CN109675176B

CN109675176B - Cervical dilatation balloon catheter convenient for liquid feeding

Info

Publication number: CN109675176B
Application number: CN201910150797.6A
Authority: CN
Inventors: 张正男; 徐玉茵; 周静; 段书霞; 刘康博; 石沛龙; 刘�东; 韩修恒; 刘帅超; 杨志平
Original assignee: Taipingyang Kangtai Scientific Apparatus Jinan Co ltd
Current assignee: TAIPINGYANG KANGTAI SCIENTIFIC APPARATUS (JINAN) Co.,Ltd.
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2021-02-26
Anticipated expiration: 2039-02-28
Also published as: CN109675176A

Abstract

The invention relates to a cervix dilatation balloon catheter convenient for liquid feeding, which effectively solves the problems that a patient is uncomfortable and liquid feeding is inconvenient when the existing cervix dilatation is carried out; the technical scheme includes that the catheter comprises a catheter, a first balloon, a second balloon and a third balloon are arranged on the catheter, a rotating shaft is arranged in the catheter, a baffle disc is arranged in the catheter and divides the catheter into an upper cavity and a lower cavity which are not communicated with each other, a first piston is arranged at the upper end of the rotating shaft in a rotating mode, a second piston is arranged at the lower end of the rotating shaft and connected with the first piston through an elastic pull rope, a first water injection pipe communicated with the lower cavity and the second balloon is arranged in a left side pipe wall interlayer of the catheter, a second water injection pipe communicated with the first balloon, the upper cavity and the third balloon is arranged in a right side pipe wall interlayer of the catheter, a piston cylinder communicated with the first water injection pipe and the second water injection pipe is arranged on the right side of the catheter, a third piston with a Y-shaped channel is arranged in the piston cylinder, and a first pressure spring with the upper end capable of moving.

Description

Cervical dilatation balloon catheter convenient for liquid feeding

Technical Field

The invention relates to the field of medical instruments, in particular to a cervical dilatation balloon catheter convenient for liquid feeding.

Background

The cervical dilatation balloon catheter is suitable for mechanical dilatation of a cervical orifice of a cervix with poor maturity before induced labor, the cervical dilatation balloon catheter usually needs to be placed in a human body for a period of time, the balloon can be gradually opened by the cervix during the period of time to realize induced labor effect, the conventional cervical dilatation balloon catheter adopts one-time liquid injection to prop up the balloon, the mechanical cervical orifice of a patient is directly opened in the manner of mechanical type, although the propping speed is high, the rigid propping mode can bring great discomfort to the patient, meanwhile, liquid injection is needed to be carried out into the balloon through a large-capacity needle cylinder when the balloon catheter feeds liquid, the water injection pipe is manually plugged after the liquid injection is completed, the risk that the water injection pipe is propped under the action of pressure exists in the process, at least two water injection pipes generally exist, and liquid injection needs to be carried out at least twice during the liquid injection, the operation is got up very inconveniently, and the liquid mode is annotated to the notes liquid of spacing sacculus by mainly relying on medical personnel's experience to the tradition simultaneously for there is certain artificial operation risk in annotating the liquid.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the cervical dilatation balloon catheter convenient for liquid feeding, which effectively solves the problem that the liquid feeding is inconvenient while the patient is uncomfortable during the conventional cervical dilatation.

The technical scheme for solving the problems comprises a vertically placed catheter with two closed ends, the upper end of the catheter is hemispherical, a first balloon, a second balloon and a third balloon are sequentially arranged outside the upper section of the catheter from top to bottom, a rotating shaft with the lower end extending out of the catheter is coaxially arranged inside the catheter, a baffle disc is arranged in the catheter and divides the catheter into an upper cavity and a lower cavity which are not communicated with each other, an external thread is arranged on the part of the rotating shaft arranged in the upper cavity, a first piston is spirally arranged on the external thread, the rotating shaft can be rotated to enable the first piston to move up and down in the first cavity, a tension spring is fixed at one end of the first piston close to the baffle disc, a second piston is arranged in the lower cavity, a pull rope is fixed on the end face of the second piston close to the baffle disc, the other end of the pull rope penetrates through the baffle disc to be fixedly connected with the other end of the tension spring, a first water injection pipe is arranged in the interlayer of the left pipe wall of the catheter, the first water injection pipe is communicated with the lower end cavity and the second balloon, a second water injection pipe is arranged in the interlayer of the right pipe wall of the catheter, the second water injection pipe is communicated with the first balloon, the upper end cavity and the third ball bag are communicated, the right side of the guide pipe is provided with a vertical piston cylinder, a first water injection pipe is communicated with the piston cylinder from the right side, a second water injection pipe is communicated with the piston cylinder from the left side, the first water injection port is communicated with the position lower than the second water injection port, a third piston is arranged in the piston cylinder, a Y-shaped channel is arranged in the third piston, two branch ports of the Y-shaped channel extend out from the side wall of the third piston, the left branch port is higher than the right branch port, a cross rod is arranged above the third piston, the cross rod is connected with the piston through a first pressure spring, the left end and the right end of the cross rod are provided with spring blocks, and two groups of grooves which are arranged side by side up.

The inflatable balloon is novel in concept, ingenious in structure and high in practicability, the balloon does not need to be completely inflated when the inflatable balloon is used by a patient due to the arrangement of the upper end cavity and the lower end cavity, the inflatable balloon can be inflated again when the inflatable balloon is used by the patient, the inflating process is rapid and convenient, and the experience of the patient is better.

Drawings

Fig. 1 is a front sectional view of the balloon of the present invention without infusion.

Fig. 2 is a front sectional view of the first balloon and the third balloon filled with liquid and the second balloon not filled with liquid according to the present invention.

FIG. 3 is a front cross-sectional view of the first, second and third balloons of the present invention fully inflated.

FIG. 4 is a front cross-sectional view of the present invention beginning with the addition of fluid to the first, second and third balloons.

FIG. 5 is a front view of the first, second and third balloons of the present invention fully inflated.

FIG. 6 is an enlarged view of a portion of the area A in FIG. 1 according to the present invention.

FIG. 7 is an enlarged view of a portion of the area B in FIG. 1 according to the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in the figures 1 to 7, the invention comprises a vertically placed catheter 1 with two closed ends, the upper end of the catheter 1 is hemispherical, a first balloon 2, a second balloon 3 and a third balloon 4 are sequentially arranged outside the upper half section of the catheter 1 from top to bottom, a rotating shaft 5 with the lower end extending out of the catheter 1 is coaxially arranged inside the catheter 1, a baffle disc 6 is arranged in the catheter 1, the baffle disc 6 divides the catheter 1 into an upper cavity and a lower cavity which are not communicated with each other, the part of the rotating shaft 5 arranged in the upper cavity is provided with an external thread, a first piston 7 is screwed on the external thread, the rotating shaft 5 is rotated to enable the first piston 7 to move up and down in the first cavity, one end of the first piston 7 close to the baffle disc 6 is fixedly provided with a tension spring 8, a second piston 9 is arranged in the lower cavity, a pull rope 10 is fixed on the end face of the second piston 9 close to the baffle disc 6, and the other end of the pull rope 10 passes, the first piston 7 moves upwards, the second piston 9 is driven by a pull rope 10 and a tension spring 8 to move upwards, a first water injection pipe 11 is arranged in a left pipe wall interlayer of the catheter 1, the first water injection pipe 11 is communicated with a lower end cavity and the second balloon 3, a second water injection pipe 12 is arranged in a right pipe wall interlayer of the catheter 1, the second water injection pipe 12 is communicated with the first balloon 2, an upper end cavity and the third balloon 4, a vertical piston cylinder 13 is arranged on the right side of the catheter 1, the first water injection pipe 11 is communicated with the piston cylinder 13 from the right side, the second water injection pipe 12 is communicated with the piston cylinder 13 from the left side, the communication position of the first water injection port is lower than that of the second water injection port, a third piston 14 is arranged in the piston cylinder 13, a Y-shaped channel 15 is arranged in the third piston 14, two branch ports of the Y-shaped channel 15 extend out from the side wall of the third piston 14, the branch port on the left side is higher than the branch, the cross rod 16 is connected with the piston through a first pressure spring 17, elastic blocks 18 are arranged at the left end and the right end of the cross rod 16, and two groups of grooves 19 which are arranged side by side up and down and matched with the elastic blocks 18 are arranged on the side wall of the piston cylinder 13.

In order to facilitate the rotation and fixation of the rotating shaft 5, the lower end of the rotating shaft 5 is sleeved with a shifting wheel 20 which synchronously rotates with the rotating shaft 5, a first sliding groove 21 is arranged on the inner edge surface of the shifting wheel 20, a sliding block 22 which is matched with the first sliding groove 21 is arranged on the outer circumferential surface of the rotating shaft 5, the shifting wheel 20 can axially move along the rotating shaft 5, a pin 23 is arranged on the lower end surface of the guide pipe 1, a plurality of positioning holes 24 which can be matched with the pin 23 are evenly distributed on the circumference of one end of the shifting wheel 20, which is close to the lower end surface of the guide pipe 1, the pin 23 is matched with the positioning holes 24, so that when the pin 23 is separated from the positioning holes 24.

In order to fix the tension spring 8 and the pull rope 10 conveniently, a first mounting disc 25 is fixed at the lower end of the first piston 7, the upper end of the tension spring 8 is fixed on the first mounting disc 25, a second mounting disc 26 is fixed at the upper end of the second piston 9, the lower end of the pull rope 10 is fixedly connected with the second mounting disc 26, and the other end of the pull rope 10 is fixedly connected with the other end of the tension spring 8.

In order to realize that the first pistons 7 can only move up and down but can not rotate, each first piston 7 is provided with a second sliding groove, and the inner wall of the guide pipe 1 is provided with a sliding rail 27 matched with the second sliding grooves.

In order to facilitate the positioning of the first balloon 2 and the third balloon 4, the first balloon 2 and the third balloon 4 are expanded to be conical, and the conical surfaces of the first balloon 2 and the third balloon 4 are opposite.

Two ends of the cross rod 16 are respectively provided with a blind hole 28, the elastic block 18 is arranged in the blind holes 28, the elastic block 18 is connected with the bottoms of the blind holes 28 through a second pressure spring 29, a slide way is arranged between the two grooves 19 on the same side, and the depth of the slide way is smaller than that of the grooves 19.

The baffle disc 6 is provided with a through hole for the pull rope 10 to pass through, the through hole is provided with a sealing ring, and the diameter of the through hole is smaller than that of the tension spring 8.

First water injection pipe 11 is located near fender dish 6 position with lower extreme cavity intercommunication mouth, and second water injection pipe 12 is close to the upper end of pipe 1 with the position of upper end cavity intercommunication, guarantees that first piston 7 and second piston 9 can not block up its feed liquor intercommunication mouth that corresponds when the motion.

In order to ensure the stability of the first piston 7 when driving the second piston 9 to move, at least two groups of pull ropes 10 and tension springs 8 are uniformly distributed between the first piston 7 and the second piston 9.

The initial state of the device is that the lower end position tension springs 8 of the two first pistons 7 located in the upper end cavity are in a non-stretching state, the upper end cavity is in a maximum space state, the second pistons 9 move to the lowest end position of the catheter 1, the first balloon 2, the second balloon 3 and the third balloon 4 are in a non-support state at the moment, the cross rod 16 is arranged in a group of grooves 19 at the lower end, and the Y-shaped channel 15 of the third piston 14 is not communicated with the first water injection pipe 11 and the second water injection pipe 12 in a self-stretching state of the first pressure springs 17.

The device is placed at the position of the cervix of a patient and is ensured that the first balloon 2 is positioned inside the cervix, the second balloon 3 is positioned at the position of the cervix, the third balloon 4 is positioned outside the cervix, normal saline is injected into the third balloon through the lower end necking position of the piston cylinder 13 at the moment, the third balloon is in an initial state, the Y-shaped channel 15 on the third piston 14 is not communicated with any water injection pipe, therefore, the third piston 14 is in a closed state, the third piston 14 moves upwards through a large-capacity needle cylinder to slowly inject liquid into the piston cylinder 13, the left branch opening of the Y-shaped channel 15 is communicated with the second liquid injection pipe on the left side of the piston cylinder 13, the normal saline enters the second water injection pipe 12, the second water injection pipe 12 is communicated with the first balloon 2, the upper end cavity and the third balloon 4, therefore, when the normal saline is injected, the first balloon 2, the upper end cavity and the third balloon 4 can all receive the normal saline, and the pressure is the same, so the first balloon 2, the upper end cavity and the third balloon 4 are gradually filled with normal saline, and the first balloon 2 and the third balloon 4 are expanded to position the cervix.

When the first balloon 2, the upper end cavity and the third balloon 4 are filled with liquid and reach the proper diameter, the proper diameter of the first balloon 2 and the third balloon 4 is controlled by the compression amount of the third piston 14 which moves upwards to press the first pressure spring 17, the third piston 14 moves upwards again and gradually leads the Y-shaped part to be separated from the second liquid inlet pipe 12 through the left branch port, meanwhile, the first pressure spring 17 compresses again along with the upward movement of the third piston 14, the elastic block 18 on the cross rod 16 is continuously pressed in the groove 19, the elastic block 18 has the tendency of being separated from the lower end groove 19, when the third piston 14 moves upwards to compress the first pressure spring 17 to enable the elastic force of the elastic block 18 to be separated from the lower end groove 19, the elastic block 18 is separated from the lower end groove 19, the cross rod 16 moves upwards to pass through the slide way and enter the upper end groove 19, the elastic force of the first pressure spring 17 is released, the third piston 14 moves upwards, the branch port of the Y-shaped channel at the right end of the third piston is communicated with the first liquid inlet pipe, water is injected into the lower end cavity and the second sacculus 3 through the first water injection pipe 11, the amount of the injected physiological saline is standard for a patient to feel that the physiological saline is spread but uncomfortable, the third piston 14 is reset downwards for a certain distance under the resetting action of the first pressure spring 17 after the injection is stopped, but the transverse rod 16 moves into the upper end groove 19 from the lower end groove 19 of the initial position, so that the third piston 14 is reset to a position where the branch port at the right end of the Y-shaped channel 15 is separated from the first liquid inlet pipe but the branch port at the left end is not communicated with the first liquid inlet pipe, and the third piston 14 blocks the first liquid inlet pipe and the second liquid inlet pipe.

At this time, because the second balloon 3 continuously stimulates the cervix of the patient, the cervix of the patient tends to expand continuously after being stimulated, after the patient feels that the cervix can expand again after a period of time, the positioning hole 24 on the second balloon is separated from the pin 23 by pulling the thumb wheel 20 downwards, at this time, the rotating shaft 5 is rotated, the part of the rotating shaft 5, which is positioned in the upper end cavity, drives the first piston 7 to move upwards, the first piston 7 moves upwards to realize the tightening of the pull rope 10, the second piston 9 moves upwards through the tension spring 8, the first piston 7 moves upwards as screw drive, at this time, the first piston 7 is in hard mechanical extrusion, so that the physiological saline in the upper end cavity is extruded into the first balloon 2 and the second balloon 3, meanwhile, the upwards movement of the first piston 7 is also the tendency that the second piston 9 moves upwards, but the tendency is driven by the tension spring 8 and the pull rope 10 together, the tension spring 8 has elasticity, so the second piston 9 is flexibly moved when moving upwards, and then the physiological saline is pushed into the second balloon 3 to realize the re-expansion of the second balloon 3.

Compared with the traditional balloon dilatation catheter 1, the device has the following advantages:

1. this device contrast traditional sacculus pipe 1 realize prestoring the normal saline of secondary expansion earlier to the upper end cavity and the lower extreme cavity in, treat after a period of stimulation patient's cervix open more time in realizing that the normal saline in first piston 7 extrusion upper end cavity enters into first sacculus 2 and third sacculus 4 through rotating shaft 5, it makes to realize that the liquid in second piston 9 extrusion lower extreme cavity gets into second sacculus 3 under the effect of extension spring 8 and stay cord 10 simultaneously to drive second piston 9, this process need not be at the drive of plus normal saline feed liquor, the lying-in woman can adjust by oneself according to its health, medical personnel's supplementary liquid feeding has been saved, time saving and convenience.

2. The normal saline in the upper end cavity in this device passes through the extrusion of screw thread drive's first piston 7, because first sacculus 2 is located the uterus, the two space application range is big in third sacculus 4 is located the birth canal, second sacculus 3 drives the extrusion that the cavity of second piston 9 flexible extrusion lower extreme realized normal saline through the effect of extension spring 8 and stay cord 10, the extrusion process contains the flexible of extension spring 8 and resets, the patient can be more comfortable when this process makes second sacculus 3 propped up.

3. It is little to place human initial stage uterus mouth opening in this device in, consequently first sacculus 2 and third sacculus 4 need not very greatly can realize the fixed to second sacculus 3, this device guarantees first sacculus 2 and third sacculus 4 and all expands earlier before the expansion of second sacculus 3 simultaneously, along with the increase of second sacculus 3, first sacculus 2 and third sacculus 4 also can increase, guarantee second sacculus 3 and be fixed a position all the time in this process, make the patient more comfortable and can effectively prevent deviating from of this device when using when making this device more humanized.

4. The device can extrude normal saline to enter an upper end cavity, a first sacculus 2 and a third sacculus 4 through a large-capacity needle cylinder by the up-and-down movement of a third piston 14 in a piston cylinder 13, the third piston 14 is pushed to move upwards after the pressure of the third piston reaches a certain degree, the first water injection pipe 11 is opened while the second water injection pipe 12 is blocked, the pressure of the normal saline which can enter the first water injection pipe 11 is not influenced by the pressure in the second water injection pipe 12, the first water injection pipe 11 and the second water injection pipe 12 can be simultaneously blocked under the reset action of a first pressure spring 17 after the liquid injection is completed, the operation is convenient and fast, the liquid inlet of the two water injection pipes can be realized without changing back and forth, the liquid injection of the first sacculus 2 and the third sacculus 4 can be realized by the fixed pressure provided by the first pressure spring 17, and the liquid injection pipe can be expanded to a proper size to replace the experience of traditional pipe medical personnel and the method for fixing the liquid to make the device more scientific, the second balloon 3 is expanded depending on the self-feeling of the puerpera, so that the device is more humanized to use.

Claims

1. The utility model provides a conveniently feed liquor's cervix dilatation sacculus pipe, including vertical place and both ends confined pipe (1), a serial communication port, the upper end of pipe (1) is hemispherical, first sacculus (2), second sacculus (3) and third sacculus (4) have been arranged in proper order to the outside from the top down of the first section of pipe (1), pipe (1) inside coaxial be equipped with a lower extreme and stretch out pivot (5) of pipe (1), be equipped with one fender dish (6) in pipe (1), fender dish (6) divide into pipe (1) two cavity that do not communicate each other from top to bottom, the part that upper end cavity was placed in to pivot (5) is equipped with the external screw thread, the external screw thread is equipped with a first piston (7) in a spinning, rotate pivot (5) and can make first piston (7) up-and-down motion in first cavity, the one end that first piston (7) are close to fender dish (6) is fixed with extension spring (8, a second piston (9) is arranged in the lower end cavity, a pull rope (10) is fixed on the end face, close to the baffle disc (6), of the second piston (9), the other end of the pull rope (10) penetrates through the baffle disc (6) and is fixedly connected with the other end of the tension spring (8), the first piston (7) moves upwards and drives the second piston (9) to move upwards through the pull rope (10) and the tension spring (8), a first water injection pipe (11) is arranged in a left side pipe wall interlayer of the catheter (1), the first water injection pipe (11) is communicated with the lower end cavity and the second balloon (3), a second water injection pipe (12) is arranged in a right side pipe wall interlayer of the catheter (1), the second water injection pipe (12) is communicated with the first balloon (2), the upper end cavity and the third balloon (4), a vertical piston cylinder (13) is arranged on the right side of the catheter (1), the first water injection pipe (11) is communicated with the piston cylinder (13) from the right side, and the second water injection pipe (12), first water filling port open position is less than second water filling port open position, be equipped with a third piston (14) in piston cylinder (13), be equipped with one Y shape passageway (15) in third piston (14), two mouths stretch out and the left side is propped up mouth and is higher than the right side and prop up the mouth from the lateral wall of third piston (14) for Y shape passageway (15), the top of third piston (14) is equipped with horizontal pole (16), be connected through first pressure spring (17) between horizontal pole (16) and the piston, both ends are equipped with bullet piece (18) about horizontal pole (16), be equipped with on the lateral wall of piston cylinder (13) two sets of upper and lower side by side arrange and with bullet piece (18) complex recess (19).

2. The cervical dilatation balloon catheter convenient for liquid feeding according to claim 1, wherein a shifting wheel (20) synchronously rotating with the rotating shaft (5) is sleeved at the lower end of the rotating shaft (5), a first sliding groove (21) is formed in the inner edge surface of the shifting wheel (20), a sliding block (22) matched with the first sliding groove (21) is arranged on the outer circular surface of the rotating shaft (5), the shifting wheel (20) can axially move along the rotating shaft (5), a pin (23) is arranged on the lower end surface of the catheter (1), and a plurality of positioning holes (24) matched with the pin (23) are uniformly distributed on the circumference of one end, close to the lower end surface of the catheter (1), of the shifting wheel (20).

3. The cervical dilatation balloon catheter convenient for liquid feeding according to claim 1, wherein a first mounting disc (25) is fixed at the lower end of the first piston (7), the upper end of the tension spring (8) is fixed on the first mounting disc (25), a second mounting disc (26) is fixed at the upper end of the second piston (9), the lower end of the pull rope (10) is fixedly connected with the second mounting disc (26), and the other end of the pull rope (10) is fixedly connected with the other end of the tension spring (8).

4. The cervical dilatation balloon catheter convenient for liquid feeding according to claim 1, wherein each first piston (7) is provided with a second sliding groove, and the inner wall of the catheter (1) is provided with a sliding rail (27) matched with the second sliding groove.

5. The cervical dilatation balloon catheter convenient for feeding liquid according to claim 1, wherein the first balloon (2) and the third balloon (4) are in a tapered shape after being expanded, and the tapered surfaces of the first balloon (2) and the third balloon (4) are opposite.

6. The cervical dilatation balloon catheter convenient for liquid feeding according to claim 1, wherein both ends of the cross rod (16) are respectively provided with a blind hole (28), the elastic block (18) is arranged in the blind hole (28), the elastic block (18) is connected with the bottom of the blind hole (28) through a second pressure spring (29), a slideway is arranged between the two grooves (19) on the same side, and the depth of the slideway is smaller than that of the groove (19).

7. The cervical dilatation balloon catheter convenient for liquid feeding according to claim 1, wherein the baffle disc (6) is provided with a through hole for a pull rope (10) to pass through, a sealing ring is installed on the through hole, and the diameter of the through hole is smaller than that of the tension spring (8).

8. The cervical dilatation balloon catheter convenient for liquid feeding according to claim 1, wherein the communicating port of the first water injection pipe (11) and the lower end cavity is positioned near the baffle disc (6), and the communicating port of the second water injection pipe (12) and the upper end cavity is positioned near the upper end of the catheter (1), so as to ensure that the first piston (7) and the second piston (9) do not block the corresponding liquid feeding communicating ports during movement.

9. The cervical dilatation balloon catheter convenient for liquid feeding according to claim 1, wherein at least two groups of pull ropes (10) and tension springs (8) are uniformly distributed between the first piston (7) and the second piston (9).