CN113616387A - Valve clamping device and valve repair system - Google Patents
Valve clamping device and valve repair system Download PDFInfo
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- CN113616387A CN113616387A CN202111178723.7A CN202111178723A CN113616387A CN 113616387 A CN113616387 A CN 113616387A CN 202111178723 A CN202111178723 A CN 202111178723A CN 113616387 A CN113616387 A CN 113616387A
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- driving shaft
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- clamping device
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
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- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
The embodiment of the application relates to a valve clamping device and valve repair system, the valve clamping device includes fixed baseplate, the through-hole that runs through fixed baseplate, establish the clamping part on fixed baseplate, first drive shaft and the second drive shaft of dismantling the connection at first drive shaft, establish the draw-in groove on first drive shaft and support the push member, the first end of first drive shaft rotates after passing the through-hole and connects on the clamping part, be used for driving the clamping part to switch between lock state and free state, support the push member and include the frame and establish the flexure strip on the frame, the frame is established on fixed baseplate, the flexure strip stretches into in the through-hole, the flexure strip can the butt on the draw-in groove. The valve repair system comprises the valve clamping device. The valve clamping device and the valve repair system disclosed by the embodiment of the application improve the locking force in a mode of increasing a mechanical locking structure so as to improve the stability and the operability.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a valve clamping device and a valve repairing system.
Background
The surgery usually adopts the operation modes such as the valve edge to edge suture operation to treat the mitral valve regurgitation, the valve edge to edge suture can be completed by the valve clamping device in the minimally invasive treatment process, and if the valve clamping device is accidentally opened or the valve clamp falls off after being implanted in the operation process, the operation can fail, and the life health of a patient can be seriously damaged.
Disclosure of Invention
The embodiment of the application provides a valve clamping device and a valve repair system, and the locking force is improved by increasing a mechanical locking structure so as to improve the stability and the operability.
The above object of the embodiments of the present application is achieved by the following technical solutions:
in a first aspect, embodiments of the present application provide a valve clamping device, comprising:
a fixed base;
the through hole penetrates through the fixed base;
the clamping part is arranged on the fixed base;
the first end of the first driving shaft passes through the through hole and then is rotatably connected to the clamping part, and the first driving shaft is used for driving the clamping part to be switched between a locking state and a free state;
a second driving shaft detachably coupled to the first driving shaft;
the clamping groove is arranged on the first driving shaft; and
the pushing piece comprises an outer frame and an elastic piece arranged on the outer frame, the outer frame is arranged on the fixed base, and the elastic piece extends into the through hole;
wherein, the elastic piece can butt on the draw-in groove.
In a possible implementation manner of the first aspect, a first connecting groove is formed in a side wall of the first driving shaft, and a second connecting groove is formed in a side wall of the second driving shaft;
the second end of the first driving shaft can extend into the second connecting groove;
the first end of the second drive shaft can project into the first connecting groove.
In a possible implementation manner of the first aspect, an end of the elastic piece, which is used for being in contact with the card slot, is inclined in a direction away from the clamping portion.
In a possible implementation manner of the first aspect, the number of the card slots is multiple.
In one possible implementation manner of the first aspect, there are two groups of the card slots, and the number of the card slots in each group is one or more;
the quantity of flexure strip on the frame is two, and every flexure strip matches a set of draw-in groove.
In a possible implementation manner of the first aspect, each of the slots has a different distance from the same end surface of the first drive shaft in the axial direction of the first drive shaft.
In a possible implementation manner of the first aspect, the clamping portion is provided with a positioning hole;
the first end of the first driving shaft extends into the positioning hole, and a positioning groove is formed in the side wall of the part, located in the positioning hole, of the first driving shaft;
the clamping part is provided with a pin which passes through the through hole and the positioning groove;
wherein, there is the space between pin and the constant head tank for restrict the rotation range of first drive shaft.
In one possible implementation of the first aspect, the number of the positioning grooves is two, and the two positioning grooves are symmetrical with respect to an axis of the first drive shaft.
In a second aspect, embodiments of the present application provide a valve repair system comprising a valve clamping device as described in the first aspect and any implementation manner of the first aspect.
Drawings
Fig. 1 is a schematic structural diagram of a valve clamping device provided in an embodiment of the present application.
Fig. 2 is a schematic view of the internal structure of a valve clamping device based on fig. 1.
Fig. 3 is a schematic view of a clamping portion according to an embodiment of the present disclosure in an opened state.
Fig. 4 is a schematic view illustrating a matching relationship between a first driving shaft and an abutting member according to an embodiment of the present application.
Fig. 5 is a schematic perspective view of a pushing member according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a clamping portion provided in an embodiment of the present application.
Fig. 7 is an enlarged schematic view of a portion a in fig. 3.
Fig. 8 is a schematic view of a connection between a clamping portion and a first driving shaft according to an embodiment of the present disclosure.
Fig. 9 (a) and 9 (B) are schematic diagrams illustrating a principle of limiting a rotation range of the first driving shaft according to an embodiment of the present application.
Fig. 10 is a schematic diagram of another principle for limiting the rotation range of the first driving shaft according to the embodiment of the present application.
Fig. 11 is a schematic diagram of a first driving shaft and a second driving shaft contacting each other according to an embodiment of the present disclosure.
Fig. 12 is a schematic view of a first drive shaft and a second drive shaft out of contact according to an embodiment of the present disclosure.
In the figure, 11, a fixed base, 12, a through hole, 13, a clamping part, 14, a first driving shaft, 15, a second driving shaft, 16, a pushing part, 131, a positioning hole, 132, a lower clamp, 133, a push rod head, 134, a rotating arm, 135, an upper clamp, 141, a first connecting groove, 142, a clamping groove, 143, a positioning groove, 151, a second connecting groove, 161, an outer frame, 162 and an elastic sheet.
Detailed Description
The technical solution of the present application will be described in further detail below with reference to the accompanying drawings.
For a clearer understanding of the technical solutions in the present application, a brief description of the valve clip and its use will be given first.
Surgery usually adopts surgery such as valve edge-to-edge suturing to treat mitral valve regurgitation, but the surgery has the defects of complicated surgery process, high surgery cost, high patient trauma, high complication risk, long hospitalization time, pain in the patient recovery process and the like.
The existing minimally invasive treatment instrument is based on the edge-to-edge operation principle of a valve, a valve clamping device is conveyed to a mitral valve through an interventional catheter, and an anterior leaflet and a posterior leaflet of the mitral valve are simultaneously grasped through relative opening and closing of the clamping device, so that the leaflets are pulled towards each other, and the purposes of reducing the leaflet gap and treating mitral valve regurgitation are achieved.
The treatment mode has the conditions that the valve clamp is opened in advance in the conveying process, accidentally opened in the process of clamping valve leaflets, or the valve clamp falls off after implantation, and the like, both the valve clamp which is opened in advance and accidentally opened can cause operation failure, at the moment, the opened valve clamp needs to be taken out of a human body, and the valve clamp falls off, which means that a patient needs to perform an operation again.
The above situations all occur because the locking force of the valve clamp is low or the locking force cannot meet the requirement of complex operation environment in human body, for example, in the transportation process, a small incision needs to be cut on the human body, then the valve clamp is sent into the heart through the blood vessel of the human body by using an interventional catheter, and the transportation path needs to conform to the shape of the blood vessel. Considering the influence of various factors such as the shape of the blood vessel, the thickness of the blood vessel, three-dimensional ultrasonic guidance and the like, the probability of accidental opening of the valve clamp in the transportation process is increased.
The valve clamping device provided by the embodiment of the application uses the mechanical locking structure to provide locking, and the problem that the valve clamping device is accidentally opened can be fundamentally solved.
Referring to fig. 1 and 2, in order to provide the valve clamping device disclosed in the embodiment of the present application, the valve clamping device is composed of a fixing base 11, a clamping portion 13, a first driving shaft 14, a second driving shaft 15, a pushing member 16, and the like, a through hole 12 is formed in the fixing base 11, both ends of the through hole 12 are communicated with an outer wall of the fixing base 11, and the through hole 12 is used for supporting the movement and rotation of the first driving shaft 14.
Referring to fig. 1 and 3, the clamping portion 13 has two working states, namely a locked state and a free state, in which the clamping portion 13 cannot be opened or the opening angle cannot be adjusted, so that the opening angle of the clamping portion 13 can be adjusted to a minimum during transportation, which helps to reduce the occupied space of the clamping portion 13, and is suitable for moving in a blood vessel and adjusting the position and posture at or near the mitral valve of the heart.
The clamping part 13 in the locking state clamps the anterior leaflet and the posterior leaflet of the mitral valve, and can fix the anterior leaflet and the posterior leaflet of the mitral valve, thereby achieving the purposes of reducing the leaflet clearance and treating mitral valve regurgitation.
The free state of the clamping portion 13 means that the opening angle of the finger clamping portion 13 can be adjusted, for example, under the guidance of three-dimensional ultrasound, the opening angle of the clamping portion 13 is adjusted according to the actual positions of the anterior leaflet and the posterior leaflet of the mitral valve, so that the clamping portion 13 can clamp the anterior leaflet and the posterior leaflet of the mitral valve at the same time.
The power when the clamping part 13 acts is provided by the first driving shaft 14, the first end of the first driving shaft 14 passes through the through hole 12 and then is connected to the clamping part 13 in a rotating manner, when the first driving shaft 14 slides along the axial direction of the through hole 12, the clamping part 13 can be driven to perform corresponding actions, for example, when the first end of the first driving shaft 14 moves towards the direction far away from the fixed base 11, the first driving shaft 14 can apply a pushing force to the clamping part 13, and the opening angle of the clamping part 13 can continue to increase along with the movement of the first driving shaft 14.
When the first end of the first driving shaft 14 moves to a direction close to the fixed base 11, the first driving shaft 14 applies a pulling force to the nip portion 13, and the nip portion 13 is still in a free state, but the opening angle is reduced.
The second drive shaft 15 is detachably connected to the first drive shaft 14, and transmits the operation of the operator to the first drive shaft 14 (forward, backward, and rotation) as a transition. It will be appreciated that the power for sliding the first drive shaft 14 within the through bore 12 is provided by the operator, since the first drive shaft 14 is attached to the clamping portion 13, the first drive shaft 14 needs to remain within the body after the procedure is completed.
It should also be understood that the operator controls the valve clamping device provided in the embodiments of the present application through the interventional catheter, that is, during actual use, the second drive shaft 15 will be connected to the interventional catheter, and the operation of the operator is transmitted to the first drive shaft 14 through the interventional catheter and the second drive shaft 15.
After the procedure is completed, the first drive shaft 14 and the second drive shaft 15 are disengaged and the second drive shaft 15 is removed from the body with the interventional catheter.
Referring to fig. 4 and 5, the first driving shaft 14 is further provided with a locking groove 142, and the locking groove 142 is used for limiting the movement of the first driving shaft 14 so that the first driving shaft can only rotate under the control of an operator through the interventional catheter and the second driving shaft 15.
The abutting member 16 is matched with the locking groove 142, the abutting member 16 is composed of an outer frame 161 and an elastic sheet 162 arranged on the outer frame 161, the outer frame 161 is arranged on the fixed base 11, the elastic sheet 162 extends into the through hole 12, and when the first driving shaft 14 is positioned in the through hole 12, the elastic sheet 162 can abut against the locking groove 142.
Specifically, a jack may be disposed on the fixing base 11, the jack is communicated with the through hole 12, and the outer frame 161 may be directly inserted into the jack, that is, fixed on the fixing base 11 by plugging.
A portion of the elastic piece 162 extends into the through hole 12, and when the elastic piece 162 abuts against the locking groove 142, the first driving shaft 14 can be limited from sliding in the through hole 12, that is, when the elastic piece 162 contacts the first driving shaft 14 through the locking groove 142, a pushing force opposite to the moving direction of the first driving shaft 14 can be applied to the first driving shaft 14.
In connection with a specific procedure, in the valve clamping device provided in the embodiment of the present application, the first driving shaft 14 is subjected to a pushing force during the heart entering process, and the first driving shaft 14 is subjected to a pushing force during the heart opening process of the clamping portion 13, so that after the first driving shaft 14 is limited by the elastic piece 162 and the clamping groove 142, the pushing force applied to the first driving shaft 14 is transferred to be borne by the elastic piece 162, and the clamping portion 13 can be prevented from opening.
When the clamping portion 13 needs to be opened, the first driving shaft 14 is appropriately driven to rotate, and when the elastic piece 162 is rotated to be separated from the clamping groove 142, the first driving shaft 14 can slide in the through hole 12 along the axis of the through hole 12, and at this time, the operator can control the clamping portion 13 through the first driving shaft 14.
In some possible implementations, the clamping portion 13 includes two symmetrical or asymmetrical lower clamps 132, the lower clamps 132 are disposed outside the fixed base 11, the first driving shaft 14 drives a symmetrical or asymmetrical push rod head 133 to move axially, and the push rod head 133 drives the lower clamps 132 to move radially through the rotating arm 134.
The operator operates the second driving shaft 15 through the near-end handle to drive the first driving shaft 14, and the clamping part is opened and closed or closed. The upper clip 135 is controlled by the proximal handle to be snug against the fixed base 11, and the upper clip control wire is lowered when capturing the leaflets, the upper clip 135 reverts to its natural shape and forms an interaction force with the lower clip 132 on the leaflets.
It should be understood herein that the upper clip 135 may use a nitinol alloy having super elastic properties.
More specifically, because the elastic piece 162 and the locking groove 142 are added, the first driving shaft 14 has two positions in the through hole 12, namely, a rotating position and a non-rotating position, when the first driving shaft 14 is in the rotating position, the elastic piece 162 is in contact with the locking groove 142, and at this time, the first driving shaft 14 is stationary relative to the fixed base 11, and the clamping portion 13 is in the locking state; when the first driving shaft 14 is in the non-rotating position, the first driving shaft 14 can slide in the through hole 12, and the clamping portion 13 is in a free state.
Taking a complete surgical procedure as an example, an operator uses an interventional catheter to deliver the valve clamping device disclosed in the embodiment of the present application to the mitral valve, and then drives the second driving shaft 15 to rotate through the interventional catheter, and when the second driving shaft 15 rotates, the first driving shaft 14 is driven to rotate together with the second driving shaft, at this time, the first driving shaft 14 is switched from the non-rotating position to the rotating position, and the clamping portion 13 is switched from the locking state to the free state.
After the first driving shaft 14 is switched to the rotation position, the operator applies a pushing force to the first driving shaft 14 through the interventional catheter and the second driving shaft 15, and the end of the first driving shaft 14 connected to the connecting nip portion 13 starts to move away from the fixed base 11.
The opening angle of the clamping portion 13 in the free state is dynamically adjusted according to the operation of the operator, and after the adjustment is completed, the clamping portion 13 grasps the anterior leaflet and the posterior leaflet of the mitral valve at the same time.
Subsequently, the operator drives the first drive shaft 14 to rotate again through the interventional catheter and the second drive shaft 15, so that the first drive shaft 14 is switched from the rotating position to the non-rotating position and correspondingly the clamping portion 13 is also switched from the free state to the locked state.
Finally, the second drive shaft 15 is removed from contact with the first drive shaft 14 and removed from the patient with the interventional catheter.
In summary, the valve clamping device provided by the embodiment of the present application uses the second driving shaft 15 and the first driving shaft 14 to achieve the opening and opening angle adjustment of the clamping portion 13 and the fixation of the anterior leaflet and the posterior leaflet of the mitral valve, and during the entering process, the first driving shaft 14 is in the non-rotating position and cannot slide in the through hole 12, so that the problems of premature opening of the clamping portion 13 during the delivery process and accidental opening during the process of clamping the leaflets are solved.
After the anterior leaflet and the posterior leaflet of the mitral valve are fixed, the first drive shaft 14 will return to the non-rotational position again, and at this time, the clamping portion 13 is still in the locked state, solving the problem of falling off after implantation.
It will be appreciated that in the case where the first drive shaft 14 does not rotate, it is possible to ensure that the clamping portion 13 is always in the locked state, and since the rotation of the first drive shaft 14 is controlled by the operator, it is possible to fundamentally solve the problem of the clamping portion 13 being accidentally opened.
It should also be understood that the falling-off means that the clamping portion 13 is turned from the locking state to the free state, but due to the existence of the locking groove 142 and the elastic piece 162, the tensile force applied to the first driving shaft 14 is turned to be borne by the elastic piece 162, so that the first driving shaft 14 can be kept stationary relative to the fixed base 11, and the clamping portion 13 is limited to the locking state.
Referring to fig. 4, as an embodiment of the valve clamping device, an end of the elastic piece 162 contacting the locking groove 142 is inclined away from the clamping portion 13. At this time, the elastic piece 162 is inclined in the opposite direction to the movement direction of the first driving shaft 14 when the clamping portion 13 is opened, which means that a larger external force is required to force the elastic piece 162 to bend when the first driving shaft 14 is in the non-rotating position.
When the first driving shaft 14 is in the non-rotating position, which means that the clamping portion 13 is in the locked state, the end of the elastic piece 162, which is used for contacting with the locking groove 142, is inclined in a direction away from the clamping portion 13, so that the locked state of the clamping portion 13 is more stable.
As a specific embodiment of the valve clamping device provided by the application, the number of the clamping grooves 142 is multiple, and after the number of the clamping grooves 142 is increased, the clamping part 13 can have different opening angles in a locking state, so that the use requirements under more scenes can be met.
It will be appreciated that each patient's condition may be different and that in some circumstances it may be desirable to have the clamping portion 13 lock at different angles, for example 15 °, 20 °, 25 °, 30 °, etc., and each detent 142 enables the clamping portion 13 to lock at a particular angle.
Thus, when different conditions are met, the operator can choose to fix the anterior leaflet and the posterior leaflet of the mitral valve at different angles so as to obtain better treatment effect.
Further, the slots 142 are divided into two groups, the number of the slots 142 in each group is one or more, correspondingly, the number of the elastic pieces 162 on the outer frame 161 is two, and each elastic piece 162 is matched with one group of the slots 142.
At this time, there are two cases of the two sets of card slots 142,
firstly, in the axial direction of the first driving shaft 14, the distance between two corresponding slots 142 in each set of slots 142 and the same end surface of the first driving shaft 14 is the same, that is, the two elastic pieces 162 can be simultaneously clamped into the matched slots 142 to limit the non-rotation position of the first driving shaft 14, so as to further improve the stability of the locking state of the clamping portion 13.
Secondly, referring to fig. 7, in the axial direction of the first driving shaft 14, the distance between each of the locking slots 142 and the same end surface of the first driving shaft 14 is different, that is, only one elastic piece 162 limits the non-rotation position of the first driving shaft 14 at a time.
It will be appreciated that the presence of gaps between adjacent pockets 142, the use of the second arrangement significantly increases the density of pockets 142, and provides more options for the gripping portion 13 to lock at different angles, for example,
the angle choices that can be provided for the same card slot 142 are 15 °, 20 °, 25 °, and 30 °. The two sets of slots 142 arranged in a staggered manner can provide the angle options of 15 °, 17.5 °, 20 °, 22.5 °, 25 °, 27.5 °, 30 ° and 32.5 °.
It is clear that two staggered sets of slots 142 can provide more angular options within a limited distance.
Referring to fig. 4 and 8, as an embodiment of the valve clamping device provided by the present application, a positioning hole 131 is added to the clamping portion 13, and the first end of the first driving shaft 14 extends into the positioning hole 131.
In some possible implementations, the positioning hole 131 is a stepped hole, and the annular surface at the boundary in the stepped hole may serve as a force bearing surface during the process of pulling the end of the first driving shaft 14 connected with the clamping portion 13 to be close to the fixing base 11.
Accordingly, the first driving shaft 14 is a stepped shaft, and the shape of the first driving shaft 14 matches the shape of the positioning hole 131 when it is a stepped hole.
Referring to fig. 9 (a) and 9 (B), as an embodiment of the valve clamping device provided in the application, a positioning groove 143 is further formed on a side wall of a portion of the first driving shaft 14 located in the positioning hole 131, and the positioning groove 143 is used to cooperate with the pin 21 to limit a rotation range of the first driving shaft 14.
The pin 21 is fixed to the clamping portion 13 and passes through the through hole 12 and the positioning groove 143, i.e., a portion of the pin 21 located in the through hole 12 is located in the positioning groove 143 of the first driving shaft 14. Because the positioning groove 143 is located on the side wall of the first driving shaft 14, if the pin 21 can be kept in contact with the positioning groove 143, the first driving shaft 14 cannot be rotated.
Therefore, a gap is additionally formed between the pin 21 and the positioning groove 143, that is, the positioning groove 143 is not shaped to match the pin 21, and when the positioning groove 143 rotates around the axis of the first driving shaft 14, the first driving shaft 14 cannot rotate any more only when the positioning groove 143 contacts the pin 21.
Referring to fig. 10, during the rotation of the positioning groove 143 around the axis of the first driving shaft 14, there may be a case where the middle portion (arc-shaped surface) of the positioning groove 143 is always in contact with the pin 21, which does not affect the influence of the pin 21 and the positioning groove 143 on the rotation range of the first driving shaft 14.
In combination with a specific scenario, the first driving shaft 14 has two positions in the through hole 12, namely a rotating position and a non-rotating position, and an operator needs to determine whether the first driving shaft 14 is in the rotating position or the non-rotating position by hand feeling and three-dimensional ultrasonic guidance in the process of rotating the first driving shaft 14, and how many angles the operator needs to rotate the first driving shaft 14 can switch the first driving shaft 14 from the rotating position to the non-rotating position or from the non-rotating position to the rotating position.
After the pin 21 and the positioning groove 143 are used, the rotation range of the first driving shaft 14 can be limited to only rotate between the rotation position and the non-rotation position, for example, the first driving shaft 14 rotates to the rotation position when rotating to the left, so that the operator can clearly know that the first driving shaft 14 is located at the rotation position when rotating to the left until the first driving shaft 14 cannot rotate, and accordingly can clearly know that the first driving shaft 14 is located at the non-rotation position when rotating to the right until the first driving shaft cannot rotate.
Further, the number of the positioning grooves 143 is two, and the two positioning grooves 143 are symmetrical with respect to the axis of the first drive shaft 14, and the two positioning grooves 143 can be formed on the front and back sides. It should be understood that if there is only one positioning slot 143, the installation position of the first driving shaft 14 is fixed, and with the addition of the positioning slot 143, the first driving shaft 14 can be installed and used after rotating 180 ° with respect to the first driving shaft 14.
Referring to fig. 11 and 12, as an embodiment of the valve clamping device, a first connecting groove 141 is formed on a sidewall of the first driving shaft 14, and a second connecting groove 151 is formed on a sidewall of the second driving shaft 15. The first drive shaft 14 and the second drive shaft 15 are connected in the following manner,
the second end of the first driving shaft 14 can be inserted into the second coupling groove 151, and the first end of the second driving shaft 15 can be inserted into the first coupling groove 141.
The first driving shaft 14 can be moved or rotated about its own axis by the second driving shaft 15, but the connection is easy to disengage, that is, the first driving shaft 14 can be easily disengaged from the second driving shaft 15 without the restriction of the through hole 12.
In combination with a specific use scenario, in the process of delivering the valve clamping device provided in the embodiment of the present application into the body of a patient and clamping the anterior leaflet and the posterior leaflet of the mitral valve, the joint of the first driving shaft 14 and the second driving shaft 15 is located in the through hole 12, after the clamping of the anterior leaflet and the posterior leaflet of the mitral valve is completed, an operator applies a pulling force to the second driving shaft 15 to pull out the joint of the first driving shaft 14 and the second driving shaft 15 from the through hole 12, and then slightly shakes the second driving shaft 15, so that the first driving shaft 14 and the second driving shaft 15 can be separated.
Embodiments of the present application also disclose a valve repair system comprising any of the valve clamping devices described in the above.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. A valve clamping device, comprising:
a fixed base (11);
a through hole (12) that penetrates the fixed base (11);
a clamping portion (13) provided on the fixed base (11);
the first end of the first driving shaft (14) passes through the through hole (12) and then is rotatably connected to the clamping part (13) and is used for driving the clamping part (13) to switch between a locking state and a free state;
a second drive shaft (15) detachably connected to the first drive shaft (14);
a lock groove (142) provided on the first drive shaft (14); and
the pushing piece (16) comprises an outer frame (161) and an elastic sheet (162) arranged on the outer frame (161), the outer frame (161) is arranged on the fixed base (11), and the elastic sheet (162) extends into the through hole (12);
wherein, the elastic piece (162) can be abutted against the clamping groove (142).
2. The valve clamping device according to claim 1, wherein a first connecting groove (141) is formed on the side wall of the first driving shaft (14), and a second connecting groove (151) is formed on the side wall of the second driving shaft (15);
the second end of the first driving shaft (14) can extend into the second connecting groove (151);
the first end of the second drive shaft (15) can protrude into the first connecting groove (141).
3. A valve clamping device according to claim 1, wherein the end of the flexible sheet (162) which is adapted to contact the clamping groove (142) is inclined away from the clamping portion (13).
4. The valve clamping device according to claim 1, wherein the number of the clamping grooves (142) is multiple.
5. The valve clamping device according to claim 4, wherein the number of the clamping grooves (142) in each group is one or more;
the number of the elastic pieces (162) on the outer frame (161) is two, and each elastic piece (162) is matched with one group of clamping grooves (142).
6. A valve clamping device according to claim 5, characterized in that the distance between each clamping groove (142) and the same end face of the first drive shaft (14) is different in the axial direction of the first drive shaft (14).
7. A valve clamping device according to claim 1, wherein the clamping part (13) is provided with positioning holes (131);
the first end of the first driving shaft (14) extends into the positioning hole (131), and a positioning groove (143) is formed in the side wall of the part, located in the positioning hole (131), of the first driving shaft (14);
a pin (21) is arranged on the clamping part (13), and the pin (21) passes through the through hole (12) and the positioning groove (143);
wherein, a gap is arranged between the pin (21) and the positioning groove (143) for limiting the rotation range of the first driving shaft (14).
8. Valve clamping device according to claim 7, wherein the number of positioning slots (143) is two, the two positioning slots (143) being symmetrical with respect to the axis of the first drive shaft (14).
9. A valve repair system comprising a valve clamping device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111178723.7A CN113616387B (en) | 2021-10-11 | 2021-10-11 | Valve clamping device and valve repair system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111178723.7A CN113616387B (en) | 2021-10-11 | 2021-10-11 | Valve clamping device and valve repair system |
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| Publication Number | Publication Date |
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| CN113616387A true CN113616387A (en) | 2021-11-09 |
| CN113616387B CN113616387B (en) | 2022-01-21 |
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| CN202111178723.7A Active CN113616387B (en) | 2021-10-11 | 2021-10-11 | Valve clamping device and valve repair system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113616387B (en) | 2022-01-21 |
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Address after: 201207 Shanghai Pudong New Area free trade trial area, 1 spring 3, 400 Fang Chun road. Patentee after: Shanghai Huihe Medical Instrument Co.,Ltd. Patentee after: Shanghai Huihe Medical Technology Co.,Ltd. Address before: 201207 Shanghai Pudong New Area free trade trial area, 1 spring 3, 400 Fang Chun road. Patentee before: Shanghai Huihe Medical Instrument Co.,Ltd. Patentee before: Shanghai Huihe Medical Technology Co.,Ltd. |
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