CN221331566U - Detection device for minimally invasive mitral valve repair - Google Patents

Abstract

The utility model provides a detection device for a minimally invasive mitral valve prosthesis, which comprises a catheter, a water injection container and an aspirator, wherein the catheter comprises a three-way switch, a water inlet pipe, a water outlet pipe and an aspirator, wherein the water inlet pipe, the water outlet pipe and the aspirator are connected with the three-way switch, and the three-way switch is used for controlling the communication of flow passages among the water inlet pipe, the water outlet pipe and the aspirator; the water injection container is communicated with the water inlet pipe through a first pipeline; the aspirator is in communication with the aspiration tube through a second conduit. The three-way switch is used for controlling the communication of the water inlet pipe, the water outlet pipe and the suction pipe, so that the free switching of the guide pipe between the water injection function and the suction function is realized, and the trouble of replacing the instrument is eliminated.

Description

Detection device for minimally invasive mitral valve repair

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a detection device for minimally invasive mitral valve repair.

Background

Mitral valve repair is the dominant technique for treating mitral regurgitation, and in mitral valve repair, it is often necessary to check whether the valve closes well by a water injection test, and the detection principle is that the valve closes well after repair by a pressure test.

Conventional devices for heart valve waterflooding tests include catheters and syringes. The tail end of the catheter is connected with the injector, the head end of the catheter is inserted into the left ventricle through the mitral valve orifice, sterile physiological saline is injected into the left ventricle through the injector and the catheter, and after filling the ventricle, the reflux condition of the heart valve is observed, so that the valve repairing effect is judged. The method has the problems that the volume of the injector is too small, the ventricle can be filled only by repeated water absorption and injection, the operation is complex, the efficiency is low, the water injection pipe only has the water injection function, the aspirator needs to be replaced to suck out residual liquid, and the operation steps of operators are redundant and complex.

Disclosure of utility model

Based on this, the present utility model aims to provide a detection device for minimally invasive mitral valve repair, so as to solve the technical problems in the background art.

The utility model proposes a detection device for minimally invasive mitral valve repair, comprising:

The guide pipe comprises a three-way switch, a water inlet pipe, a water outlet pipe and a suction pipe, wherein the water inlet pipe, the water outlet pipe and the suction pipe are connected with the three-way switch, and the three-way switch is used for controlling the communication of flow passages among the water inlet pipe, the water outlet pipe and the suction pipe;

The water injection container is communicated with the water inlet pipe through a first pipeline, and when the three-way switch is only communicated with the flow passage between the water inlet pipe and the water outlet pipe, liquid in the water injection container is injected into the left ventricle of the heart through the first pipeline, the water inlet pipe, the three-way switch and the water outlet pipe in sequence;

The aspirator is communicated with the suction pipe through a second pipeline, and when the three-way switch is only communicated with the flow passage between the water outlet pipe and the suction pipe, liquid in the left heart chamber of the heart is sucked into the aspirator through the water outlet pipe, the three-way switch, the suction pipe and the second pipeline in sequence.

Further, the detection device for the minimally invasive mitral valve prosthesis comprises a valve body and a valve core, wherein 3 interfaces are arranged on the valve body, the water inlet pipe, the water outlet pipe and the suction pipe are arranged on the valve body through the interfaces, the valve core is rotationally arranged in the valve body, a first flow channel, a second flow channel and a third flow channel which are communicated are arranged on the valve core, and the first flow channel, the second flow channel and the third flow channel are respectively arranged corresponding to the 3 interfaces on the valve body.

Further, the detection device for the minimally invasive mitral valve prosthesis, wherein the first flow channel and the second flow channel are coaxially arranged, and the third flow channel is perpendicular to between the first flow channel and the second flow channel.

Further, the detection device for the minimally invasive mitral valve prosthesis comprises a T-shaped runner, wherein the first runner, the second runner and the third runner 3 form the T-shaped runner.

Further, the detection device for the minimally invasive mitral valve prosthesis comprises a three-way switch, and the three-way switch further comprises a rotating handle connected with the valve core.

Further, the detection device for the minimally invasive mitral valve prosthesis comprises a guide tube arranged at the tail end of the water outlet tube, and an obtuse angle is formed between the guide tube and the water outlet tube.

Further, the detection device for the minimally invasive mitral valve prosthesis comprises an arc chamfer at the end of the guide tube.

Further, the detection device for the minimally invasive mitral valve prosthesis comprises a plurality of openings formed in the axial side wall of the guide tube.

Further, the detection device for the minimally invasive mitral valve prosthesis comprises a water injection container and a manual air pump connected with the water injection container.

Further, the detection device for the minimally invasive mitral valve prosthesis comprises a catheter made of a metal material.

Compared with the prior art, the utility model has the beneficial effects that:

1. The pressurizing bag is used as a container for storing the normal saline, compared with the scheme of using the injector in the traditional scheme, the volume of the pressurizing bag is larger, the normal saline can be filled into the left ventricle at one time in operation, and the burden of refilling water is reduced.

2. The three-way switch is used for controlling the communication of the water inlet pipe, the water outlet pipe and the suction pipe, so that the free switching of the guide pipe between the water injection function and the suction function is realized, and the trouble of replacing the instrument is eliminated.

Drawings

FIG. 1 is a perspective view of a detection device for use in a minimally invasive mitral valve repair of the present utility model;

FIG. 2 is a perspective view of a catheter according to the present utility model;

FIG. 3 is a schematic view of the internal structure of the three-way switch with the catheter in the closed state;

FIG. 4 is a schematic diagram of the internal structure of the three-way switch in the water filling state of the catheter according to the present utility model;

FIG. 5 is a schematic view showing the internal structure of the three-way switch in the suction function state of the catheter according to the present utility model;

FIG. 6 is a front view of a catheter in accordance with the present utility model;

Description of main reference numerals:

100. A conduit; 10. a three-way switch; 11. a water inlet pipe; 12. a water outlet pipe; 121. a rear end portion; 122. a front end portion; 123. a guide tube; 13. a suction tube; 200. a water injection container; 21. a pressurized bag; 22. a manual air pump; 41. a first pipeline; 300. an aspirator; 42. a second pipeline; 101. a valve body; 102. a valve core; 103. a first flow passage; 104. a second flow passage; 105. a third flow passage; 50. rotating the handle; 60. a thread-like connection structure; 61. arc chamfering; 62. and (5) opening holes.

The utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, the detection device for minimally invasive mitral valve repair of the present utility model includes a catheter 100, a water injection vessel 200, and an aspirator 300.

The guide pipe 100 comprises a three-way switch 10, a water inlet pipe 11, a water outlet pipe 12 and a suction pipe 13 which are connected with the three-way switch 10, wherein the three-way switch 10 is used for controlling the communication of flow passages among the water inlet pipe 11, the water outlet pipe 12 and the suction pipe 13, and the free switching between a water injection function and a suction function is realized by controlling the communication among different flow passages, so that the trouble of replacing the apparatus is omitted.

The above water injection container 200 is communicated with the water inlet pipe 11 through the first pipeline 41, and when the three-way switch 10 is only communicated with the flow passage between the water inlet pipe 11 and the water outlet pipe 12, the liquid in the water injection container 200 is injected into the left ventricle of the heart through the first pipeline 41, the water inlet pipe 11, the three-way switch 10 and the water outlet pipe 12 in sequence, so as to perform a water injection test, and evaluate the mitral valve repair effect and the valve function.

The procedure for the water injection test was as follows:

1. In performing mitral valve repair procedures, a physician temporarily replaces heart function with a heart-lung mechanical assist device (typically an extracorporeal circulation device) to enable the heart to be stopped and dissected.

2. After opening the heart, the physician may inject saline through the mitral valve orifice under direct vision into the left ventricle of the patient's heart through the imbedded catheter 100.

3. The injected saline increases the filling of the heart, simulating the hyperemic state of the heart, so that the physician can observe and assess whether the repaired mitral valve is fully closed under load and check for valve regurgitation.

4. The water filling test is usually repeated several times, and the result can be obtained by looking directly at the test, and the doctor can detect the closing condition, reflux degree and coordination with surrounding tissues of the valve.

The aspirator 300 is connected to the aspiration tube 13 through the second pipe 42, and when the three-way switch 10 is connected to only the flow path between the water outlet tube 12 and the aspiration tube 13, the liquid in the left ventricle of the heart is inhaled into the aspirator 300 through the water outlet tube 12, the three-way switch 10, the aspiration tube 13 and the second pipe 42 in sequence.

Through the water injection test, a doctor can judge the effect after the mitral valve repair operation and make necessary adjustment. If the mitral valve is fully closed and there is no regurgitation and the valve is functioning properly, this indicates that the prosthesis was successful. If the mitral valve is not fully closed or regurgitation still exists, the physician may need to further adjust the repair method, or consider other treatment options, such as valve replacement.

It should be noted that, in this embodiment, the aspirator 300 is a negative pressure suction device, which can generate a stable negative pressure environment to draw out the residual liquid in the left ventricle through the catheter 100. Therefore, a doctor can control the communication between different channels through the three-way switch 10, so that the catheter 100 can be freely switched between the water injection function and the suction function, and the trouble of replacing the instrument is avoided.

Specifically, as shown in fig. 3 to 5, the three-way switch 10 includes a valve body 101 and a valve core 102, 3 ports are provided on the valve body 101, the water inlet pipe 11, the water outlet pipe 12 and the suction pipe 13 are provided on the valve body 101 through the ports, the valve core 102 is rotatably provided in the valve body 101, and a first flow passage 103, a second flow passage 104 and a third flow passage 105 which are mutually communicated are provided on the valve core 102, and the first flow passage 103, the second flow passage 104 and the third flow passage 105 are respectively provided corresponding to the 3 ports on the valve body 101. It will be appreciated that by rotating the valve core 102, the flow passage provided on the valve core 102 is aligned with or offset from the interface portion provided on the valve body 101, thereby effecting control of the direction of fluid flow within the conduit 100.

Further, the first flow channel 103 and the second flow channel 104 are coaxially arranged, the third flow channel 105 is perpendicular to the space between the first flow channel 103 and the second flow channel 104, 3 flow channels form a T-shaped flow channel, the water inlet pipe 11 and the water outlet pipe 12 connected to the valve body 101 are coaxially arranged opposite to each other, and the suction pipe 13 is connected to the valve body 101 and is arranged perpendicular to the axis of the water inlet pipe 11 and the water outlet pipe 12.

The following are three different states of the catheter 100 in this embodiment:

As shown in fig. 3, none of the first, second and third flow passages 103, 104, 105 of the valve body 102 are aligned with the ports on the valve body 101, and the conduit 100 is in a closed state.

As shown in fig. 4, the first flow passage 103 of the valve core 102 is connected to the water inlet pipe 11, the second flow passage 104 is connected to the water outlet pipe 12, and the third flow passage 105 is not connected to the suction pipe 13, and at this time, the pipe 100 is in a water filling function state.

As shown in fig. 5, the second flow passage 104 of the valve body 102 is connected to the suction pipe 13, the third flow passage 105 is connected to the water outlet pipe 12, and the first flow passage 103 is not connected to the water inlet pipe 11, and at this time, the pipe 100 is in a suction function state.

Further, as shown in fig. 2, the three-way switch 10 further includes a rotary handle 50 connected to the valve core 102, where the rotary handle 50 is used to adjust the rotation angle of the valve core 102, so as to control the function of the catheter 100. In addition, graduation marks corresponding to 3 different functions of sealing, water injection and suction of the catheter 100 are arranged on the outer surface of the valve body 101 so as to indicate the current functional state of the catheter 100 of the medical staff.

Further, referring to fig. 6, a guiding pipe 123 is disposed at the end of the water outlet pipe 12, an obtuse angle is formed between the guiding pipe 123 and the water outlet pipe 12, and an arc chamfer 61 is disposed at the end of the guiding pipe 123. It will be appreciated that the particular angular design of the forward end of the outlet tube 12 facilitates accurate intraoperative manipulation and its blunt tip is intended to reduce damage to heart tissue.

With continued reference to fig. 6, the axial side wall of the guide tube 123 is provided with a plurality of openings 62, and the plurality of openings 62 are designed to disperse water when water is injected into the left ventricle, so as to disperse flow and uniformly inject water, which can reduce the impact and pressure of water flow to a specific area and avoid excessive pressure load to the tissue of the left ventricle. Second, the plurality of apertures 62 reduce resistance to water flow through the outlet pipe 12, which helps to increase the efficiency of water injection.

Specifically, the water injection container 200 includes a pressurizing bag 21 and a manual air pump 22 connected to the pressurizing bag 21. The volume of the pressurizing bag 21 can be customized, so that a large amount of physiological saline can be stored, the left ventricle can be filled at one time during operation, the burden of refilling water is reduced, and secondly, the pressurizing bag 21 can ensure the smoothness of the flushing process, and meanwhile, the manual air pump 22 can control the water speed by adjusting the pressure.

In addition, in clinical practice, we find that an important complication in the minimally invasive mitral valve repair operation performed at present is that the air is introduced into the left heart chamber due to the water injection test by using the water sac, so that the probability of opening the coronary artery air lock after the aorta is increased, and the complication of the postoperative nervous system of the patient is possibly increased, and the problem of air introduction into the left heart chamber can be effectively avoided by adopting the water injection of the pressurizing bag 21.

In this embodiment, the catheter 100 is made of a metal material. Compared with the structural design of the hose in the prior art, the hose is not easy to receive the reverse thrust after water injection and shake left and right, can be better used in minimally invasive surgery, has excellent durability and corrosion resistance, and can be reused after high-temperature sterilization.

In addition, in the present embodiment, the nozzles of the water inlet pipe 11 and the suction pipe 13 are threaded connection structures 60 with thin distal ends and thick proximal ends, which are respectively used for connecting the first pipeline 41 and the second pipeline 42, specifically, the threaded connection structures 60 have a distal outer diameter of 4mm and a proximal outer diameter of 8mm, when the threaded connection structures 60 are butted with the pipeline, the narrower distal ends facilitate the threaded connection structures 60 to be inserted into the pipeline, and the wider proximal ends are used for stopping against the inner wall of the pipeline so as to prevent the pipeline from falling, and referring to fig. 2.

In the embodiment, a water inlet pipe 11 is arranged behind the three-way switch 10, the length between the tail end of the thread and the three-way switch 10 is 27mm, and the diameter is 7mm; a suction tube 13 is arranged below the three-way switch 10, the length between the tail end of the thread and the three-way switch 10 is 6mm, and the diameter is 7mm; the front part is the water outlet pipe 12, and the water outlet pipe 12 is composed of a rear end part 121 with the diameter of 7mm and the length of 32mm and a front end part 122 with the diameter of 5mm and the length of 278mm, wherein an angle between the guide pipe 123 and the front end part 122 is 150 degrees, and the length is 50mm, and specifically, the water outlet pipe is shown in fig. 6.

The application method of the utility model comprises the following steps: before use, the sterile apparatus is unpacked to the table and the infusion bag is inserted into the sandwich of the pressurized bag 21 by the nurse and secured to the infusion support. The pressurized bag 21 is inflated to a suitable pressure. The sterile infusion line (first line 41) and aspiration line (second line 42) are unpacked to the operating table, one section is connected to the appropriate location of catheter 100 by the operator, the other end is thrown under the table, and the pressurizing bag 21 and aspirator 300 are connected by the nurse. The water injection pressure can be tested before use after connection is completed, and the water injection pressure can be used after proper adjustment. When the device is used, the guide pipe 123 at the end part of the water inlet pipe 11 extends into the left ventricle through the mitral valve orifice, at this time, the angle and the entering depth of the front elbow are noted, the water injection experiment is carried out after the three-way switch 10 is adjusted to the water injection function, and the mitral valve closing condition is observed. After the experiment is completed, the three-way switch 10 is adjusted to have a suction function to suck out the residual liquid in the left ventricle.

In summary, in the detection device for a minimally invasive mitral valve prosthesis according to the above embodiment of the present utility model, the three-way switch 10 controls the communication of the flow passages among the water inlet pipe 11, the water outlet pipe 12 and the suction pipe 13, so as to realize the free switching of the catheter 100 between the water injection function and the suction function, and save the trouble of replacing the apparatus. Secondly, the pressurizing bag 21 is adopted as a container for storing the physiological saline, compared with the scheme of using a syringe in the traditional scheme, the volume of the pressurizing bag 21 is larger, and the physiological saline can be filled into the left ventricle at one time in the operation, so that the burden of refilling water is reduced.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A detection device for use in a minimally invasive mitral valve prosthesis, comprising:

The guide pipe comprises a three-way switch, a water inlet pipe, a water outlet pipe and a suction pipe, wherein the water inlet pipe, the water outlet pipe and the suction pipe are connected with the three-way switch, and the three-way switch is used for controlling the communication of flow passages among the water inlet pipe, the water outlet pipe and the suction pipe;

The water injection container is communicated with the water inlet pipe through a first pipeline, and when the three-way switch is only communicated with the flow passage between the water inlet pipe and the water outlet pipe, liquid in the water injection container is injected into the left ventricle of the heart through the first pipeline, the water inlet pipe, the three-way switch and the water outlet pipe in sequence;

The aspirator is communicated with the suction pipe through a second pipeline, and when the three-way switch is only communicated with the flow passage between the water outlet pipe and the suction pipe, liquid in the left heart chamber of the heart is sucked into the aspirator through the water outlet pipe, the three-way switch, the suction pipe and the second pipeline in sequence.

2. The detection device for minimally invasive mitral valve repair of claim 1, wherein the three-way switch comprises a valve body and a valve core, 3 interfaces are arranged on the valve body, the water inlet pipe, the water outlet pipe and the suction pipe are arranged on the valve body through the interfaces, the valve core is rotatably arranged in the valve body, and a first flow channel, a second flow channel and a third flow channel which are communicated with each other are arranged on the valve core, and the first flow channel, the second flow channel and the third flow channel are respectively arranged corresponding to the 3 interfaces on the valve body.

3. The detection device for minimally invasive mitral valve repair of claim 2, wherein the first flow channel is coaxially disposed with the second flow channel and the third flow channel is perpendicular between the first flow channel and the second flow channel.

4. The device of claim 2, wherein the first, second and third flow channels 3 form a T-shaped flow channel.

5. The detection device for minimally invasive mitral valve repair of claim 2, wherein the three-way switch further comprises a rotating handle coupled to the valve cartridge.

6. The device for minimally invasive mitral valve repair of claim 1, wherein a guide tube is provided at a distal end of the outlet tube, the guide tube and the outlet tube forming an obtuse angle therebetween.

7. The detection device for minimally invasive mitral valve repair of claim 6, wherein an end of the guide tube is provided with an arcuate chamfer.

8. The device of claim 6, wherein the guide tube has a plurality of openings formed in an axial sidewall thereof.

9. The detection device for minimally invasive mitral valve repair of claim 1, wherein the water injection container comprises a pressurized bag and a manual air pump connected to the pressurized bag.

10. The detection device for minimally invasive mitral valve repair of claim 1, wherein the catheter is made of a metallic material.