Heart mitral valve forceps holder, medical catheter and interventional medical equipment
By designing a cardiac mitral valve clamp that includes a proximal and distal parts, the problem of leaflet detachment in the prior art is solved, and the release and indwelling of the clamp is realized, and the accuracy and safety of the surgery are improved.
Patent Information
- Application Number
- CN202421497790.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The prior art central mitral valve clamp device easily leads to leaflet loss when clamping the mitral valve leaflet, leading to surgical failure or serious adverse events.
A cardiac mitral valve clamp is designed, including a proximal and a distal member, connected to a delivery device of a medical catheter through a coupling mechanism, and the distal member is fixed around the target tissue to grasp and fix the target tissue to prevent the valve from slipping.
Through this design, the release and indwelling of the mitral valve clamp of the heart is achieved, which improves the accuracy and controllability of the surgical operation, ensures effective grasping and fixing of the target tissue, and improves the surgical treatment effect and safety.
Smart Images
Figure CN222917670U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and more particularly, to a cardiac mitral valve clip, a medical catheter, and an interventional medical device. Background Art
[0002] In a normal heart, during left ventricular systole, the closure of the mitral valve and the opening of the aortic valve ensure that blood flows into the ascending aorta and then perfuses all organs of the body. When the pressure in the left ventricle is higher than the pressure in the left atrium, the mitral valve is configured as a "check valve" to prevent blood reflux. Therefore, blood reflux or "regurgitation" through the mitral valve during cardiac systole is prevented. The mitral valve includes a pair of leaflets whose free edges close evenly. The opposite ends of the leaflets are connected to the surrounding cardiac structures, forming an annular region called the annulus. The free edges of the leaflets are fixed to the lower part of the left ventricle by a group of branched tendons called chordae tendineae. The chordae tendineae are in turn connected to papillary muscles that extend upward from the lower part of the left ventricle and the interventricular septum.
[0003] The free edges of the anterior and posterior leaflets of the mitral valve usually meet along the junction line. When the leaflets of the mitral valve fail to close properly, blood regurgitates from the ventricle into the atrium. Many structural defects in the heart can cause mitral regurgitation, such as cardiac dilation, chordae tendineae rupture, impaired papillary muscle function, tethering of infarcted myocardium, etc. Cardiac dilation causes the mitral annulus to enlarge, such that the two mitral leaflets cannot close during systole. Rupture of the chordae tendineae or impaired papillary muscle function can also lead to valve prolapse, preventing the two leaflets from apposing. Tethering of one of the mitral leaflets due to necrotic myocardium after myocardial infarction can also cause the two leaflets to fail to close. All these conditions can lead to mitral regurgitation. Especially in cases of massive regurgitation, acute massive mitral regurgitation immediately causes an increase in left atrial pressure and shortness of breath, leading to severe heart failure. Chronic massive mitral regurgitation also causes an increase in left atrial pressure and pulmonary artery pressure, which in turn causes heart failure and worsens the prognosis.
[0004] To address the problem of mitral regurgitation, many medical devices have emerged, such as Mitriclip, ValveClamp and other clips, Neochorde chordae tendineae repair, mitral valve replacement devices, etc. Currently, the most widely used is the mitral valve clip, which plays a certain role in improving quality of life and heart failure prognosis. However, these clamping devices all have a certain problem of leaflet detachment from the clamp, that is, the leaflets slip out of the clamp, and acute or chronic detachment both lead to surgical failure, which can be fatal or cause serious adverse events. Summary of the Invention
[0005] The present application aims to provide a cardiac mitral valve clip, a medical catheter, and an interventional medical device to solve the technical problem in the prior art that the mitral valve leaflets are prone to detachment from the clamp when the cardiac mitral valve clip clamps the mitral valve leaflets.
[0006] According to one aspect of the present application, a cardiac mitral valve clip applier is provided, comprising: a proximal member connected to a delivery device of a medical catheter through a coupling mechanism, wherein the coupling mechanism allows release and retention of the cardiac mitral valve clip applier; a distal member fixed around a target tissue of a target object to grasp and fix the target tissue. With the above structure, valve slippage from the clip applier can be prevented.
[0007] With the above structure, release and retention of the cardiac mitral valve clip applier are achieved, enabling a doctor to flexibly control the release and fixation of the cardiac mitral valve clip applier according to surgical needs, thereby improving the accuracy and controllability of surgical operations, facilitating effective grasping and fixation of the target tissue, and further enhancing the surgical treatment effect and safety.
[0008] In some embodiments, the coupling mechanism is a threaded connection, snap connection or magnetic connection structure to ensure the firmness and stability of the connection. With the above structure, the firmness and stability between the cardiac mitral valve clip applier and the delivery device are ensured, further enhancing the accuracy and reliability of surgical operations.
[0009] In some embodiments, a connecting component is included inside the distal member for connection with the coupling mechanism of the delivery device. With the above structure, a firm connection between the cardiac mitral valve clip applier and the delivery device can be ensured, providing stable support and transmission capabilities. The introduction of this connection structure enhances the reliability and stability of the device, enabling more precise control and positioning of the cardiac mitral valve clip applier during surgical operations, facilitating improvement of the surgical success rate and effect, reducing the risk of unexpected situations during the surgical process, and enhancing the safety and reliability of the surgery.
[0010] In some embodiments, the delivery device is made of a material that is soft but has a stiffness greater than a stiffness threshold. By adopting a material that is soft but has a stiffness greater than a specific threshold, with the above structure, the catheter has sufficient flexibility to adapt to complex cardiac anatomical structures and vascular channels, while having sufficient stiffness to provide stable guiding and control performance. Due to the characteristics of the material, the delivery device can maintain a stable shape during catheter operation, thereby ensuring the accuracy and controllability of surgical operations. This design not only helps reduce errors and accidents during surgical operations, but also improves the surgical success rate and efficiency, while reducing unnecessary harm to the patient, making interventional cardiac surgery safer, more reliable and effective.
[0011] In some embodiments, the front end of the delivery device is a guiding end, and the guiding section has a conical shape with a size smaller than a preset size threshold to penetrate blood vessels or narrow channels. With the above structure, the catheter can easily penetrate blood vessels or narrow channels. The conical shape of the guiding end can effectively reduce the cross-sectional area of the device, thereby reducing the resistance and friction in the narrow channel and minimizing the damage and trauma to the surrounding tissues during catheter penetration. This embodiment not only improves the maneuverability and penetrability of the catheter but also reduces the resistance and difficulties during the surgical operation, greatly enhancing the success rate and efficiency of catheter operation. At the same time, it reduces the discomfort and pain of the patient, making the interventional surgery safer, more comfortable, and smoother.
[0012] In some embodiments, the guiding end of the delivery device has length scales, metal markers, or fluorescent markers. With the above structure, it is more convenient and accurate to determine the position and direction of the catheter during the operation. The length scales can help the doctor accurately control and adjust the position of the catheter when guiding it, ensuring that the catheter reaches the predetermined target position. The metal markers or fluorescent markers can more clearly show the position and direction of the catheter in imaging examinations such as X-ray or fluorescence imaging, providing more accurate catheter guidance and positioning, thereby effectively reducing the occurrence of operation risks and complications and improving the safety and success rate of the surgery.
[0013] In some embodiments, a camera is provided on the front side of the guiding end for real-time acquisition of data inside the target object when the delivery device travels inside the target object. With the above structure, it is possible to acquire data inside the target object in real time, which enables the doctor to obtain accurate internal images and information during the operation, helping to guide the operation and timely adjust the treatment plan. By observing the internal situation in real time, the doctor can more precisely guide the delivery device to the target position, improving the accuracy and safety of the surgery. At the same time, it can also promptly detect and handle unexpected situations, reducing the surgical risk and ensuring the safety of the patient.
[0014] In some embodiments, the medical catheter further includes a sleeve for sleeving the camera, and the sleeve and the camera are filled and encapsulated with transparent glue so that the camera is covered by the transparent glue. With the above structure, it can be ensured that the camera is not affected by the external environment during use, such as contamination by blood or body fluids, and at the same time, it can protect the camera from damage or scratches, thus ensuring the clarity and accuracy of the internal image and improving the reliability and safety of the surgical operation.
[0015] According to another aspect of the present application, there is also provided a medical catheter, comprising: a catheter body; a delivery device disposed at one end of the catheter body for guiding a cardiac mitral valve clip to a target site of a target object; and the clip as described above, connected to the delivery device for grasping and fixing a target tissue at the target site.
[0016] With the above structure, the cardiac mitral valve clip is accurately guided to the target site, so as to reliably grasp and fix the target tissue of the heart, solving the technical problem of unstable fixation and improving the treatment effect and surgical safety.
[0017] According to still another aspect of the present application, there is also provided an interventional medical device, comprising the above-mentioned medical catheter and a display device. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings forming a part of this application are used to provide a further understanding of the application. The illustrative embodiments and descriptions thereof of the application are used to explain the application and do not constitute an improper limitation of the application. In the drawings:
[0019] Figure 1 It is a schematic diagram of the basic structure of the clip of a cardiac mitral valve clip of the present utility model.
[0020] Figure 2 It is an exploded view of the structure of a cardiac mitral valve clip of the present utility model.
[0021] Figure 3 It is a schematic diagram of the structure of the clip of a cardiac mitral valve clip of the present utility model in another state.
[0022] Figure 4 It is an exploded view of the structure of the clip and the mesh shell of a cardiac mitral valve clip of the present utility model.
[0023] Figure 5 It is a schematic diagram of the mating relationship between the clip and the mesh shell of a cardiac mitral valve clip of the present utility model.
[0024] Figure 6 It is a schematic diagram of the structure of a medical catheter of the present utility model.
[0025] Figure 7 It is a schematic diagram of the mating relationship between the lower clip and the upper clip of a cardiac mitral valve clip of the present utility model.
[0026] Figure 8 It is a cardiac mitral valve clip of the present utility model Figure 7 An enlarged view of part A therein.
[0027] Figure 9Schematic diagram of the structure of the upper clip and the lower clip of a cardiac mitral valve clip of the present utility model during expansion.
[0028] Figure 10 Schematic diagram of the structure of the upper clip of a cardiac mitral valve clip of the present utility model during contraction and the lower clip during expansion.
[0029] Figure 11 Schematic diagram of the structure of the upper clip and the lower clip of a cardiac mitral valve clip of the present utility model during contraction.
[0030] Figure 12 Schematic diagram of the cooperation between the second control line and the limit seat of a cardiac mitral valve clip of the present utility model.
[0031] Figure 13 Schematic diagram of the internal structure of the second nitinol rod of a cardiac mitral valve clip of the present utility model.
[0032] Figure 14 Cross-sectional view of the catheter of the present utility model extending into the heart.
[0033] Figure 15 Schematic diagram of the cardiac mitral valve of the present utility model.
[0034] Figure 16 Cross-sectional view of the heart after the clip is installed in the present utility model.
[0035] Figure 17 Schematic diagram of the cardiac mitral valve after the clip is installed in the present utility model.
[0036] In the figure: 101, limit seat; 102, installation groove; 103, limit groove; 104, fixing groove; 105, first reinforcing rib; 106, clamping groove; 201, lower clip; 202, first through hole; 203, second reinforcing rib; 204, limit buckle; 205, teeth; 301, upper clip; 302, barbs; 303, second through hole; 401, mesh shell; 402, bent lug; 501, first nitinol rod; 502, sliding rod; 504, first control line; 505, second control line; 506, second nitinol rod; 507, positioning groove; 508, third nitinol rod; 601, handle; 602, nitinol rod controller; 603, control line controller; 604, catheter. Detailed implementation manners
[0037] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The following will describe the present application in detail with reference to the drawings and in combination with the embodiments.
[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0039] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0040] To solve the problem of leaflet slippage, the present application improves the two clamping ends of the clamp to firmly fix the leaflet on the clamp to prevent slippage. At the same time, a camera is provided on the front side of the guiding end of the clamp, which is used to collect data in real time when the device travels in the body, so that the doctor can obtain accurate internal images and information during the operation, which helps to guide the operation and timely adjust the treatment plan.
[0041] As Figures 1 to 17 shown, a cardiac mitral valve clamp provided by an embodiment of the present application includes a proximal member and a distal member. Among them, the proximal member includes a limit seat 101, a mounting groove 102, a fixing groove 104, and a mesh shell 401; the distal member includes a lower clip 201 and an upper clip 301. The proximal member is connected to the transmission device of the medical catheter through a coupling mechanism, wherein the coupling mechanism allows the release and retention of the cardiac mitral valve clamp; the distal member is fixed around the target tissue of the target object to grasp and fix the target tissue. The coupling mechanism is a threaded connection, a snap connection, or a magnetic connection structure to ensure the firmness and stability of the connection.
[0042] An installation groove 102 is formed inside the limit seat 101, and two oppositely arranged limit grooves 103 are formed in the installation groove 102. Specifically, the limit seat 101 is in the shape of the letter "U", and the limit seat 101 is strengthened by a first reinforcing rib 105 to prevent the limit seat 101 from deforming.
[0043] The lower clamping piece 201 is provided with two sets of oppositely arranged first through holes 202, and there are also two oppositely arranged second reinforcing ribs 203 on the lower clamping piece 201. There are two oppositely arranged limit buckles 204 on the lower clamping piece 201, and the limit buckles 204 are arranged in one-to-one correspondence with the limit grooves 103. There are two sets of oppositely arranged barbs 302 on the upper clamping piece 301, and the barbs 302 are arranged in one-to-one correspondence with the first through holes 202. Among them, both the upper clamping piece 301 and the lower clamping piece 201 are made of elastic materials. In the embodiment of the present application, three occluding barbs 302 are sequentially arranged on the upper clamping piece 301, which can make the clamp fix the valve leaf more firmly. The number of barbs can be less than 3 or more than 3 in other embodiments, and the present application does not limit this.
[0044] In this embodiment, the lower clamping piece 201 can be opened or closed relative to the limit seat 101. In the natural state, the lower clamping piece 201 is in an open state relative to the limit seat 101. When the lower clamping piece 201 is in a closed state, it can be inserted into the limit seat 101. In order to make the lower clamping piece 201 and the limit seat 101 be locked and limited to each other, it can be realized through the cooperation between the buckle and the limit groove 103. The upper clamping piece 301 can also be opened or closed relative to the limit seat 101. In the natural state, the upper clamping piece 301 is in a closed state relative to the limit seat 101. When the upper clamping piece 301 is in a closed state, it can be inserted into the lower clamping piece 201. At this time, the limit seat 101, the upper clamping piece 301 and the lower clamping piece 201 are all in the shape of the letter "U", and the upper clamping piece 301 and the lower clamping piece 201 are locked through the buckle cooperation between the barbs 302 and the first through holes 202.
[0045] The medical catheter 604 is fitted with a second nickel-titanium rod 506, and a third nickel-titanium rod 508 is fitted inside the second nickel-titanium rod 506. The second nickel-titanium rod 506 is also fitted with a first nickel-titanium rod 501. One end of the first nickel-titanium rod 501 is slidably fitted with a sliding rod 502, and a spring is provided between the first nickel-titanium rod 501 and the sliding rod 502.
[0046] A first control line 504 and a second control line 505 are fitted inside the third nickel-titanium rod 508. The first control line 504 is arranged in cooperation with the upper clamping piece 301, and the second control line 505 is arranged in cooperation with the limit seat 101.
[0047] The limiting seat 101 is provided with a plurality of fixing grooves 104. A net-shaped shell 401 is sleeved on the lower side of the limiting seat 101. The net-shaped shell 401 is provided with a plurality of bent lugs 402, and the bent lugs 402 are arranged in one-to-one correspondence and cooperation with the fixing grooves 104. In addition, the net-shaped shell 401 is fixedly connected to the limiting seat 101 through a clamping groove 106 and a clamping tooth 205. In this embodiment, the net-shaped shell 401 is made of a biological material. After a period of time when this clamp is installed, the net-shaped shell 401 will be filled and covered by newly grown muscles, further preventing the clamp from falling off.
[0048] A positioning groove 507 is formed at one end of the second nickel-titanium rod 506, and the positioning groove 507 is arranged in corresponding cooperation with the lower clamping piece 201 and the upper clamping piece 301.
[0049] Two groups of oppositely arranged second through holes 303 are formed in the upper clamping piece 301. The two ends of the upper clamping piece 301 are respectively in the shape of a pea pod, and the upper clamping piece 301 can facilitate reducing the weight of the clamp. A first reinforcing rib 105 is arranged on the outer side of the limiting seat 101, and the first reinforcing rib 105 can effectively strengthen the strength of the limiting seat 101. The second reinforcing rib 203 can effectively strengthen the strength of the two ends of the lower clamping piece 201 and prevent it from deforming.
[0050] The other end of the medical catheter 604 is fitted with a handle 601. A nickel-titanium rod controller 602 and two control line controllers 603 are fitted on the handle 601. One ends of the second nickel-titanium rod 506 and the third nickel-titanium rod 508 are both arranged in cooperation with the nickel-titanium rod controller 602. One end of the first control line 504 and one end of the second control line 505 are respectively fitted on the two control line controllers 603.
[0051] In this embodiment, the two ends of the first control line 504 are wound around the corresponding control line controller 603, and the first control line 504 passes through the two ends of the upper clamping piece 301 (refer to Figures 9 - 11 ), the two ends of the second control line 505 are wound around the corresponding control line controller 603, and the second control line 505 passes through the bottom end of the limiting seat 101 (refer to Figures 9 - 12 ).
[0052] Specifically, the nickel-titanium rod controller 602 on the handle 601 is used to control the extending length of the second nickel-titanium rod 506 at one end of the medical catheter 604. The two control line controllers 603 on the handle 601 are respectively used to control the tightness and release of the first control line 504 and the second control line 505. The control line controller 603 is a winding type controller, and the tightness of the corresponding first control line 504 and second control line 505 can be controlled by rotating the knob on the control line controller 603.
[0053] In this embodiment, when the first control line 504 is retracted, the two ends of the upper clip 301 will close relative to each other. When the first control line 504 is released, the two ends of the upper clip 301 will open relative to each other due to the action of the elastic force. When the first control line 504 is retracted, the lower clip 201 will move towards the inside of the limit seat 101, thereby causing the two ends of the lower clip 201 to close together. When the second control line 505 is released, the lower clip 201 moves upward relative to the limit seat 101, and the two ends of the lower clip 201 will open relative to each other due to the action of the elastic force. However, when the limit buckle 204 and the limit groove 103 form a buckle fit, when the second control line 505 is released, the lower clip 201 cannot move relative to the limit seat 101, effectively preventing the pliers from falling off. Refer to Figures 14 - 17 , where a in the figure is the left atrium, b is the mitral valve, and c is the pliers.
[0054] It should be noted that when the present utility model is in use, the medical catheter 604 needs to enter the heart through the femoral vein at the root of the thigh and above the mitral valve. Then, the guide rod for guiding and positioning in the medical catheter 604 is drawn out (during this process, both the first control line 504 and the second control line 505 are retracted, so that the upper clip 301 and the lower clip 201 are both located in the limit seat 101, and the limit seat 101 is located at one end of the second nitinol rod 506). Insert the second nitinol rod 506 and push the second nitinol rod 506 above the mitral valve. Then, push the limit seat 101 into the left ventricle and set it towards the mitral valve and insert it downward so that the limit seat 101 is located below the mitral valve. At this time, the first control line 504 is retracted and the second control line 505 is released. The spring pushes the sliding rod 502, causing the upper clip 301 and the lower clip 201 to disengage from the limit seat 101 (refer to Figure 1 and Figure 10 ), the lower clip 201 opens. At this time, the limit seat 101 moves upward, and the leaflets of the mitral valve are located between the upper clip 301 and the lower clip 201. Then, control the release of the first control line 504 so that the upper clip 301 and the lower clip 201 clamp the leaflets of the mitral valve (when the leaflets of the mitral valve are not clamped, the opening or retraction of the upper clip 301 can be controlled by the first control line 504, and the leaflets of the mitral valve can be clamped again). When the upper clip 301 and the lower clip 201 clamp the leaflets of the mitral valve, control the retraction of the second control line 505 so that the retracted upper clip 301 and lower clip 201 slowly enter the limit seat 101 (refer to Figure 5 ). When the corresponding limit buckle 204 and the limit groove 103 are buckled, cut off the first control line 504 and the second control line 505 and draw them out to complete the installation of the pliers. At this time, the limit seat 101 cuts off the connection with the nitinol rod, then draw out the nitinol rod, and finally draw out the medical catheter 604 and suture.
[0055] The embodiments of the present application further provide a medical catheter, which includes a catheter body, a transmission device, and a cardiac mitral valve clip applicator.
[0056] The catheter body is the main part of the interventional cardiac medical catheter and is a flexible tubular structure with a certain stiffness. Its structural design enables it to be guided and positioned in the cardiac vascular system while maintaining sufficient stability and controllability. The catheter body is usually made of materials with good biocompatibility, such as polyurethane, polyethylene, polytetrafluoroethylene, etc. The outer diameter and length of the catheter body can vary according to specific interventional surgical requirements. The outer diameter of the catheter body varies within a diameter range to adapt to cardiovascular vessels of different diameters. Its length also varies according to surgical needs and can range from dozens of centimeters to several meters. The design of the catheter body takes into account the connection compatibility with the transmission device and the cardiac mitral valve clip applicator to ensure a firm connection between the two. In addition, the end of the catheter body usually has a certain curvature or marking to enable doctors to accurately locate the target site when guiding the catheter.
[0057] As described above, the transmission device can include multiple nitinol rods, sliding rods, and multiple control lines. Its main function is to guide the cardiac mitral valve clip applicator to the target site of the target object. The transmission device is located at one end of the catheter body and precisely guides and positions the cardiac mitral valve clip applicator. The guiding end of the transmission device can be provided with a length scale, a metal marker, or a fluorescent marker. The guiding end is the front end part of the transmission device and is used to help the transmission device penetrate the vascular system and accurately locate to the target site. The guiding end has a conical shape with a size smaller than a preset size threshold, which helps to penetrate blood vessels or narrow channels and reduces vascular injury and resistance. In some embodiments, a camera or imaging device can be provided on the front side of the guiding end of the transmission device to collect data inside the target object in real time when the transmission device travels in the body. This can provide real-time image feedback to help doctors more accurately guide the catheter to the target site.
[0058] In this embodiment, through the above structure and function, the transmission device realizes the precise guidance and positioning of the cardiac mitral valve clip applicator, provides a reliable operation platform and real-time image feedback for interventional cardiac surgery, thereby improving the accuracy and safety of the surgery.
[0059] The embodiments of the present application further provide an interventional medical device, which includes the above-mentioned medical catheter and a display device. The display device is used to display the images fed back by the camera on the guiding end of the transmission device of the medical catheter.
[0060] This application has significant application value and broad application prospects in cardiac mitral valve clip surgery. First, this technology sets multiple occluding barbs on the upper clip of the cardiac mitral valve clip, enabling the clip to fix the valve leaflets more firmly, thereby reducing the risk of postoperative valve leaflet displacement and significantly improving the stability and success rate of the surgery. This improvement is particularly important for cardiac surgeons when performing mitral valve repair surgery, as it can ensure that the valve leaflets remain in the correct position during and after the surgery.
[0061] In addition, this application sets a camera at the head of the medical catheter, capable of real-time collecting and transmitting image data of the surgical site. Through this real-time data collection and transmission, doctors can obtain clear and accurate visual information during the surgery, thereby performing more precise operations. In this way, not only the safety of the surgery is improved, but also the incidence of surgical complications can be significantly reduced.
[0062] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure for the device. For example, if the device in the figure is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.
[0063] In addition, it should be noted that using words such as "first", "second" etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above words have no special meaning, and thus cannot be construed as a limitation on the protection scope of this application.
[0064] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.
Claims
1. A cardiac mitral valve clamp, characterized in that: include: A proximal end member connected to the transfer device via a coupling mechanism of the transfer device of the medical catheter, wherein the coupling mechanism allows the release and retention of the cardiac mitral valve clamp; The distal end piece is fixed around the target tissue of the target subject to grasp and fix the target tissue.
2. The clamp according to claim 1, characterized in that: The coupling mechanism is a threaded connection, a snap connection or a magnetic connection structure to ensure the firmness and stability of the connection.
3. The clamp according to claim 1, characterized in that: The distal end member contains a connecting component therein for connecting with the coupling mechanism of the transfer device.
4. The clamp according to claim 1, characterized in that: The transfer device is made of a material that is soft but has a stiffness greater than a stiffness threshold.
5. The clamp according to claim 2, characterized in that: The front end of the transfer device is a guide end, and the guide end has a conical shape with a size smaller than a preset size threshold so as to pass through a blood vessel or a narrow channel.
6. The clamp according to claim 5, characterized in that: The guide end of the transfer device has a length scale, a metal mark or a fluorescent mark.
7. The clamp according to claim 5, characterized in that: A camera is disposed at the front side of the guide end, and is used to collect data inside the target object in real time when the transfer device moves inside the target object.
8. The clamp according to claim 7, characterized in that: The medical catheter further comprises a sleeve, which is used to cover the camera head. The space between the sleeve and the camera head is filled and sealed with transparent adhesive so that the camera head is covered by the transparent adhesive.
9. A medical catheter, characterized in that: include: The catheter body; a delivery device, disposed at one end of the catheter body, for guiding the cardiac mitral valve clamp to a target site of a target object; The clamp according to any one of claims 1 to 8, connected to the transmission device, is used to grasp and fix the target tissue of the target site.
10. An invasive medical device, characterized in that: include: The medical catheter according to claim 9; A display device is used to display the image fed back by the medical catheter.