CN217793039U

CN217793039U - Intra-abdominal pressure measuring device

Info

Publication number: CN217793039U
Application number: CN202221434589.2U
Authority: CN
Inventors: 刘利群; 王娜
Original assignee: Xuanwu Hospital
Current assignee: Xuanwu Hospital
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-11-15
Anticipated expiration: 2032-06-08

Abstract

The utility model relates to an intra-abdominal pressure measuring device, at least comprising a three-way pipe, wherein the three-way pipe comprises an inner pipe and an outer pipe. Wherein, the inner tube sets up in the outer tube inside and with outer tube sealing connection. The outer tube and the inner tube are connected at one end inside the bladder of the patient, the outer tube is provided with a circumferential opening communicated with the air bag, and the inner tube is provided with an end face opening communicated to the inside of the bladder of the patient. The utility model discloses the three-way pipe that sets up has first pipe, second pipe and third pipe, and wherein first pipe and second pipe can cooperate the use, through the measuring mode of water column height, need not the plug three-way pipe, reach the purpose of measuring intra-abdominal pressure. The measuring method of the third catheter has continuity, so that the patient does not need to inject liquid in the bladder, the intra-abdominal pressure change condition of the patient is detected in real time, and the optimal rescue time is guaranteed.

Description

Intra-abdominal pressure measuring device

Technical Field

The utility model relates to an intra-abdominal pressure technical field especially relates to an intra-abdominal pressure measuring device.

Background

Bladder pressure, i.e. the pressure of the bladder. Since the bladder is an intra-abdominal structure, the change in pressure within the bladder reflects the change in intra-abdominal pressure, and thus the bladder pressure has a high correlation with the indirectly measured intra-abdominal pressure. Therefore, being considered as the "gold standard" for clinical indirect measurement of intra-abdominal pressure, monitoring of bladder pressure is of great importance for the treatment of critically ill patients, and in many clinical situations medical personnel are required to measure the bladder pressure of patients. In the prior art, physiological saline is injected, and then pressure measurement is carried out at intervals by a water column height or pressure sensor, but the method is time-consuming, has the risk of bladder infection and brings great pain to patients. Therefore, a measuring device which can relieve the pain of a patient and perform continuous manometry is urgently needed.

Chinese patent CN209269719U discloses a bladder pressure measuring device applied to intra-abdominal pressure detection, which has a simple structure, is convenient to operate, and has high accuracy; the measuring device comprises a pressure sensing module, the pressure sensing module is in communication connection with a control system, the pressure sensing module is connected with a catheter, and a first zero setting mechanism for calibration is arranged between the pressure sensing module and the catheter; the first zero setting mechanism is communicated with the pressure sensing module, and the first zero setting mechanism is communicated with the catheter. This patent is connected through zero setting mechanism and pressure sensing module, thereby the pressure size of measuring the U-shaped pipe reachs patient's bladder pressure size, and the defect of above-mentioned patent lies in: the device lacks utility due to the inaccuracy of the measured bladder pressure and hence of the calculated intra-abdominal pressure due to the varying amount of fluid in the patient's bladder, and is susceptible to the impression of external factors, such as external temperature, causing the measured pressure to vary when measured in this manner.

Chinese patent CN205649494U discloses a bladder pressure detecting device, which comprises a tube body and a pressure sensor assembly, wherein the tube body comprises an expansion end and a pressure detecting end which are oppositely arranged, the expansion end is used for extending into the bladder, the pressure sensor assembly comprises a tube joint and a pressure sensor, the tube joint is detachably connected to the pressure detecting end, and the pressure sensor is connected to one end of the tube joint, which is far away from the pressure detecting end. According to the bladder pressure detection device provided by the patent, the pipe joint is detachably connected to the pressure detection end of the pipe body, and then the pressure sensor is arranged on the pipe joint, so that the pressure sensor is far away from a urinary tract, and therefore urine cannot contaminate the pressure sensor; meanwhile, the pressure sensor is detachably connected to the pressure detection end, so that the pressure sensor can be directly reused after being directly pulled out, pollution infection diseases on the pressure sensor are not worried about, the use reliability of the bladder pressure detection device is improved, and meanwhile, the control of the manufacturing cost is facilitated. However, the disadvantages of this patent are: this patent separates pressure sensor and the flow path of patient's urine, and prevents this pressure sensor by the pollution, but this method can't be from solving pressure sensor's pollution problem at all, and the reliability is not high to this measuring method only can carry out interval pressure measurement, can't measure patient's bladder pressure size in succession, and repeated measurement can bring very big misery and infected risk for the patient.

Furthermore, on the one hand, due to the differences in understanding to those skilled in the art; on the other hand, since the inventor studied a lot of documents and patents when making the present invention, but the space did not list all details and contents in detail, however, this is by no means the present invention does not possess these prior art features, but on the contrary the present invention has possessed all features of the prior art, and the applicant reserves the right to increase the related prior art in the background art.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the technical scheme of the utility model a pressure measuring device in abdomen is provided, at least including the three-way pipe, the three-way pipe includes inner tube and outer tube, wherein, the inner tube set up in the outer tube inside and with outer tube sealing connection, outer tube and inner tube are connected at the inside one end of patient's bladder, and the outer tube is equipped with the circumference opening with the gasbag intercommunication, the inner tube is equipped with the terminal surface opening that communicates to patient's bladder inside.

According to a preferred embodiment, the balloon is arranged at the end of the tee which is to be inserted into the bladder of the patient, and the balloon is sealingly connected to the outer tube.

According to a preferred embodiment, a first valve is connected to the end of the inner tube remote from the patient's bladder and communicates with the first and second catheters, the first valve being arranged to communicate the inner tube independently to the first and second catheters, respectively.

According to a preferred embodiment, the first catheter is adapted to drain fluid from the bladder of the patient and is connected to a reservoir for storing fluid drained from the patient.

According to a preferred embodiment, the second catheter is used for injecting a liquid into the bladder of a patient, the second catheter being provided with measurement markers.

According to a preferred embodiment, a second valve for controlling the opening and closing of the outer tube is arranged at one end of the outer tube, which is far away from the balloon, wherein a liquid balancing assembly for balancing the liquid pressure inside the balloon is connected to the second valve through a third conduit.

According to a preferred embodiment, the liquid balance assembly comprises a liquid injector, a first chamber and a second chamber, the liquid injector is used for injecting liquid into the first chamber and the second chamber, the second chamber comprises a spring, a spring column and a movable chamber, the spring and the spring column are located inside the movable chamber, the spring column is used for fixing the spring, and the spring is connected to the upper end and the lower end of the movable chamber in the vertical direction.

According to a preferred embodiment, a third valve is provided between the liquid injector and the first chamber for sealing the first chamber after injection of liquid.

According to a preferred embodiment, the third conduit communicates between the outer tube and the first chamber and continues to a fourth valve provided with a pressure sensor for detecting a change in pressure of the balloon and a filter for venting gas from the device, the pressure sensor being arranged on the side of the fourth valve close to the first chamber, the filter being in communication with the atmosphere.

According to a preferred embodiment, the outer diameter of the second chamber is smaller than the inner diameter of the first chamber, and the second chamber is made of a flexible material or an elastic material.

The utility model has the advantages of:

(1) The utility model discloses the three-way pipe that sets up has first pipe, second pipe and third pipe, and wherein first pipe and second pipe can cooperate the use, through the measuring mode of water column height, need not the plug three-way pipe, reach the purpose of measuring intra-abdominal pressure. The measuring method of the third catheter has continuity, so that the patient does not need to inject liquid in the bladder, the intra-abdominal pressure change condition of the patient is detected in real time, and the optimal rescue time is guaranteed. Both methods can be adapted to a variety of use environments of the patient, for example when emergency measurements are made and the apparatus is crude, rapid measurements of the intra-abdominal pressure can be made by the first and second catheters;

(2) The utility model discloses a patient's bladder pressure that third pipe and liquid balance assembly obtained the continuity changes to the true condition of real-time reaction patient need not repeated measurement many times and has reduced medical staff's work burden and patient's misery, and the continuity is measured and is corresponded severe patient, very important technological means.

Drawings

Fig. 1 is a schematic structural view of a first catheter and a second catheter of an intra-abdominal pressure measuring device according to the present invention;

fig. 2 is a schematic structural view of a third catheter of the intra-abdominal pressure measurement device of the present invention.

List of reference numerals

1: a three-way pipe; 2: an air bag; 4: a first conduit; 5: a second conduit; 6: a third conduit; 7: a liquid balancing component; 101: an inner tube; 102: an outer tube; 103: a circumferential opening; 104: the end surface is open; 301: a first valve; 302: a second valve; 303: a third valve; 304: a fourth valve; 401: a liquid storage bag; 501: measuring the mark; 701: a liquid injector; 702: a first chamber; 703: a second chamber; 704: a spring; 705: a spring post; 706: a movable cavity; 707: a pressure sensor; 708: and (3) a filter.

Detailed Description

The following detailed description is made with reference to the accompanying drawings.

Examples

The application relates to an intra-abdominal pressure measuring device, at least comprising a three-way pipe 1, wherein the three-way pipe 1 comprises an inner pipe 101 and an outer pipe 102, the inner pipe 101 is arranged inside the outer pipe 102 and is in sealing connection with the outer pipe 102, the outer pipe 102 and the inner pipe 101 are connected at one end inside a bladder of a patient, the outer pipe 102 is provided with a circumferential opening 103 communicated with a balloon 2, and the inner pipe 101 is provided with an end face opening 104 communicated to the inside of the bladder of the patient. The inner tube 101 of the tee 1 is configured for draining internal fluids from the patient's bladder and for injecting fluids into the patient's bladder. The inner tube 101 is nested within the outer tube 102 and has the same central axis as the outer tube 102. The circumferential opening 103 is used for introducing fluid into the balloon 2, and the end opening 104 is used for draining or injecting fluid from the patient's bladder. Wherein the drained fluid may be urine from a patient and the fluid injected into the bladder of the patient may be sterile saline.

According to a preferred embodiment, the balloon 2 is arranged at the end of the tee 1 intended to be inserted into the bladder of a patient, and the balloon 2 is sealingly connected to the outer tube 102. Balloon 2 is configured as a spherical balloon adjacent the patient's bladder wall and communicating only with outer tube 102. The air bag 2 can measure the intra-abdominal pressure change of the patient in real time and continuously through the change of the fluid pressure in the air bag. It should be noted that the fluid may be a gas or a liquid or other fluid medium capable of reacting to pressure changes.

According to a preferred embodiment, a first valve 301 is connected to the end of the inner tube 101 remote from the patient's bladder, the first valve 301 being connected to the first catheter tube 4 and the second catheter tube 5, the first valve 301 being arranged in such a way as to independently connect the inner tube 101 to the first catheter tube 4 and the second catheter tube 5, respectively. The first valve 301 can be switched between the connection of the inner tube 101 to the first conduit 4 and the connection of the inner tube 101 to the second conduit 5, so that the three-way pipe 1 does not need to be repeatedly inserted and pulled out, and the pollution of the closed sterile pipe due to the penetration of a needle when a patient inputs saline water is prevented.

According to a preferred embodiment, the first catheter tube 4 is used for draining fluid from the patient's bladder and is connected to a reservoir bag 401 for storing the fluid discharged from the patient.

According to a preferred embodiment, the second catheter 5 is used for injecting a liquid into the bladder of a patient, the second catheter being provided with measurement markers 501.

According to a preferred embodiment, the first conduit 4 and the second conduit 5 are arranged in such a way that, in many complex fields, the measurement conditions are crude and precise detection tools are not available, so that the measurement method of the third conduit 6 cannot be used, and a next-level detection method is adopted. In particular, the second conduit 5 may be provided with measurement markings 501 which may take the form of a scale cmH ₂ O or mmHg. The measured water column height is the bladder pressure of the patient. After the patient has emptied his bladder of urine through the first catheter 4 while the patient is lying down, the first valve 301 is changed to allow 50ml of sterile isotonic saline to be delivered into the patient's bladder through the second catheter 5. And taking the pubic symphysis as a zero adjustment point, and measuring the water column height to be a pressure value. The unit of intra-abdominal pressure indicated is cmH ₂ O or mmHg as required in kPa. Preferably, a pressure sensor, a valve and a filter are also arranged in the second catheter 5 to make a more accurate measurement of the bladder pressure.

According to a preferred embodiment, the end of the outer tube 102 remote from the balloon 2 is provided with a second valve 302 for controlling the opening and closing of the outer tube 102, wherein the second valve 302 is connected with a liquid balancing assembly 7 for balancing the liquid pressure inside the balloon 2 through a third conduit 6. When measuring by pressure changes in the balloon 2, it is necessary to first keep the pressure in the balloon within a constant range. For example, the pressure inside the airbag 2 is maintained at 250mm of mercury (mmHg) ± 5mmHg, and at this time, the second valve 302 is in an open state.

According to a preferred embodiment, the liquid balancing assembly 7 comprises a liquid injector 701, a first chamber 702 and a second chamber 703, the liquid injector 701 is used for injecting liquid into the first chamber 702 and the second chamber 703, wherein the second chamber 703 comprises a spring 704, a spring column 705 and a movable cavity 706, the spring 704 and the spring column 705 are positioned inside the movable cavity 706, the spring column 705 is used for fixing the spring 704, and the spring 704 is connected to the upper end and the lower end of the movable cavity 706 in the vertical direction. A continuous or periodic change in fluid pressure within the bladder 2 can be detected by fluid balance. The liquid syringe 701 contains liquid inside, and the first chamber 702 and the third conduit 6 are filled with the liquid by injecting the liquid into the first chamber 702. The provision of the first and

second chambers

702, 703 enables the pressure in the third catheter tube 6 to be equalised with the pressure in the balloon 2 and used as a reference pressure for the pressure sensor 707, after which the change in pressure detected by the pressure sensor 707 is the change in pressure within the balloon 2, which change is completely dependent on the intra-abdominal pressure change of the patient, independent of any other pressure source for the components of the device, thereby resulting in a precise intra-abdominal pressure change for the patient. The baseline pressure of pressure sensor 707 is also 250mm Hg (mmHg) ± 5mmHg, while the variance is typically maintained between 5mm Hg and 30mm Hg, depending on the patient's physical signs.

In particular, the bladder pressure of a patient is detected by: when the patient's bladder pressure changes, the pressure exerted in the balloon 2 changes. If the pressure to which the bladder 2 is subjected increases, the bladder 2 compresses resulting in an increase in pressure in the liquid balancing assembly 7. If the pressure experienced by the bladder 2 decreases, the bladder 2 expands causing the pressure in the fluid balancing assembly 7 to decrease. The pressure can be continuously detected by the pressure sensor 707.

According to a preferred embodiment, a third valve 303 is provided between the liquid injector 701 and the first chamber 702 for sealing the first chamber 702 after injection of the liquid. After the injection of the liquid is completed, the liquid injector 701 is isolated by the third valve 303 so that the pressure in the liquid balance assembly 7 is not released.

According to a preferred embodiment, the third conduit 6 connects the outer tube 102 to the first chamber 702 and continues to the fourth valve 304, the fourth valve 304 is provided with a pressure sensor 707 for detecting a pressure change of the balloon 2 and a filter 708 for discharging gas from the device, the pressure sensor 707 is arranged on the side of the fourth valve 304 close to the first chamber 702, and the filter 708 is connected to the atmosphere. The filter 708 is used to expel non-fluid matter (e.g. air) present in the third conduit 6 before and during the introduction of the fluid.

According to a preferred embodiment, the outer diameter of the second chamber 703 is smaller than the inner diameter of the first chamber 702, and the second chamber 703 is made of a flexible or elastic material. The compression of the second chamber 703 is used to maintain the proper pressure and volume within the first chamber 702. The second chamber 703 equilibrates the liquid balancing assembly 7 when sufficient fluid is injected into the liquid balancing assembly 7. I.e. by adjusting the volume of the first chamber 702 and thereby the pressure in the liquid balancing assembly 7. This adjustment is due to the self-adjustment of the second chamber 703 in a closed environment.

Throughout this document, the features referred to as "preferably" are only an optional feature and should not be understood as necessarily requiring that such applicant reserves the right to disclaim or delete the associated preferred feature at any time.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and its drawings are illustrative and not restrictive on the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. An intra-abdominal pressure measuring device, characterized by comprising at least a three-way tube (1), said three-way tube (1) comprising an inner tube (101) and an outer tube (102), wherein,

the inner tube (101) is arranged inside the outer tube (102) and is connected with the outer tube (102) in a sealing mode, the outer tube (102) and the inner tube (101) are connected at one end inside the bladder of the patient, the outer tube (102) is provided with a circumferential opening (103) communicated with the air sac (2), and the inner tube (101) is provided with an end face opening (104) communicated to the inside of the bladder of the patient.

2. The intra-abdominal pressure measuring device according to claim 1, wherein the balloon (2) is disposed at an end of the tee (1) to be inserted into the patient's bladder, and the balloon (2) is sealingly connected to the outer tube (102).

3. An intra-abdominal pressure measuring device according to claim 2, wherein a first valve (301) is connected to an end of the inner tube (101) remote from the patient's bladder, the first valve (301) being connected to the first catheter tube (4) and the second catheter tube (5), the first valve (301) being arranged in such a way as to independently connect the inner tube (101) to the first catheter tube (4) and the second catheter tube (5), respectively.

4. An intra-abdominal pressure measuring device according to claim 3, wherein the first catheter tube (4) is adapted for draining fluid from the patient's bladder and is connected to a reservoir (401) for storing the fluid drained by the patient.

5. An intra-abdominal pressure measuring device according to claim 4, wherein the second catheter tube (5) is used for injecting a liquid into the patient's bladder, the second catheter tube being provided with measuring marks (501).

6. The intra-abdominal pressure measuring device according to claim 5, wherein an end of the outer tube (102) remote from the balloon (2) is provided with a second valve (302) for controlling the opening and closing of the outer tube (102), wherein the second valve (302) is connected with a liquid balancing assembly (7) for balancing the liquid pressure inside the balloon (2) through a third conduit (6).

7. The intra-abdominal pressure measuring device according to claim 6, wherein the liquid balancing assembly (7) comprises a liquid injector (701), a first chamber (702) and a second chamber (703), the liquid injector (701) being adapted to inject liquid into the first chamber (702) and the second chamber (703), wherein the second chamber (703) comprises a spring (704), a spring post (705) and a movable chamber (706), the spring (704) and the spring post (705) being located inside the movable chamber (706), the spring post (705) being adapted to fix the spring (704), the spring (704) being connected to the upper and lower vertical ends of the movable chamber (706).

8. An intra-abdominal pressure measuring device according to claim 7, wherein a third valve (303) for sealing the first chamber (702) after injection of liquid is provided between the liquid injector (701) and the first chamber (702).

9. An intra-abdominal pressure measuring device according to claim 8, wherein the third conduit (6) communicates between the outer tube (102) and the first chamber (702) and continues to a fourth valve (304), the fourth valve (304) being provided with a pressure sensor (707) for detecting a pressure change of the balloon (2) and a filter (708) for venting gas from the device, the pressure sensor (707) being arranged on the side of the fourth valve (304) near the first chamber (702), the filter (708) being in communication with the atmosphere.

10. The intra-abdominal pressure measuring device according to claim 9, wherein the second chamber (703) has an outer diameter smaller than an inner diameter of the first chamber (702), and the second chamber (703) is made of a flexible or elastic material.