Cervical distraction catheter for promoting uterine contraction
By introducing support springs and automatic inflatable airbags into the cervical catheter, combined with mechanical and warm stimulation of the heating vibrator sleeve, the problems of insufficient catheter hardness and inconvenient airbag pressure monitoring are solved, achieving safer and more effective uterine contraction promotion.
Patent Information
- Application Number
- CN202411652050.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing catheter is not hard enough during the cervical insertion process, which increases the difficulty of operation; the airbag inflation pressure is inconvenient, which may lead to insufficient or excessive compression of the cervical expansion, and the inability to effectively stimulate the vaginal wall to enhance the uterine contraction effect.
The inner wall of the rubber hose insertion section is equipped with a support spring to increase hardness. The front end is equipped with an automatic inflatable balloon and a stretched airbag, and is equipped with a heated vibration sleeve to stimulate the vaginal wall by mechanical vibration and warmth. The air pressure is monitored by the controller and Control mechanical stimulation.
It improves the operational convenience of catheter insertion in the cervix, ensures the airbag inflation safely and effectively, enhances the uterine contraction effect, and improves the uterine contraction effect through mechanical and warm stimulation.
Smart Images
Figure CN119139602A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of medical devices, and in particular to a cervical dilation catheter for promoting uterine contractions. Background Art
[0002] Uterine contraction refers to the regular contraction of the uterus. It is an important monitoring indicator for clinical prenatal examinations of pregnant women. The main sign of labor is regular uterine contraction. Uterine contraction can cause the fetal heart rate to speed up or slow down. The condition of uterine contraction can directly affect the activity of the fetal heart and delivery. Clinically, pregnant women with no uterine contraction or weak uterine contraction should take timely and corresponding medical measures to promote uterine contraction to prevent accidents to the fetus during delivery. Current methods of promoting uterine contraction include physical stimulation or drug treatment; physical stimulation methods include climbing stairs, squatting and other exercises, and using low-position water bags to enter the cervical opening for physical dilation; drug treatment methods include vaginal administration and intravenous infusion of oxytocin. The method of using a low-position water bag to expand the cervix and promote uterine contractions is to insert a catheter into the cervix, inflate the air bag at the front end of the catheter with air or water, and the air bag will then expand and expand the cervix. During the expansion process, the cervix will stimulate the uterus to promote uterine contractions. In addition, oxytocin can be dripped into the cervix through the catheter, and the combination of drugs and water bag expansion can promote uterine contractions, thereby achieving a better effect of promoting uterine contractions.
[0003] However, the current use of catheters in conjunction with the infusion of oxytocin drugs to promote uterine contractions has the following problems: 1. In order to prevent the catheter from scratching the cervical wall during the insertion of the catheter into the cervix, the catheter is made of soft rubber material. The soft texture of the catheter improves safety but is not hard enough, which increases the difficulty of entering the cervix; 2. The airbag at the front end of the catheter is generally inflated by artificial inflation. There is a lack of effective monitoring measures for the air pressure after the airbag is inflated. When the air pressure in the airbag is insufficient, the uterus cannot be effectively expanded and stimulated, and excessive air pressure in the airbag will cause compressive damage to the inner wall of the cervix; 3. It is impossible to effectively mechanically stimulate the vaginal wall to increase the effect of promoting uterine contractions. Summary of the invention
[0004] In order to solve the above technical problems, the present invention provides a cervical dilation catheter for promoting uterine contractions, the dilation catheter adopts a rubber hose, and a support spring is arranged in the inner wall of the cervical insertion section of the rubber hose, the support spring can increase the hardness of the rubber hose without affecting the bending passability of the rubber hose, and the increased hardness of the rubber hose can reduce the difficulty of inserting it into the cervix; the front end of the dilation catheter is provided with an anti-slip balloon and a dilation airbag, the dilation airbag is automatically inflated and the pressure after inflation can be monitored, which can ensure both the safety of the dilation airbag and its uterine contraction-promoting effect; the rear of the dilation catheter is provided with a heating and vibration sleeve, which can perform mechanical vibration stimulation and thermal stimulation on the vaginal wall, thereby improving the uterine contraction-promoting effect of the entire device.
[0005] In order to achieve the above technical effects, the present invention is implemented by the following technical solutions: A cervical dilation catheter for promoting uterine contraction comprises a catheter body, wherein the front section of the catheter body is a cervical insertion section, a drug administration hole is opened at the front end of the cervical insertion section, a support spring is buried on the inner wall of the cervical insertion section, an anti-slip balloon is fixed on the front outer wall of the cervical insertion section, an dilation airbag is fixed on the rear outer wall of the cervical insertion section, a heating vibration sleeve is sleeved on the outer wall of the catheter body behind the cervical insertion section, the heating vibration sleeve can be slidably adjusted on the catheter body, a first inflation tube and a second inflation tube are led out from the rear of the catheter body, the front end of the first inflation tube is buried in the inner wall of the catheter body and is connected with the anti-slip balloon, the front end of the second inflation tube is buried in the inner wall of the catheter body and is connected with the dilation airbag, and the heating vibration sleeve and the second inflation tube are plug-connected with a controller.
[0006] Furthermore, the heating and vibration sleeve includes a hollow silicone sleeve, an electric heating wire is embedded in the outer side of the silicone sleeve wall, a flat vibration motor is embedded in the inner side of the silicone sleeve wall, the wires of the electric heating wire and the flat vibration motor are led out from the bottom of the silicone sleeve, and the wire connectors of the electric heating wire and the flat vibration motor are plugged into the controller.
[0007] Furthermore, the controller includes a cover and a base plate, the cover is fixed to the base plate, a display screen and operation buttons are fixed on the cover, a battery, a control circuit board and an air pump are fixed on the base plate, the display screen, operation buttons, battery and air pump are all connected to the control circuit board, an air pressure sensor is provided on the air outlet pipe of the air pump, the air pressure sensor is connected to the control circuit board, and the inflation connector of the second inflation pipe is plugged into the air outlet pipe port of the air pump.
[0008] Furthermore, a processing chip, a power supply module, an analog-to-digital conversion module, a digital-to-analog conversion module, a first relay, a second relay, a constant current source drive module, a vibration plug connector and a heating plug connector are fixed on the control circuit board; the display screen, operation buttons, power supply module, analog-to-digital conversion module, digital-to-analog conversion module and constant current source drive module are all connected to the processing chip, the first relay and the second relay are connected to the digital-to-analog conversion module, the heating plug connector is connected to the constant current source drive module, the air pump is connected to the first relay, the vibration plug connector is connected to the second relay, and the air pressure sensor is connected to the analog-to-digital conversion module.
[0009] The beneficial effects of the present invention are as follows: the expansion catheter adopts a rubber hose, and a support spring is arranged in the inner wall of the cervical insertion section of the rubber hose, the support spring can increase the hardness of the rubber hose without affecting the bending passability of the rubber hose, and the increased hardness of the rubber hose can reduce the difficulty of inserting it into the cervix; the front end of the expansion catheter is provided with an anti-slip balloon and an expansion airbag, the expansion airbag adopts an automatic inflation method and the pressure after inflation can be monitored, which can ensure both the safety of the expansion airbag and its uterine contraction-promoting effect; the rear of the expansion catheter is provided with a heating vibration sleeve, which can perform mechanical vibration stimulation and thermal stimulation on the vaginal wall, thereby improving the uterine contraction-promoting effect of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0011] Figure 1 It is a schematic diagram of the overall structure of a cervical dilation catheter used to promote uterine contractions; Figure 2 is a schematic diagram of the cross-sectional structure of the catheter body; Figure 3 It is a schematic diagram of the structure of the heating vibration sleeve after the upper half is cut open; Figure 4 is a schematic diagram of the structure of the control; Figure 5 It is a schematic diagram of the structural layout of the control circuit board.
[0012] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1-catheter body, 2-cervical insertion section, 3-drug administration hole, 4-infusion connector, 5-anti-slip balloon, 6-expanding airbag, 7-heating vibration sleeve, 8-first inflation tube, 9-controller, 10-second inflation tube, 11-conductor, 12-support spring, 13-heating wire, 14-flat vibration motor, 15-cover, 16-bottom plate, 17-display screen, 18-operation button, 19-battery, 20-control circuit board, 21-air pump, 22-air pressure sensor, 201-processing chip, 202-power module, 203-analog-to-digital conversion module, 204-digital-to-analog conversion module, 205-first relay, 206-second relay, 207-constant current source drive module, 208-vibration plug connector, 209-heating plug connector. DETAILED DESCRIPTION
[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0014] like Figure 1-2 As shown, a cervical dilation catheter for promoting uterine contraction comprises a catheter body 1, wherein the front section of the catheter body 1 is a cervical insertion section, a drug administration hole 3 is opened at the front end of the cervical insertion section 2, a support spring 12 is buried on the inner wall of the cervical insertion section, an anti-slip balloon 5 is fixed on the front outer wall of the cervical insertion section, an dilation airbag 6 is fixed on the rear outer wall of the cervical insertion section, a heating vibration sleeve 7 is sleeved on the outer wall of the catheter body behind the cervical insertion section, the heating vibration sleeve can be slidably adjusted on the catheter body, a first inflation tube 8 and a second inflation tube 10 are led out from the rear of the catheter body, the front end of the first inflation tube is buried in the inner wall of the catheter body and is connected with the anti-slip balloon, the front end of the second inflation tube is buried in the inner wall of the catheter body and is connected with the dilation airbag, and the heating vibration sleeve and the second inflation tube are plug-connected with the controller 10.
[0015] like Figure 3 As shown, the heating vibration sleeve includes a hollow silicone sleeve, an electric heating wire 13 is embedded in the outer side of the silicone sleeve wall, and a flat vibration motor 14 is embedded in the inner side of the silicone sleeve wall. The wires of the heating wire and the flat vibration motor are led out from the bottom of the silicone sleeve, and the wire connectors of the heating wire and the flat vibration motor are plugged into the controller.
[0016] like Figure 4As shown, the controller includes a cover 15 and a base plate 16, the cover is fixed on the base plate, a display screen 17 and operation buttons 18 are fixed on the cover, the operation buttons include a power switch button, an inflation control button, a heating control button and a vibration control button, a battery 19, a control circuit board 20 and an air pump 21 are fixed on the base plate, the display screen, the operation buttons, the battery and the air pump are all connected to the control circuit board, an air pressure sensor 22 is arranged on the air outlet pipe of the air pump, the air pressure sensor is connected to the control circuit board, and the inflation connector of the second inflation pipe is plugged into the air outlet pipe port of the air pump.
[0017] like Figure 5 As shown, a processing chip 201, a power module 202, an analog-to-digital conversion module 203, a digital-to-analog conversion module 204, a first relay 205, a second relay 206, a constant current source drive module 207, a vibration plug connector 208 and a heating plug connector 209 are fixed on the control circuit board, and the display screen, operation buttons, power module, analog-to-digital conversion module, digital-to-analog conversion module, and constant current source drive module are all connected to the processing chip, the first relay and the second relay are connected to the digital-to-analog conversion module, the heating plug connector is connected to the constant current source drive module, the air pump is connected to the first relay, the vibration plug connector is connected to the second relay, and the air pressure sensor is connected to the analog-to-digital conversion module.
[0018] In this embodiment, the processing chip uses the STM32F103 processing chip, the power module uses the AMS1117-3.3V power chip, the analog-to-digital conversion module uses the ADC0806 analog-to-digital conversion chip, the digital-to-analog conversion module uses the DAC0832 digital-to-analog conversion chip, the constant current source drive module uses the LM338 constant current source drive chip, and the first relay and the second relay use the J5V-1 micro relay.
[0019] A specific application of the device is: insert the cervical insertion section 2 of the catheter body 1 into the cervix along the vagina and the cervical opening, and after the front end of the cervical insertion section 2 enters the uterine cavity, inflate the anti-slip balloon 5 through the first inflation tube 8, and the anti-slip balloon 5 expands and blocks the uterine cavity at the rear end of the cervix after inflation, while the expansion balloon 6 is in the cervical channel, and the heating and vibration sleeve 7 is slid and adjusted to be in the vagina; plug the inflation connector of the second inflation tube into the outlet port of the air pump, plug the wire connectors of the heating wire and the flat vibration motor into the heating connector and the vibration connector respectively, press the power switch button of the controller, the whole device enters the power supply state, and the air pressure sensor detects the initial air pressure value in the expansion air bag and transmits it to the analog-to-digital conversion module, the analog-to-digital conversion module transmits it to the processing chip, the processing chip transmits it to the display screen for display, and presses Press the inflation control button, at this time the first relay connects the power supply circuit of the air pump, the air pump will inflate the inflated airbag, and the air pressure sensor on the air outlet pipe monitors the air pressure in the inflated airbag in real time and displays it on the display screen of the controller. After the air pressure reaches the target value, the inflation is stopped; then press the heating control button and the vibration control button, the constant current source drive module will output a constant current to the heating wire, the heating wire will generate heat after being energized and transmitted to the vaginal wall through the silicone sleeve, and the second relay connects the power supply circuit of the flat vibration motor 14, the flat vibration motor 14 vibrates after the channel, thereby stimulating the vaginal wall to strengthen the stimulation of the uterus, so as to achieve the purpose of promoting uterine contraction; the drip connector at the tail end of the catheter body 1 can be connected to the intravenous infusion line, and the drugs that promote uterine contraction are input into the uterus through the drug delivery hole by drip, so as to achieve the purpose of combined promotion of uterine contraction.
[0020] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
Claims
1. A cervical dilation catheter for promoting uterine contraction, comprising a catheter body, wherein the front section of the catheter body is a cervical insertion section, and a drug delivery hole is provided at the front end of the cervical insertion section, wherein: A supporting spring is embedded in the inner wall of the cervical insertion section, an anti-slip balloon is fixed on the front outer wall of the cervical insertion section, an expansion airbag is fixed on the rear outer wall of the cervical insertion section, a heating vibration sleeve is sleeved on the outer wall of the catheter body behind the cervical insertion section, the heating vibration sleeve can be slidably adjusted on the catheter body, a first inflation tube and a second inflation tube are led out from the rear of the catheter body, the front end of the first inflation tube is embedded in the inner wall of the catheter body and is through-connected with the anti-slip balloon, the front end of the second inflation tube is embedded in the inner wall of the catheter body and is through-connected with the expansion airbag, the heating vibration sleeve and the second inflation tube are plug-connected with the controller.
2. A cervical dilation catheter for promoting uterine contraction according to claim 1, characterized in that: The heating vibration sleeve comprises a hollow silicone sleeve, an electric heating wire is embedded in the outer side of the silicone sleeve wall, a flat vibration motor is embedded in the inner side of the silicone sleeve wall, the wires of the electric heating wire and the flat vibration motor are led out from the bottom of the silicone sleeve, and the wire connectors of the electric heating wire and the flat vibration motor are plugged into the controller.
3. A cervical dilation catheter for promoting uterine contraction according to claim 1 or 2, characterized in that: The controller includes a cover and a base plate, the cover is fixed to the base plate, a display screen and operation buttons are fixed to the cover, a battery, a control circuit board and an air pump are fixed to the base plate, the display screen, operation buttons, battery and air pump are all connected to the control circuit board, an air pressure sensor is provided on the air outlet pipe of the air pump, the air pressure sensor is connected to the control circuit board, and the inflation connector of the second inflation pipe is plugged into the air outlet pipe port of the air pump.
4. A cervical dilation catheter for promoting uterine contraction according to claim 3, characterized in that: A processing chip, a power module, an analog-to-digital conversion module, a digital-to-analog conversion module, a first relay, a second relay, a constant current source drive module, a vibration plug connector and a heating plug connector are fixed on the control circuit board; the display screen, operation buttons, power module, analog-to-digital conversion module, digital-to-analog conversion module and constant current source drive module are all connected to the processing chip; the first relay and the second relay are connected to the digital-to-analog conversion module; the heating plug connector is connected to the constant current source drive module; the air pump is connected to the first relay; the vibration plug connector is connected to the second relay; and the air pressure sensor is connected to the analog-to-digital conversion module.