CN216675728U

CN216675728U - Be used for pressure jump monitoring devices between left ventricle and ascending aorta

Info

Publication number: CN216675728U
Application number: CN202122965255.XU
Authority: CN
Inventors: 徐承义; 宋丹; 彭剑; 郭卉; 田芳
Original assignee: Wuhan Asia Industrial Co ltd; WUHAN ASIA HEART HOSPITAL
Current assignee: Wuhan Asia Industrial Co ltd; WUHAN ASIA HEART HOSPITAL
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-06-07
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses a pressure step difference monitoring device used between a left ventricle and an ascending aorta, wherein an ascending aorta catheter is embedded into the outer wall of the left ventricle catheter, the end part of the ascending aorta catheter is provided with a first pressure measuring hole, the end part of the left ventricle catheter exceeds the first pressure measuring hole, the end part of the left ventricle catheter is provided with a second pressure measuring hole, and the side wall of the left ventricle catheter close to the second pressure measuring hole is provided with a third pressure measuring hole. The defect that in the prior art, two times of puncture and two puncture paths are needed for measuring the pressure step difference between the left ventricle and the ascending aorta, two sets of systems need to be operated and controlled by two sets of personnel, and the requirement on the operation adaptability is high is overcome. The device for monitoring the pressure step difference between the left ventricle and the ascending aorta has reasonable overall structural design, and solves the problem that the existing left ventricle-ascending aorta pressure measuring catheter can not realize one-time measurement clinically. The operation steps and the method are completely the same as the left ventricle catheter puncture intervention method, and the technical difficulty is not increased.

Description

Be used for pressure jump monitoring devices between left ventricle and ascending aorta

Technical Field

The utility model relates to the technical field of structural design of a device for monitoring pressure step difference between a left ventricle and an ascending aorta for treating heart diseases, in particular to a device for monitoring pressure step difference between the left ventricle and the ascending aorta.

Background

Currently, the diagnosis standard of hypertrophic obstructive cardiomyopathy and the standard of non-drug intervention are the pressure step (LVOTG) between the left ventricle and the aorta from which the left ventricle flows out in a resting state or an excited state, and when the pressure step is greater than or equal to 50mmHg, hypertrophic obstructive cardiomyopathy can be diagnosed.

The method for obtaining the pressure step difference comprises the following steps: non-invasive cardiac ultrasound (stress testing if necessary) and invasive left ventricular catheter pressure determination. However, the results of left ventricular catheter pressure measurements are still required for non-drug intervention therapy.

Conventional left ventricular catheter pressure determination requires: two puncture paths (bilateral radial artery or femoral artery on one side of radial artery), and two manometry catheters. The two pressure measuring catheters extend into the left ventricle and the ascending aorta respectively, and the tail ends of the two pressure measuring catheters are connected with two sets of pressure monitoring systems respectively so as to measure the pressure of the left ventricle and the pressure of the ascending aorta.

Therefore, in order to treat hypertrophic obstructive cardiomyopathy, two times of puncture and two puncture paths are needed for measuring the pressure step difference between the left ventricle and the ascending aorta, two sets of systems need to be operated and controlled by two sets of personnel, the requirement on the operation adaptability is high, and the needed labor cost is high; meanwhile, the puncture degree to the patient is increased, and the possibility of damaging the blood vessel of the patient is increased by two times.

SUMMERY OF THE UTILITY MODEL

In view of this, the main objective of the present invention is to provide a device for monitoring pressure level difference between the left ventricle and the ascending aorta, which has a reasonable overall structural design, reduces the overall size requirements of the left ventricle catheter and the ascending aorta, reduces the carrying capacity of the blood vessel, further can realize the function of monitoring the pressure of the left ventricle and the ascending aorta through one-time puncture interventional operation, and reduces the pain of the patient caused by puncture.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a device for monitoring the pressure step difference between the left ventricle and the ascending aorta, comprising: left ventricular catheter and ascending aortic catheter; the ascending aorta catheter is embedded into the outer wall of the left ventricle catheter, a first pressure measuring hole is formed in the end portion of the ascending aorta catheter, the end portion of the left ventricle catheter exceeds the first pressure measuring hole, a second pressure measuring hole is formed in the end portion of the left ventricle catheter, and a third pressure measuring hole is formed in the side wall, close to the second pressure measuring hole, of the left ventricle catheter.

In a preferred embodiment, the left ventricular catheter has a concave structure on one side of the cross section, the ascending aortic catheter is embedded in the concave structure, and the cross sections of the left ventricular catheter and the ascending aortic catheter are generally circular structures.

In a preferred embodiment, the diameter of the circular structure is 3 mm.

In a preferred embodiment, the tail ends of the left ventricular catheter and the ascending aortic catheter are separated and are respectively connected with a pressure monitoring system, and the diameters of the separated sections of the left ventricular catheter and the ascending aortic catheter are respectively 2.5mm of the diameter of the left ventricular catheter and 1.5mm of the diameter of the ascending aortic catheter.

In a preferred embodiment, the diameter of the left ventricular catheter beyond the first pressure tap is 3 mm.

In a preferred embodiment, the distance between the first pressure tap and the third pressure tap is 20 mm.

In a preferred embodiment, the end of the first pressure tap is in smooth transition with the outer wall of the left ventricular catheter.

In a preferred embodiment, the opening of the first pressure measuring cell has a crescent-shaped configuration.

In a preferred embodiment, the end of the lv catheter beyond the first pressure tap has a circular arc-shaped configuration with a circular arc angle greater than 270 °.

In a preferred embodiment, the second pressure tap end has a closed-off structure.

In a preferred embodiment, the third pressure measuring holes are symmetrically arranged on two sides of the left ventricle catheter, and the two third pressure measuring holes are coaxially arranged.

In a preferred embodiment, the axial directions of the two third pressure measuring holes are perpendicular to the plane of the circular arc structure.

In a preferred embodiment, the third pressure tap is provided at 270 ° of the rounded structure near the end of the lv catheter.

The pressure step difference monitoring device for the left ventricle and the ascending aorta has the following beneficial effects:

the device for monitoring the pressure step difference between the left ventricle and the ascending aorta comprises: left ventricular catheter and ascending aortic catheter; ascending aorta pipe embedding left ventricle pipe outer wall sets up, and first pressure cell has been seted up to ascending aorta pipe tip, and left ventricle pipe tip surpasss first pressure cell setting, has seted up the second pressure cell at the tip of left ventricle pipe, has seted up the third pressure cell at the lateral wall that left ventricle pipe is close to the second pressure cell.

The problems that in the prior art, in order to treat hypertrophic obstructive cardiomyopathy, two times of puncture and two puncture paths are needed for measuring the pressure step difference between the left ventricle and the ascending aorta, two sets of systems need to be operated and controlled by two sets of personnel, the requirement on the operation adaptability is high, and the required labor cost is high are solved; meanwhile, the puncture degree to the patient is increased, and the possibility of damaging the blood vessel of the patient is increased by two times.

The device for monitoring the pressure step difference between the left ventricle and the ascending aorta has reasonable overall structural design, and solves the problem that the existing left ventricle-ascending aorta pressure measuring catheter can not realize one-time measurement clinically. And the operation steps and the method are completely the same as the left ventricle catheter puncture intervention method, and no difficulty is technically increased. Furthermore, the left ventricle-ascending aorta pressure difference measurement can be completed simultaneously through one-time operation, so that the operation is very quick, and the monitoring efficiency is improved. Thirdly, the monitoring device does not need two-part puncture, reduces the pain of patients and saves the operation time and the labor cost. The ascending aorta catheter and the left ventricle catheter in an embedding mode generally reduce the requirement of the whole size, reduce the bearing capacity of blood vessels and ensure the success of puncture operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the general structure of a pressure level difference monitoring device for use between the left ventricle and the ascending aorta according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of the pressure level difference monitoring device at the insertion end for use between the left ventricle and the ascending aorta of FIG. 1 according to one embodiment of the present disclosure;

FIG. 3 is a partial enlarged view at A of the device for monitoring the pressure step difference between the left ventricle and the ascending aorta of FIG. 1 according to one embodiment of the present disclosure;

fig. 4 is a partial enlarged view at B of the pressure step monitoring device for a left ventricle and ascending aorta shown in fig. 1 according to an embodiment of the present disclosure.

[ description of main reference symbols ]

1. A left ventricular catheter;

11. an overrun segment; 12. an embedding section; 13. a separation section;

2. an ascending aorta catheter;

31. a first pressure tap; 32. a second pressure tap; 33. and a third pressure tap.

Detailed Description

The following describes the pressure step difference monitoring device for use between the left ventricle and the ascending aorta according to the present invention in further detail with reference to the accompanying drawings and embodiments of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that, for example, embodiments of the application described herein may be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1, 2, 3 and 4, the apparatus for monitoring the pressure level difference between the left ventricle and the ascending aorta comprises: a left ventricle catheter 1 extending into the left ventricle to monitor the left ventricle pressure and an ascending aorta catheter 2 extending only into the ascending aorta to monitor the ascending aorta internal pressure. In order to reduce the defects that the whole monitoring device has overlarge size and causes secondary damage to a patient in the process of extending into the puncture operation process and the puncture input defect that two catheters need to be ensured by puncturing the patient twice in the prior art. This ascending aorta pipe 2 embedding left ventricle pipe 1 outer wall sets up, makes ascending aorta pipe 2 and left ventricle pipe 1 generally be an organic whole structure, in a puncture operation in-process to can be with two pipes puncture input once, and the setting mode of embedding, guarantee to reduce the maximum size of two pipes, reduce the damage possibility to patient puncture blood vessel, reduce patient's misery to and the relevant complication risk of blood vessel. The embedding mode is also simpler, can heat left ventricle pipe 1 after finishing with two pipe processing to when heating to reaching to be close to the molten state, press the embedding into left ventricle pipe 1 outer wall with ascending aorta pipe 2, also further guaranteed the embedding in-process, the inseparable degree of fusion between ascending aorta pipe 2 and the left ventricle pipe 1 reduces overall dimension.

The ascending aorta catheter 2 and the left ventricle catheter 1 are embedded into an integral structure, so that two puncture operations are further avoided, the operation time is saved, and the exposure time and the labor cost of a patient in an X-ray environment are reduced. The left ventricle-ascending aorta pressure difference measurement can be completed simultaneously by one operation, and the operation is very quick. The operation mode is completely the same as that of the traditional catheter puncture for entering the left ventricle, and any difficulty is not increased technically.

Certainly, in order to satisfy the monitoring effect on the internal pressure of the ascending aorta, the end of the ascending aorta catheter 2 is provided with a first pressure measuring hole 11 (preferably, a Marker which is opaque to X-rays is arranged at the first pressure measuring hole 31, and it is confirmed that the side hole is located in the ascending aorta during the pressure measurement in the operation), and in the puncture extending process, it is ensured that the first pressure measuring hole 31 is inside the ascending aorta, and the monitoring effect on the pressure of the ascending aorta is satisfied. For monitoring the pressure in the left ventricle, the end of the left ventricular catheter 1 is arranged beyond the first pressure measuring hole 31, so that the part for monitoring the pressure in the left ventricle can be ensured to extend into the left ventricle (namely, the second pressure measuring hole 32 and the third pressure measuring hole 33 are both arranged in the left ventricle). In order to ensure the monitoring effect on the pressure inside the left ventricle, a second pressure measuring hole 32 is formed at the end part of the left ventricle catheter 1, and a third pressure measuring hole 33 is formed on the side wall of the left ventricle catheter 1 close to the second pressure measuring hole 32. The design of the second pressure measuring hole 32 and the third pressure measuring hole 33 not only ensures the pressure measuring requirement, but also can avoid the problem that the left ventricle is damaged due to overlarge pressure in one direction through a plurality of holes (the second pressure measuring hole 32 and the third pressure measuring hole 33) if the contrast medium is injected into the left ventricle.

In order to ensure that the overall size of the monitoring device is minimum in the whole puncture surgery process, the monitoring function that two pipelines puncture and extend into the pressure step difference at the same time can be met. Furthermore, the left ventricle catheter 1 needs to extend into the left ventricle, and the length of the left ventricle catheter 1 needs to be larger than that of the ascending aorta catheter 2, so that one side of the cross section of the left ventricle catheter 1 is of a concave structure, the ascending aorta catheter 2 is embedded into the concave structure, the minimum notch at the end part of the ascending aorta catheter 2 is ensured, and the possibility of damaging the blood vessel of a patient in the puncture process through an operation is further reduced. Furthermore, in order to ensure the minimum transverse size of the whole left ventricle catheter 1 and the ascending aorta catheter 2, the bearing requirement of the blood vessel during the puncture process is further reduced. The left ventricular catheter 1 and the ascending aortic catheter 2 have a generally circular cross-section (in the insertion section 12; the insertion section 12 refers to the portion of the left ventricular catheter 1 and the ascending aortic catheter 2 that are inserted into one piece).

Preferably, in order to ensure the monitoring requirement of pressure during monitoring and the requirement of injection amount during the injection of the contrast agent, the diameter of the circular structure is selected to be 3mm (outer diameter 6F) through reasonable design. Preferably, the entire monitoring device is a tubular structure, and the overall length is preferably 1100 mm.

Of course, in order to meet the requirement of monitoring the internal pressure of the left ventricle and the ascending aorta, the left ventricle catheter 1 and the ascending aorta catheter 2 are separated from each other at the tail ends (the separated part is a separated section 13 in a "Y" shape as shown in fig. 1), and are respectively connected with a pressure monitoring system. Preferably, the diameters of the separated sections of the left ventricular catheter 1 and the ascending aorta catheter 2 are respectively 2.5mm for the left ventricular catheter 1 and 1.5mm for the ascending aorta catheter 2. Through the embedded structural design, two catheters are prevented from being used by puncturing at the same time, so that the maximum size is 4mm (2.5+1.5 is equal to 4); the maximum size is only 3mm by the embedded design mode, and the requirements of pressure monitoring and contrast agent injection can be met.

The left ventricular catheter 1 can accommodate a 0.035 "guidewire, the end of which is connected to a pressure measurement system.

In order to puncture the in-process, whole monitoring devices outer wall is smooth column structure, avoids the problem of puncture in-process to patient's blood vessel fish tail. The diameter of the protruding section 11 of the left ventricular catheter 1 beyond the first pressure tap 31 is 3 mm. 3mm is the maximum size that whole monitoring devices stretches into patient's blood vessel, and the smoothness of process is intervened in the puncture to the homogeneity of size.

Since the minimum left ventricular size of a human (most adults) is: about 30mm, the distance between first pressure measurement hole 31 and the third pressure measurement hole 33 is 20mm, guarantees that first pressure measurement hole 31 is when ascending aorta is inside, and third pressure measurement hole 33 is inside the left ventricle, and left ventricle pipe 1 is the complete diastole state, avoids taking place to buckle or block up left ventricle pipe 1, influences the monitoring of pressure and the injection requirement of contrast medium. In order to ensure the smoothness of the outer wall of the whole monitoring device and ensure that the detection device is punctured and intervened in the blood vessel smoothly in the puncturing and withdrawing process. The end of the first pressure tap 31 is in smooth transition with the outer wall of the left ventricular catheter 1.

In order to further improve the requirement of smooth transition, the opening of the first pressure measuring hole 31 is in a crescent structure, so that more smooth transition supporting surfaces are added, and the possibility of scratching the blood vessel of the patient is reduced.

In order to avoid the injury of the left ventricle catheter 1 to the left ventricle in the left ventricle, especially the interference between the left ventricle catheter and human tissue easily occurs in the straightened state, and the monitoring of the pressure is influenced. The end part of the left ventricle catheter 1 exceeds the first pressure measuring hole 31 to form a bending section, the exceeding section 11 of the bending section is of an arc-shaped structure, and the arc angle of the arc-shaped structure is larger than 270 degrees. Namely: whole crooked section is similar winding column structure, reduces occupation space, can avoid human tissue's interference pressure monitoring through the effect between the pipeline again.

Since the second pressure tap 32 is at the forefront of the entire puncture procedure, the possibility of scratching the blood vessel of the interventional procedure is the greatest. Therefore, the end of the second pressure measuring hole 32 is designed to be in a closed structure, and the scratch to the blood vessel is reduced to the maximum extent under the condition that the requirements of pressure monitoring and contrast agent injection are not influenced. Because there is certain alternative between third pressure cell 32 and the second pressure cell 33, so further reduced the requirement to second pressure cell 32 structure size, further satisfied and for the structure design of its structure to the structure of closing in form, can satisfy the pressure monitoring requirement.

In order to ensure the accuracy of pressure monitoring and ensure that the injection pressure requirement can be met in the contrast agent injection process. The third pressure measuring holes 33 are symmetrically arranged on two sides of the left ventricle catheter 1, and the two third pressure measuring holes 33 are coaxially arranged and are beneficial to releasing pressure in the contrast medium injection process.

In order to further facilitate the injection of the contrast medium into the left ventricle, the axial directions of the two third pressure measurement holes 33 are perpendicular to the plane where the arc-shaped structure is located, so that the release of the contrast medium between the catheters is prevented from being blocked.

Preferably, the third pressure measuring hole 33 is arranged at a 270-degree position of the arc-shaped structure close to the end part of the left ventricular catheter 1 (namely, the third pressure measuring hole 33 is arranged at one end closest to the ascending aorta after the left ventricular catheter 1 is bent), so that the bent contrast agent can be filled in the valve position of the left ventricle, and the imaging requirement of a doctor is facilitated; furthermore, the human body tissues at the end of the left ventricle close to the ascending aorta are less, so that the possibility of blocking the third pressure measuring hole 33 is further avoided, and the accuracy of pressure monitoring is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A device for monitoring the pressure gradient between the left ventricle and the ascending aorta, comprising: a left ventricular catheter (1) and an ascending aorta catheter (2); the ascending aorta catheter (2) is embedded into the outer wall of the left ventricle catheter (1), a first pressure measuring hole (31) is formed in the end portion of the ascending aorta catheter (2), the end portion of the left ventricle catheter (1) exceeds the first pressure measuring hole (31), a second pressure measuring hole (32) is formed in the end portion of the left ventricle catheter (1), and a third pressure measuring hole (33) is formed in the side wall, close to the second pressure measuring hole (32), of the left ventricle catheter (1);

one side of the cross section of the left ventricular catheter (1) is of a concave structure, the ascending aorta catheter (2) is embedded into the concave structure, and the cross sections of the left ventricular catheter (1) and the ascending aorta catheter (2) are of a circular structure overall.

2. A device for monitoring the pressure jump between the left ventricle and the ascending aorta according to claim 1, characterized in that the diameter of the circular structure is 3 mm.

3. The device for monitoring the pressure step difference between the left ventricle and the ascending aorta according to claim 2, wherein the left ventricle catheter (1) and the ascending aorta catheter (2) are separated from each other at the tail end and are respectively connected with a pressure monitoring system, and the diameters of the separated sections of the left ventricle catheter (1) and the ascending aorta catheter (2) are respectively 2.5mm in the diameter of the left ventricle catheter (1) and 1.5mm in the diameter of the ascending aorta catheter (2).

4. Device for monitoring the pressure jump between the left ventricle and the ascending aorta according to claim 2, characterized in that the exceeding section (11) of the left ventricular catheter (1) beyond the first pressure tap (31) is 3mm in diameter.

5. Device for monitoring the pressure jump between the left ventricle and the ascending aorta according to claim 1, characterized in that the distance between the first pressure tap (31) and the third pressure tap (33) is 20 mm.

6. Device for monitoring the pressure jump between the left ventricle and the ascending aorta according to claim 1, characterized in that the excess section (11) of the end of the left ventricular catheter (1) beyond the first pressure tap (31) presents a circular arc configuration with an arc angle greater than 270 °.

7. Device for monitoring the pressure jump between the left ventricle and the ascending aorta according to claim 6, characterized in that the second pressure tap (32) ends in a closed-off configuration;

the third pressure measuring holes (33) are symmetrically formed in two sides of the left ventricular catheter (1), and the two third pressure measuring holes (33) are coaxially arranged;

the axial direction of the two third pressure measuring holes (33) is vertical to the plane of the arc-shaped structure.

8. Device for monitoring the pressure jump between the left ventricle and the ascending aorta according to claim 6, characterized in that the third pressure tap (33) is provided at 270 ° of the end of the circular arc shaped structure close to the left ventricular catheter (1).