traction force. As can be seen from the above description, the tire head suction device of this invention can obtain accurate traction force values ​​without requiring significant deformation of the traction force measuring component, making it easy to operate. Furthermore, despite the small deformation of the strain sensor, due to the high sensitivity of the sensitive element, the measurement results obtained by the tire head suction device of this invention can still maintain high accuracy, achieving the purpose of this invention.

[0020] The further effects of the above-mentioned alternative methods will be explained in detail below with reference to specific implementation methods. Attached Figure Description

[0021] Figure 1 This is an external view of an embodiment of the present utility model.

[0022] Figure 2 for Figure 1 The illustrated embodiment is a view after removing the front part of the load-bearing housing of the traction force measuring component.

[0023] Figure 3 for Figure 2 The view shown is after the measuring circuit board has been removed.

[0024] Figure 4 for Figure 3 The first enlarged view of the shown view.

[0025] Figure 5 for Figure 4 A magnified view of a portion of the shown view.

[0026] Figure 6 for Figure 3 The second enlarged view of the shown view.

[0027] Figure 7 for Figure 6 A magnified view of a portion of the shown view.

[0028] Figure 8 for Figure 7 A cross-sectional view of the embodiment shown.

[0029] Figure 9 for Figure 3 A perspective view of the embodiment shown.

[0030] The markings in the image are explained as follows:

[0031] 101. Handle assembly; 102. Traction force measuring assembly; 103. Ventilation traction assembly; 104. Suction cup assembly;

[0032] 201. Load-bearing housing; 202. Measuring circuit board;

[0033] 301. Airflow channel for measuring components;

[0034] 401. First connector;

[0035] 501. Housing connection groove;

[0036] 601. Second connecting component;

[0037] 701. Strain sensor;

[0038] 801. Cavity; 802. Traction rope; 803. Fastener; 804. Airway;

[0039] 901, Sensitive element; 902, Screw hole. Detailed Implementation

[0040] The technical solution of this utility model will be described in detail below with reference to the embodiments shown in the accompanying drawings.

[0041] Figure 1 The appearance of an example of the tire head suction device of this utility model is shown. Figure 1 As shown, the tire head suction device includes a handle component 101, a traction measuring component 102, a ventilated traction component 103, and a suction cup component 104 connected in sequence. The first end of the ventilated traction component 103 is connected to the suction cup component 104, and the second end of the ventilated traction component 103 is connected to the second end of the traction measuring component 102; the first end of the traction measuring component 102 is connected to the handle component 101.

[0042] The suction cup component 104 is existing technology, used to adhere to the fetal head by negative pressure. The ventilation traction component 103 includes a ventilation tube and a traction rope disposed in the ventilation tube. At a first end of the ventilation traction component 103, one end of the ventilation tube is connected to the suction cup component 104, and the traction rope is also connected to the suction cup component 104.

[0043] The handle component 101 is existing technology. An airflow channel is provided in the handle component 101, and one end of the airflow channel is connected to a separately provided vacuum device.

[0044] Figure 2 exist Figure 1Based on this, part of the outer casing of the traction force measuring component 102 was removed, thereby exposing the internal configuration of the traction force measuring component 102. For example... Figure 2 As shown, a measuring circuit board 202 is provided on the traction force measuring component 102. The traction force measuring component 102 has an outer housing (load-bearing housing 201, i.e., load-bearing base). The material of the load-bearing housing 201 enables it to withstand the tensile force acting upon it. The measuring circuit board 202 is a component of the tensile force measuring component. The tensile force measuring component also includes a strain sensor 701 (see reference) electrically connected to the measuring circuit board 202. Figure 7 The measuring circuit board 202 can process the electrical signal obtained by the strain sensor 701 and obtain the corresponding force value, which is then displayed on the display screen on the measuring circuit board 202.

[0045] Figure 3 exist Figure 2 The measuring circuit board 202 has been removed, further revealing the internal structure of the traction measuring component 102. For example... Figure 3 As shown, a measuring component airflow channel 301 is provided inside the load-bearing housing 201. The measuring component airflow channel 301 is a flexible ventilation pipe, one end of which is connected to the airflow channel inside the aforementioned handle, and the other end of which is connected to the traction force measuring component 102, for connecting the airflow channel inside the handle and the traction force measuring component 102.

[0046] Figure 4 right Figure 3 The local structure was magnified. Figure 5 Yes Figure 4 An enlarged view of the circled area. For example... Figure 4 and Figure 5 As shown, one end of the airflow channel 301 of the measuring component is connected to the handle component 101 via a first connector 401. An airflow channel (not shown in the figure) is provided within the first connector 401, which communicates with both the airflow channel 301 of the measuring component and the airflow channel inside the handle (not shown in the figure), thereby connecting the airflow channel 301 of the measuring component to the airflow channel inside the handle. Simultaneously, the first connector 401 also connects the handle component 101 and the load-bearing housing 201. Figure 5 As shown, a housing connection groove 501 is provided on the outer surface of the first connector 401, and the load-bearing housing 201 is fastened in the housing connection groove 501, thereby realizing the connection between the load-bearing housing 201 and the handle component 101.

[0047] like Figure 6 As shown, the second connector 601 connects the load-bearing housing 201 and the ventilation traction component 103. Figure 7 The structure related to the second connector 601 is shown. For example... Figure 7As shown, the second connector 601 connects the airflow channel 301 of the measuring component and the ventilation traction component 103. At the same time, the second connector 601 also connects the strain sensor 701.

[0048] like Figure 8 As shown, a cavity 801 and an air passage 804 are connected inside the second connector 601. A connector is provided on the second connector 601, and the airflow passage 301 of the measuring component is sleeved on the connector and communicates with the air passage 804. A fastener 803 is also provided on the second connector 601. The fastener 803 is connected to the ventilation pipe of the ventilation traction component 103, and the fastener 803 is provided with a through hole, so that the ventilation pipe communicates with the cavity 801. At the same time, the fastener 803 can be connected to the traction rope of the ventilation traction component 103, thereby connecting the ventilation traction component 103 to the second connector 601 and enabling the ventilation pipe of the ventilation traction component 103 to be connected to the airflow passage 310 of the measuring component.

[0049] like Figure 9 As shown, the strain sensor 701 has a generally U-shaped strain substrate. A sensing element 901 is disposed on one protruding arm of the U-shape of the strain substrate. The sensing element 901 is electrically connected to the measuring circuit board 202. The bottom of the U-shape of the strain substrate is fixedly connected to the inner wall of the load-bearing housing 201, while the protruding arm of the U-shaped strain substrate with the sensing element 901 is in a cantilever state. The arm of the U-shaped strain substrate without the sensing element is fixedly connected to the inner wall of the load-bearing housing 201, increasing the connection strength between the strain substrate and the load-bearing housing 201. The end of the protruding arm of the strain substrate with the sensing element 901 is fixedly connected to the second connector 601 by a screw extending into the screw hole 902.

[0050] Combination Figures 1 to 9 The working process of the tire head suction device of this utility model will be described in order to further illustrate the technical solution of this utility model.

[0051] After the suction cup component 104 is placed on the fetal head, the vacuum device connected to the handle component 101 ensures that the suction cup component 104 fits tightly against the fetal head. Since the load-bearing housing 201 can withstand the corresponding tensile force, the operator can pull the suction cup component 104 using the handle component 101. The tensile force is transmitted to the suction cup component 104 via the first connector 401, the load-bearing housing 201, the strain sensor 701, the second connector 601, and the ventilation traction component 103. The tensile force causes deformation of the cantilever of the strain substrate, which is in contact with the sensitive element 901. This deformation excites the sensitive element 901 to generate an electrical signal, thereby obtaining the tensile force value. The deformation of the cantilever causes a change in the position of the second connector 701, but the airflow channel 301 of the measuring component can extend and retract within a certain range. Therefore, the change in the position of the second connector 701 will not cause the fetal head vacuum to malfunction. The operator can perform appropriate operations based on the tensile force value displayed on the screen on the measuring circuit board 202.

[0052] As can be seen from the above working process, the strain matrix does not need to undergo large deformation to obtain the tensile force value. Therefore, the operator will not misjudge the descent position of the fetal head. At the same time, due to the high sensitivity of the sensitive element 901, the measurement results obtained by the fetal head suction device can still have high accuracy.

[0053] It is worth noting that the above description is only a preferred embodiment of this utility model and does not limit the scope of patent protection of this utility model. This utility model can also improve the materials and structure of the above-mentioned components, or replace them with technical equivalents. Therefore, all equivalent structural changes made based on the description and drawings of this utility model, or direct or indirect applications to other related technical fields, are similarly included within the scope of this utility model.

Claims

1. A tire head suction device, comprising a handle component and a suction cup component, and a ventilating traction component connected to the suction cup component, wherein a first end of the ventilating traction component is connected to the suction cup component, an airflow channel is provided in the handle component, and the ventilating traction component includes a ventilation pipe and a traction rope, characterized in that: It also includes a traction force measuring component; the first end of the traction force measuring component is connected to the handle component, and the second end of the traction force measuring component is connected to the second end of the ventilated traction component; an airflow channel for the measuring component is provided, which connects the airflow channel inside the handle and the ventilated traction component; The traction force measuring component includes a load-bearing base, on which a tension measuring component is disposed; the tension measuring component includes a measuring circuit board and a strain sensor connected to the measuring circuit board; the first end of the strain sensor is fixed to the load-bearing base, the second end of the strain sensor is in a cantilever state, and the second end of the strain sensor is connected to the second end of the ventilation traction component.

2. The tire head vacuum cleaner according to claim 1, characterized in that: The strain sensor includes a strain matrix and a sensitive element disposed on the strain matrix; the sensitive element is disposed on the cantilever of the strain sensor.

3. The tire head vacuum cleaner according to claim 2, characterized in that: The strain substrate includes a U-shaped or L-shaped structure, and the end of one extended arm of the U-shaped or L-shaped structure is the second end of the strain sensing element.

4. The tire head vacuum cleaner according to claim 2, characterized in that: The two ends of the strain sensor are connected to the second end of the ventilation traction component via a second connector.

5. The tire head vacuum cleaner according to claim 4, characterized in that: The second connector is provided with a second ventilation pipe transition structure; the second ventilation pipe transition structure includes a structure that connects the airflow channel of the measuring component with the ventilation traction component.

6. The tire head vacuum cleaner according to claim 5, characterized in that: A traction rope fixing structure is provided on the second connector.

7. The tire head suction device according to claim 1, characterized in that: The airflow channel of the measuring component includes a retractable ventilation pipe.

8. The tire head vacuum cleaner according to claim 1, characterized in that: The first end of the traction force measuring component is connected to the load-bearing base and the handle component via a first connector.

9. A tire head suction device according to claim 8, characterized in that: The first connector is provided with a first ventilation pipe adapter structure; the first ventilation pipe adapter structure connects the airflow channel inside the handle and the airflow channel of the measuring component.

10. A tire head vacuum cleaner according to claim 1, characterized in that: The load-bearing base includes a load-bearing shell; the tensile force measuring component is disposed inside the load-bearing shell.

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