Heart valve stent delivery device

Abstract

The utility model provides a heart valve stent delivery device which comprises a shell, a first connecting piece, a second connecting piece, a first connecting piece and a second connecting piece. The conveying part is connected with the shell, and the conveying part is wrapped with a valve support; the first sliding part is arranged in the first accommodating cavity in a sliding manner, the first accommodating cavity is divided into a first cavity and a second cavity by the first sliding part, and the first cavity and the second cavity are mutually isolated and sealed; the connecting part is arranged on the shell, and the connecting part is provided with a connecting channel; the second sliding part is arranged outside the valve stent in a sliding manner; the linkage piece is arranged in the connecting channel, and the linkage piece is connected with the first sliding part and the second sliding part; the linkage piece is driven through sliding of the first sliding part, and then the second sliding part is driven to enter the connecting channel and be separated from the valve support. The release efficiency of the heart valve stent is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a heart valve stent delivery device. Background Art

[0002] With the development of medicine and science and technology, different advanced equipment is applied in daily medical activities. Heart valve disease refers to heart damage caused by abnormal anatomy or function of heart valves, among which valve damage caused by rheumatic fever is more common. Heart valves refer to the valves between the atria and ventricles, and between the ventricles and arteries. Heart valves mainly include mitral valves, tricuspid valves, aortic valves and pulmonary valves. The function of the valve is to prevent blood from flowing back. If there is a problem with the valve, such as valvular insufficiency and valvular stenosis, it will generally cause the patient to have an enlarged heart, cause heart failure and coronary heart disease. Patients generally experience symptoms such as palpitations, fatigue, shortness of breath, significantly reduced activity endurance and exertional dyspnea after activities. Patients with heart valve disease are generally better off with stents. This surgical method has a smaller incision and less harm to the human body. The use of interventional stents can increase the success rate of the operation.

[0003] However, in current stent delivery devices, the delivery and release of stents are complicated and inconvenient, and their practicality is low. Utility Model Content

[0004] Therefore, an embodiment of the utility model provides a heart valve stent delivery device, which improves the release efficiency of the heart valve stent.

[0005] In order to solve the above problems, the utility model provides a heart valve stent delivery device, which includes: a shell, the shell is provided with a first accommodating chamber; a conveying part, the conveying part is connected to the shell, and the valve stent is wrapped on the conveying part; a first sliding part, the first sliding part is slidably arranged in the first accommodating chamber, and the first sliding part divides the first accommodating chamber into a first chamber and a second chamber, and the first chamber and the second chamber are isolated and sealed from each other; a connecting part, the connecting part is arranged in the shell, and the connecting part is provided with a connecting channel; a second sliding part, the second sliding part is slidably arranged outside the valve stent; a linkage part, the linkage part is arranged in the connecting channel, and the linkage part connects the first sliding part and the second sliding part; wherein, the sliding of the first sliding part drives the linkage part, and then drives the second sliding part to enter the connecting channel and detach from the valve stent.

[0006] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by arranging a valve stent wrapped on the conveying part, and by arranging the first sliding part in the first accommodating cavity, and by arranging corresponding connected connecting parts and the second sliding part, the linkage of the linkage parts makes it possible to drive the second sliding part to move by means of the sliding of the first sliding part, thereby exposing the valve stent originally hidden under the second sliding part, thereby releasing the valve stent where it is needed. Through this arrangement, the heart valve stent will not be released prematurely during the delivery process, thereby causing accidents. Moreover, the protection and sliding connection structure is simpler and more convenient to operate, and the probability of problems is also small. Not only the efficiency of conveying and releasing the heart valve stent is improved, but also the stability and safety of the entire delivery device are improved, which can better serve and operate for patients.

[0007] In one example of the utility model, the release part is arranged at one end of the first cavity close to the connection part; the extraction part is arranged at one end of the second cavity away from the connection part; wherein the second cavity is filled with physiological saline.

[0008] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by setting the release part in the first cavity and the extraction part in the second cavity, and filling the second cavity with physiological saline at the same time, when it is necessary to detach the second sliding part and the heart valve stent, it is only necessary to extract the physiological saline in the second cavity and then release it into the first cavity, and then the first sliding part can be pushed by pressure to realize the sliding of the first sliding part in the first accommodating cavity, and then the sliding of the second sliding part can be driven to realize detachment. Through this arrangement, the release of the valve stent is simpler and more convenient, and the release efficiency is higher.

[0009] In an example of the present invention, the linkage member and the first sliding portion are detachably connected.

[0010] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by arranging the linkage part and the first sliding part to be detachable, the linkage part and the first sliding part can be replaced separately, which can also provide convenience for subsequent repair and maintenance. They can also be disassembled separately for disinfection, making the disinfection more thorough, thereby making the device more hygienic and ensuring the safety of use.

[0011] In an example of the utility model, a matching portion is provided on one side of the first sliding portion close to the linkage member; the linkage member and the matching portion are plugged into each other, so that the first sliding portion and the linkage member are connected and fixed.

[0012] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: a mating portion is provided on the side of the first sliding portion close to the linkage member, and the linkage member and the mating portion are plugged in. Through the plug-in method, the connection between the linkage member and the mating portion is simpler. At the same time, the connection strength between the two can be guaranteed to a certain extent through a simple structure, thereby making the efficiency during use higher, thereby ensuring the practicality of the overall device.

[0013] In an example of the present invention, the second sliding portion and the connecting portion are detachably connected.

[0014] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by setting the connection part and the second sliding part to be detachable, the connection part and the second sliding part can be replaced separately, which can also provide convenience for subsequent repair and maintenance, and can be disassembled separately for disinfection, making the disinfection more thorough, thereby making the device more hygienic and ensuring the safety of use. At the same time, it can also be replaced according to the needs of different use environments, making the application scenarios more extensive and improving the practicality and compatibility of the device.

[0015] In one embodiment of the present invention, the inner wall of the connecting channel and the outer surface of the linkage member are tightly fitted.

[0016] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by setting the inner wall of the connecting channel and the outer surface of the linkage part to fit closely, the physiological saline in the first cavity will not leak out when the linkage part slides in the connecting channel. At the same time, it can also ensure that the linkage part is protected inside and will not be corroded by the outside, thereby extending the service life of the linkage part and ensuring the overall practicality and durability of the device.

[0017] In one example of the utility model, a first groove is provided at one end of the conveying part away from the connecting part; a second groove is provided at one end of the second sliding part close to the first groove, and the first groove and the second groove are arranged correspondingly to form a second accommodating cavity; a sealing member is arranged in the second accommodating cavity.

[0018] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by arranging the first groove and the second groove in correspondence with each other and arranging a seal in the formed second accommodating cavity, the delivery part will not allow external liquid to enter the device when delivering the valve stent, thereby affecting the use of internal components. It can also ensure that the valve stent will not be affected by the outside and will be released in advance before reaching the designated place, thereby ensuring the safety of the patient and the normal progress of the operation.

[0019] In one embodiment of the present invention, the guide portion is arranged at one end of the conveying portion away from the connecting portion.

[0020] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by setting the guide part at one end of the delivery part, the guide part can make the delivery part move more smoothly after entering the patient's body, thereby reducing damage to the patient's body, and ensuring that the delivery part can reach the designated place better and faster to release the valve stent, thereby better ensuring the safety of the patient and the normal progress of the operation, and improving the delivery efficiency and the overall practicality of the delivery device.

[0021] In an example of the present invention, the guide portion includes: two guide end surfaces, and the two guide end surfaces are inclined in a direction approaching each other.

[0022] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by setting the two guide end faces to be inclined in the direction of approaching each other, the two guide end faces can form corresponding guide angles, so that the front end of the guide part can enter the human body more smoothly, so that the delivery part can more smoothly deliver the valve stent to the designated place for release, thereby ensuring the normal progress of the operation and the efficiency of delivery.

[0023] After adopting the technical solution of the utility model, the following technical effects can be achieved:

[0024] (1) By providing a valve stent wrapped on the delivery part, and by providing a first sliding part in the first accommodating cavity, and providing a correspondingly connected connection part and a second sliding part, the linkage of the linkage member enables the sliding of the first sliding part to drive the second sliding part to move, thereby exposing the valve stent originally hidden under the second sliding part, thereby releasing the valve stent where it is needed. Through this arrangement, the heart valve stent will not be released prematurely during the delivery process, thereby causing an accident. In addition, the protection and sliding connection structure is simpler and more convenient to operate, and the probability of problems is also small, which not only improves the efficiency of the delivery and release of the heart valve stent, but also improves the stability and safety of the entire delivery device, and can better serve and operate for patients;

[0025] (2) By arranging the release part in the first cavity and the extraction part in the second cavity, and filling the second cavity with saline, when the second sliding part and the heart valve stent need to be separated, it is only necessary to extract the saline in the second cavity and release it into the first cavity, and then the first sliding part can be pushed by pressure to achieve the sliding of the first sliding part in the first accommodating cavity, and then the sliding of the second sliding part can be driven to achieve separation. Through this arrangement, the release of the valve stent is simpler and more convenient, and the release efficiency is higher;

[0026] (3) By arranging the first groove and the second groove in correspondence, and at the same time arranging a seal in the formed second accommodating cavity, the delivery part will not allow external liquid to enter the device when delivering the valve stent, thereby affecting the use of internal components. It can also ensure that the valve stent will not be affected by the outside and will be released in advance before reaching the designated place, thereby ensuring the safety of the patient and the normal progress of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is one of the structural schematic diagrams of a heart valve stent delivery device provided in an embodiment of the utility model.

[0029] Figure 2 The second structural schematic diagram of a heart valve stent delivery device provided in an embodiment of the utility model.

[0030] Figure 3 for Figure 2 Cross-sectional view along the BB direction.

[0031] Figure 4 for Figure 3 Magnified view of area A.

[0032] Figure 5 for Figure 3 Magnified view of area C.

[0033] Description of reference numerals:

[0034] 100. A heart valve stent delivery device; 110. A housing; 111. A first accommodating cavity; 112. A first cavity; 113. A second cavity; 120. A conveying portion; 130. A first sliding portion; 131. A matching portion; 140. A connecting portion; 150. A second sliding portion; 160. A linkage member; 170. A first groove; 180. A second groove; 190. A sealing member; 200. A guide portion; 210. A guide end face. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] [First embodiment]

[0037] See also Figure 1-Figure 5 The utility model provides a heart valve stent delivery device 100, which includes: a housing 110, the housing 110 is provided with a first accommodating cavity 111; a delivery portion 120, the delivery portion 120 is connected to the housing 110, and the delivery portion 120 is wrapped with a valve stent; a first sliding portion 130, the first sliding portion 130 is slidably arranged in the first accommodating cavity 111, and the first sliding portion 130 divides the first accommodating cavity 111 into a first cavity 112 and a second cavity 113, the first cavity 112 and the second cavity 113 are respectively provided. 13 are isolated and sealed from each other; a connecting part 140, the connecting part 140 is arranged on the shell 110, and the connecting part 140 is provided with a connecting channel; a second sliding part 150, the second sliding part 150 is slidably arranged outside the valve support; a linkage part 160, the linkage part 160 is arranged in the connecting channel, and the linkage part 160 connects the first sliding part 130 and the second sliding part 150; wherein, through the sliding of the first sliding part 130, the linkage part 160 is driven, and then the second sliding part 150 is driven to enter the connecting channel and detach from the valve support.

[0038] Specifically, when it is installed and used, the second cavity 113 is first filled with saline, wherein the release part and the extraction part are both arranged in the housing 110, and the extraction power can be a small pump, and the power supply device is also arranged inside the housing 110, or connected to an external power supply. At the same time, the first sliding part 130 is slidably arranged in the first accommodating cavity 111, and the first sliding part 130 and the inner wall of the first accommodating cavity 111 are tightly fitted, so that the first cavity 112 and the second cavity 113 are both independent cavities, so that the saline will not flow into each other when injected.

[0039] Furthermore, a linkage member 160 is connected to the first sliding portion 130, and the linkage member 160 is connected to the second sliding portion 150 through a connecting channel in the connecting portion 140. The second sliding portion 150 can be specifically a sleeve, which is sleeved on the outside of the conveying portion 120. At the same time, there is an installation portion between the conveying portion 120 and the guide portion 200, and the installation portion is used to install the valve stent. The installation and fixing method of the valve stent can be plug-in or snap-fit.

[0040] Furthermore, after the valve stent is fixed, physiological saline is injected into the second cavity 113, thereby pushing the first sliding part 130, and then driving the linkage part 160 to push the second sliding part 150 to move toward the guide part 200, so that the second sliding part 150 completely covers the valve stent and seals the installation part at the same time. After sealing, filling liquid is injected into the formed sealed space to ensure the stability of the valve stent.

[0041] Furthermore, after the delivery portion 120 is delivered to the designated position through surgery, the physiological saline in the second chamber 113 is extracted and released into the first chamber 112, so that the first sliding portion 130 is moved toward the side away from the guide portion 200 by means of pressure and thrust, thereby driving the second sliding portion 150 to move and disengage, so that the valve stent is exposed at the designated position, and then the installation is completed by releasing it by means of the characteristics of the valve stent, and then the heart valve stent delivery device 100 can be pulled out.

[0042] Preferably, a valve stent is wrapped on the conveying portion 120, and a first sliding portion 130 is arranged in the first accommodating cavity 111, and correspondingly connected connecting portions 140 and second sliding portions 150 are arranged, so that through the linkage of the linkage member 160, the sliding of the first sliding portion 130 drives the second sliding portion 150 to move, thereby exposing the valve stent originally hidden under the second sliding portion 150, thereby releasing the valve stent where it is needed. Through this arrangement, the heart valve stent will not be released prematurely during the delivery process, thereby preventing accidents from occurring. Moreover, the protection and sliding connection structure is simpler and more convenient to operate, and the probability of problems occurring is also small, which not only improves the efficiency of conveying and releasing the heart valve stent, but also improves the stability and safety of the entire delivery device, and can better serve and operate for patients.

[0043] Specifically, the release part is arranged at one end of the first cavity 112 close to the connection part 140; the extraction part is arranged at one end of the second cavity 113 away from the connection part 140; wherein the second cavity 113 is filled with physiological saline.

[0044] Preferably, a release portion is provided in the first cavity 112, an extraction portion is provided in the second cavity 113, and physiological saline is filled in the second cavity 113 at the same time, and when it is necessary to detach the second sliding portion 150 from the heart valve stent, it is only necessary to extract the physiological saline in the second cavity 113 and release it into the first cavity 112, and then the first sliding portion 130 can be pushed by pressure, so that the first sliding portion 130 can slide in the first accommodating cavity 111, and then the second sliding portion 150 can be driven to slide, and detachment can be achieved. Through this arrangement, the release of the valve stent is simpler, more convenient, and the release efficiency is higher.

[0045] Specifically, the linkage member 160 and the first sliding portion 130 are detachably connected.

[0046] Preferably, by arranging the linkage 160 and the first sliding part 130 to be detachable, the linkage 160 and the first sliding part 130 can be replaced separately, which can also provide convenience for subsequent repair and maintenance. They can also be disassembled separately for disinfection, making the disinfection more thorough, thereby making the device more hygienic and ensuring safety in use.

[0047] Specifically, a matching portion 131 is provided on one side of the first sliding portion 130 close to the linkage member 160 ; the linkage member 160 and the matching portion 131 are plugged into each other, so that the first sliding portion 130 and the linkage member 160 are connected and fixed.

[0048] Preferably, a mating portion 131 is provided on one side of the first sliding portion 130 close to the linkage member 160, and the linkage member 160 and the mating portion 131 are plugged together. The plug-in connection makes the connection between the linkage member 160 and the mating portion 131 simpler, and the connection strength between the two can be guaranteed to a certain extent through the simple structure, thereby making the efficiency during use higher, thereby ensuring the practicality of the overall device.

[0049] Specifically, the second sliding portion 150 and the connecting portion 140 are detachably connected.

[0050] Preferably, the connection part 140 and the second sliding part 150 are detachable, so that the connection part 140 and the second sliding part 150 can be replaced separately, which can also provide convenience for subsequent repair and maintenance, and can be disassembled separately for disinfection, so that the disinfection is more thorough, thereby making the device more hygienic and ensuring the safety of use. At the same time, it can be replaced according to different use environments, so that there are more application scenarios, and the practicality and compatibility of the device are improved.

[0051] Specifically, the inner wall of the connecting channel and the outer surface of the linkage member 160 are tightly fitted.

[0052] Preferably, by setting the inner wall of the connecting channel and the outer surface of the linkage member 160 to fit tightly, the physiological saline in the first cavity 112 will not leak out when the linkage member 160 slides in the connecting channel. At the same time, it can also ensure that the linkage member 160 is protected inside and will not be corroded by the outside, thereby extending the service life of the linkage member 160 and ensuring the overall practicality and durability of the device.

[0053] Specifically, a first groove 170 is provided at one end of the conveying portion 120 away from the connecting portion 140; a second groove 180 is provided at one end of the second sliding portion 150 close to the first groove 170, and the first groove 170 and the second groove 180 are arranged correspondingly to form a second accommodating cavity; a sealing member 190 is arranged in the second accommodating cavity.

[0054] Preferably, by arranging the first groove 170 and the second groove 180 in correspondence and arranging a seal 190 in the formed second accommodating cavity, the delivery portion 120 will not allow external liquid to enter the interior of the device when delivering the valve stent, thereby affecting the use of internal components. It can also ensure that the valve stent will not be affected by the outside and released in advance before reaching the designated place, thereby ensuring the safety of the patient and the normal progress of the operation.

[0055] Specifically, the guide portion 200 is disposed at one end of the conveying portion 120 away from the connecting portion 140 .

[0056] Preferably, by arranging the guide portion 200 at one end of the delivery portion 120, the delivery portion 120 can move more smoothly after entering the patient's body through the guide portion 200, thereby reducing damage to the patient's body, and can also ensure that the delivery portion 120 can reach the designated place better and faster to release the valve stent, thereby better ensuring the safety of the patient and the normal progress of the operation, and improving the delivery efficiency and the overall practicality of the delivery device.

[0057] Specifically, the guide portion 200 includes two guide end surfaces 210 , and the two guide end surfaces 210 are inclined toward a direction approaching each other.

[0058] Preferably, by setting the two guide end faces 210 to be inclined in a direction approaching each other, the two guide end faces 210 can form corresponding guide angles, so that the front end of the guide part 200 can enter the human body more smoothly, so that the delivery part 120 can more smoothly deliver the valve stent to the designated place for release, thereby ensuring the normal progress of the operation and the efficiency of delivery.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A heart valve stent delivery device, characterized in that: The heart valve stent delivery device comprises: A housing (110), wherein the housing (110) is provided with a first accommodating chamber (111); A conveying portion (120), the conveying portion (120) being connected to the housing (110), and the conveying portion (120) being wrapped with a valve stent; a first sliding portion (130), the first sliding portion (130) being slidably disposed in the first accommodating chamber (111), and the first sliding portion (130) dividing the first accommodating chamber (111) into a first chamber (112) and a second chamber (113), and the first chamber (112) and the second chamber (113) are isolated and sealed from each other; A connecting portion (140), the connecting portion (140) being disposed on the housing (110), and the connecting portion (140) being provided with a connecting channel; A second sliding portion (150), the second sliding portion (150) being slidably disposed outside the valve support; A linkage member (160), wherein the linkage member (160) is disposed in the connecting channel, and the linkage member (160) connects the first sliding portion (130) and the second sliding portion (150); The sliding of the first sliding part (130) drives the linkage part (160), thereby driving the second sliding part (150) to enter the connecting channel and detach from the valve support.

2. The heart valve stent delivery device according to claim 1, characterized in that: a release portion, the release portion being arranged at one end of the first cavity (112) close to the connection portion (140); an extraction portion, the extraction portion being arranged at an end of the second cavity (113) away from the connecting portion (140); Wherein, the second cavity (113) is filled with physiological saline.

3. The heart valve stent delivery device according to claim 1, characterized in that: The linkage member (160) and the first sliding portion (130) are detachably connected.

4. The heart valve stent delivery device according to claim 3, characterized in that: Also includes: A matching portion (131) is provided on one side of the first sliding portion (130) close to the linkage member (160); The linkage member (160) and the matching portion (131) are plugged into each other, so that the first sliding portion (130) and the linkage member (160) are connected and fixed.

5. The heart valve stent delivery device according to claim 1, characterized in that: The second sliding portion (150) and the connecting portion (140) are detachably connected.

6. The heart valve stent delivery device according to claim 1, characterized in that: The inner wall of the connecting channel and the outer surface of the linkage member (160) are tightly fitted.

7. The heart valve stent delivery device according to claim 1, characterized in that: A first groove (170) is provided at one end of the conveying portion (120) away from the connecting portion (140); A second groove (180) is provided at one end of the second sliding portion (150) close to the first groove (170), and the first groove (170) and the second groove (180) are arranged correspondingly to form a second accommodating cavity; A sealing member (190), wherein the sealing member (190) is arranged in the second accommodating cavity.

8. The heart valve stent delivery device according to claim 1, characterized in that: Also includes: A guide portion (200), wherein the guide portion (200) is arranged at an end of the conveying portion (120) away from the connecting portion (140).

9. The heart valve stent delivery device according to claim 8, characterized in that: The guide portion (200) comprises: Two guide end surfaces (210), wherein the two guide end surfaces (210) are arranged to be inclined in a direction approaching each other.

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