CN115227308B - Lock and shear integrated device - Google Patents
Lock and shear integrated device Download PDFInfo
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- CN115227308B CN115227308B CN202211168998.7A CN202211168998A CN115227308B CN 115227308 B CN115227308 B CN 115227308B CN 202211168998 A CN202211168998 A CN 202211168998A CN 115227308 B CN115227308 B CN 115227308B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0467—Instruments for cutting sutures
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0469—Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00243—Type of minimally invasive operation cardiac
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B2017/0496—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials for tensioning sutures
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Abstract
A lock-shear integrated device can be applied to mitral valve repair, and has a matched structure formed at one end of a base block contacted with a lock block, so that when the lock block is contacted with the base block, the route of a suture line from a first threading hole of the base block to a second threading hole of the lock block is greater than the linear distance from an orifice of the first threading hole of the base block adjacent to the lock block to an orifice of the second threading hole of the lock block adjacent to the base block; the base block is provided with a first inclined plane, the shear block is provided with a second inclined plane, and a first inclination angle between the first inclined plane and the horizontal direction is larger than a second inclination angle between the second inclined plane and the horizontal direction. The device provided by the invention can be used as an efficient surgical suture line/flexible wire locking and breaking device in minimally invasive intervention operation, overcomes the problem of low line breaking efficiency in the prior art, can realize locking of the suture line/flexible wire, and reduces operation workload and operation difficulty.
Description
Technical Field
The application relates to the technical field of medical instruments for interventional therapy of heart valves, in particular to a locking and shearing integrated device for catheter interventional therapy.
Background
The mitral valve is a one-way valve located between the left atrium and the left ventricle of the heart, and a normal healthy mitral valve can control the flow of blood from the left atrium to the left ventricle while avoiding the flow of blood from the left ventricle to the left atrium. The mitral valve includes a pair of leaflets, called the anterior leaflet and the posterior leaflet. When the left ventricle is in a diastole state, the front lobe and the rear lobe are in an opening state, and blood flows to the left ventricle from the left atrium; when the left ventricle is in the contraction state, the edges of the anterior leaflet and the posterior leaflet should be completely closed to avoid blood flowing from the left ventricle to the left atrium. If the mitral valve is pathologically or functionally diseased, the anterior and posterior leaflets of the mitral valve may coapt poorly during left ventricular systole, and the mitral valve may not close properly, resulting in regurgitation of blood from the left ventricle to the left atrium, causing a series of pathophysiological changes known as "mitral regurgitation".
At present, the traditional surgical annuloplasty ring contraction operation needs thoracotomy, cardiac arrest and extracorporeal circulation, the patient has large trauma, high pain degree and slow recovery, and many elderly and weak people cannot tolerate the surgical operation. In recent years, the concept of performing an annulus annuloplasty through a minimally invasive catheterization procedure has come to be developed, which often requires cutting off a knotted or locked tail of a surgical suture during the annuloplasty procedure to complete the procedure under the condition of non-stop beating of the heart, and reduces the size of the mitral annulus through mitral annuloplasty to reduce mitral regurgitation. For example, a plurality of anchors connected in series by flexible elongate members may be implanted on the mitral valve annulus, and then the excess flexible elongate members may be tightened by a wire-rewinding device to shorten the spacing between adjacent anchors, the wire-rewinding device remaining in the body with the anchors and the flexible elongate members, thereby achieving a ring-contraction of the mitral valve annulus to treat mitral regurgitation; when the lesion position is treated through a minimally invasive operation or a surgical operation, a suture is implanted on the valve leaflet through a catheter, the tail end of the suture is fixed on the papillary muscle or the ventricular wall through a spiral anchor, and the suture is used as an artificial chordae tendineae to maintain the tension between the valve leaflet and the papillary muscle.
Chinese patent document cn201922419839.x discloses a transcatheter anchor implantation device and system, wherein the device is provided with a thread passing hole arranged on an anchor, the distal end of a suture is knotted to form a thread knot, the size of the thread knot is larger than that of the thread passing hole of the anchor, so that when the anchor is implanted into tissue, the thread knot is not separated from the anchor in the stretching process, the process needs to knot the suture, the whole process of minimally invasive surgery is carried out in a narrow catheter, therefore, the knotting of the suture brings certain technical difficulty and challenge to the operation, if the suture is knotted by additionally adding a surgical opening in the body of a patient, the workload of the surgery and the wound area of the patient are increased, and the device does not describe how to carry out thread breaking treatment on the suture; in some other cases, bleeding and perforation of tissue in the natural orifice of the body are often treated with hemostatic clips, while larger bleeding and perforation are treated with suture in combination with a plurality of hemostatic clips, but with some difficulty in tying and cutting the suture later.
Chinese patent document CN202110192357.4 discloses a thread cutting device, which includes a blade disposed at the distal end of a core tube, and the core tube is axially movable relative to an outer tube in a direction toward the distal end of the outer tube to drive the blade to cut the thread of the suture.
At present, no medical instrument in the market can quickly lock and cut off a suture line under an endoscope, the operation steps of knotting and fixing the suture line are often needed in the operation, and the traditional surgical operation is operated under the condition of open sight, and usually is knotted manually by a doctor. However, with advances in technology, various minimally invasive and interventional procedures, such as laparoscopic procedures, transcatheter interventional procedures, etc., are becoming more common. These procedures require only a small operating window to be cut in the patient's body, whereby an instrument such as an endoscope or an interventional catheter is inserted into the patient's body to reach a predetermined site for treatment, as described in chinese patent document No. cn201922419839. X. In such procedures, if knotting or fixing of the suture in the patient is required, the operator is usually required to perform operations outside the patient through the small operation window to knot or fix the suture in the patient, which requires the suture locking device.
In view of the above problems, there is a need to develop an efficient surgical suture/flexible wire locking and cutting device in minimally invasive interventional surgery, which overcomes the low cutting efficiency in the prior art, and can lock the suture/flexible wire, thereby reducing the workload and the operation difficulty.
Disclosure of Invention
In view of the deficiencies in the prior art, the present application provides a lock-and-shear integrated device that may be used in mitral valve repair to overcome or at least partially solve the above-mentioned problems.
The embodiment of the application provides a lock and shear integrated device, including lock shear part and cable, lock shear part includes base block, locking piece and shearing piece, and the lock core has the bolt shape to pass base block, locking piece and shearing piece in proper order and the cable is connected, base block with the locking piece is provided with the through-hole, the shearing piece be equipped with the through-hole, be formed with the internal thread in the through-hole of shearing piece, the lock core be formed with interior screw-thread fit's external screw thread base block, locking piece, shearing piece deviate the position of respective through-hole and be provided with the through wires hole, the stylolite is worn to locate base block, locking piece, the respective through wires hole of shearing piece, base block and the one end of locking piece contact form into the cooperation structure, thereby make when locking piece and base block contact, the stylolite is greater than the through wires hole of base block to the through wires hole of locking piece the path of through wires hole of base block and is greater than the through wires hole of base block faces the orifice of connecting the locking piece to the through wires hole of locking piece faces the straight line distance of connecting base block to the orifice of base block, thereby increase the area of contact of stylolite and locking piece, make the pressure between base block and the locking piece compress tightly less pressure relatively less pressure; be provided with first inclined plane on the base block be provided with the second inclined plane on the cutting block the both ends of locking piece correspond to first inclined plane with the second inclined plane be provided with first inclined plane with the inclined plane that the inclination of second inclined plane is the same, first inclined plane is greater than with the first inclination of horizontal direction the second inclined plane is with the second inclination of horizontal direction.
The base block is close to the lock block, the first inclined surface of the base block is in contact with the corresponding inclined surface of the lock block, the first inclined surface applies force F1 to the lock block, the second inclined surface of the shear block is in contact with the corresponding inclined surface of the lock block, the second inclined surface applies force F2 to the lock block, the lock block moves transversely due to the resultant force of the first inclined surface and the second inclined surface, a suture line from the threading hole of the base block to the threading hole of the lock block is pressed tightly, and therefore one end of the suture line is in a fixed state.
Preferably, the through holes of the base block and the locking block are arranged at the approximate center positions, and the through holes of the shear blocks correspond to the through holes of the base block and the locking block, so that when the base block, the locking block and the shear blocks are driven by the lock core to be close to each other, the base block, the locking block and the shear blocks are prevented from being offset, and friction or interference between the base block, the locking block and the shear blocks and a core tube or a guide tube is prevented; in other cases, the through hole of the base block, the through hole of the locking block and the through hole of the shear block can be arranged at positions deviated from the center, and the friction between the base block, the locking block and the shear block and a core tube or a guide tube is small enough only by ensuring that the friction is small enough under the driving of the lock core.
In a preferred embodiment, the diameter of the through holes of the base block and the locking block is larger than that of the through holes of the shear blocks, so that the lock cylinder does not interfere with the through holes of the base block and the locking block when moving axially, and the lock cylinder passes through the base block and the locking block when moving axially to connect the external threads of the lock cylinder with the internal threads of the shear blocks in a locking manner.
Optionally, when the lock block and the base block are in a compressed state, the threading hole of the lock block is adjacent to the orifice of the base block, and the threading hole of the base block is adjacent to the orifice of the lock block and is arranged in an offset manner in the axial direction; when the shear block is used for shearing a suture, the thread hole of the lock block is adjacent to the orifice of the shear block, the thread hole of the shear block is adjacent to the orifice of the lock block, and a certain offset is formed in the axial direction.
Optionally, be provided with at least one fixed needle on the base block, fixed needle passes the setting in proper order and is in the guiding hole of locking piece and shearing piece, guiding hole and fixed needle clearance fit for the joint of guide locking piece and base block, and the joint of locking piece and shearing piece.
In a preferred embodiment, the base block and the lock cylinder form a first annular gap, the lock block and the lock cylinder form a second annular gap, and the gap value of the second annular gap is larger than that of the first annular gap, so that the lock block has enough transverse movement to compress the suture and fix one end of the suture, and when pretightening force is applied to the suture, the tension of the suture does not act on surgical components implanted in a body, such as an anchor and the like, and the stress of the suture is transferred to the locking and shearing component and is completely isolated from the body of a patient, so that the dropped suture of the surgical components is reduced, higher pretightening force can be applied to the suture with one end fixed, and the suture breaking efficiency of the suture is increased.
In a preferred embodiment, the engaging structure is formed as a curved engaging structure, the curved engaging structure includes a concave surface and a convex surface, the concave surface may be disposed at one end of the locking piece or the base block, and the convex surface is disposed at one end of the base block or the locking piece corresponding to the concave surface, so that the contact area of the suture thread with the base block and the locking piece is increased by the curved engaging structure of the concave surface and the convex surface, and the suture thread is compressed between the base block and the locking piece with a relatively small pressure. In other embodiments, the engagement structure may have a generally "Z" shaped configuration, or a zigzag configuration, and other shapes may be used to facilitate increasing the path of the suture at the location where the lock and base contact.
Optionally, the threading holes arranged in the lock block and the scissors block are obliquely arranged, preferably, the threading holes arranged in the lock block and the scissors block can also be arranged in a bent manner, so that threading paths of suture lines in the lock block and the scissors block are increased.
According to the technical scheme, the locking and shearing integrated device is applied to mitral valve repair surgery, can compress and shear surgical sutures, realizes the movement of a single lock cylinder by controlling a cable retracting device, and realizes the compression and the shearing of the surgical sutures, and is simple to operate, and the locking and the shearing are integrated without step operation; the problem that the thread is cut in advance due to the fact that whether the thread is locked or not cannot be confirmed in vivo is avoided, and the operation risk is reduced. Meanwhile, the lock-shear integrated device is simple in structural design and few in part number, can well meet the operation requirement of a long and narrow operation space, and is particularly suitable for line shearing operation of intervention type operations.
Drawings
FIG. 1 is a schematic view of the overall structure of the lock-shear integrated device of the present invention;
FIG. 2 is a cross-sectional view of the shear assembly of the present invention taken along the axis of the lock cylinder;
FIG. 3 is a schematic illustration of the locking element of the present invention during compression of a suture;
FIG. 4 is a schematic view of the locking element of the present invention shearing a suture;
FIG. 5 is a schematic view of the position of the fixing pin 15 in the locking unit according to the present invention;
FIG. 6 is a schematic structural diagram of an embodiment of a mating structure of the present invention;
FIG. 7 is a schematic structural view of another embodiment of a mating structure of the present invention;
description of the reference numerals:
1-locking and shearing part, 2-cable, 10-suture line, 11-lock core, 12-base block, 13-locking block, 14-shearing block, 110-external thread, 120-first inclined plane, 121-first threading hole, 131-second threading hole, 140-second inclined plane, 141-internal thread, 142-third threading hole, 15-fixing needle and 16-base block hole.
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
Certain embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the disclosure are shown. Indeed, various embodiments of the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
The embodiment of the present application provides a locking and shearing integrated device, preferably applied to mitral valve repair, fig. 1 is a schematic view of the overall structure of the locking and shearing integrated device of the present invention, which includes a locking and shearing part 1 and a cable 2, the locking and shearing part 1 includes a base block 12, a locking block 13 and a shearing block 14, a lock cylinder 11 has a bolt shape and is connected to the cable 2 through the base block 12, the locking block 13 and the shearing block 14 in sequence, the base block 12 and the locking block 13 are provided with through holes, the shearing block 14 is provided with through holes, internal threads 141 are formed in the through holes of the shearing block 14, the lock cylinder 11 is formed with external threads 110 matched with the internal threads 141, first, second and third threading holes 121, 131, 142 are formed at positions where the base block 12, the locking block 13 and the shearing block 14 deviate from the respective through holes, a threading hole 121, a threading hole 131, a threading hole 141 is formed in each of the base block 12, the locking block 13 and a threading hole 121, and a threading hole of the shearing block 14 are formed in a matched structure, so that when the locking block 13 and the locking block 12 are in contact, the suture line is pressed by the threading hole, the threading hole 121, the locking block 12 is larger than the base block 12, the distance from the locking block 12 to the locking block 12 is smaller than the threading hole and the locking block 12, the threading hole 121, the locking block 12, and the threading hole, and the locking block 12, so that the threading hole 13 is pressed by the threading hole, and the locking block 12, so that the threading hole 13 is pressed by the threading hole, and the locking block 12; the first inclined surface 120 is provided on the base block 12, the second inclined surface 140 is provided on the shear block 14, the inclined surfaces corresponding to the first inclined surface 120 and the second inclined surface 140 are provided at both ends of the lock block 13, and the first inclined angle α of the first inclined surface 120 to the horizontal direction is larger than the second inclined angle β of the second inclined surface 140 to the horizontal direction, so that the lock block 13 generates more lateral displacement during the same axial displacement, the compression effect on the suture 10 is increased, and the suture compression is ensured before cutting, wherein the first and second inclined angles are acute angle portions of the inclined surfaces to the horizontal direction, and when the lock cylinder 11 is pulled and moved, the first inclined surface 120 of the base block 12 applies force F1 to the corresponding inclined surface of the lock block 13, and the second inclined surface 140 of the shear block 14 applies force F2 to the corresponding inclined surface of the lock block 13, and the resultant force direction of the forces F1 and F2 is the compression force of the lock block 13 and the base block 12.
Optionally, the base block 12 approaches the lock block 13, the first inclined surface 120 of the base block 12 contacts with the corresponding inclined surface of the lock block 13, the first inclined surface 120 applies a force F1 to the lock block 13, the second inclined surface 140 of the shear block 14 contacts with the corresponding inclined surface of the lock block 13, the second inclined surface 140 applies a force F2 to the lock block 13, the two forces combine to generate a lateral movement of the lock block 13, and the suture thread 10 from the first threading hole 121 of the base block 12 to the second threading hole 131 of the lock block 13 is pressed, so that one end of the suture thread 10 is in a fixed state.
Preferably, the through holes of the base block 12 and the lock block 13 are arranged at substantially central positions thereof, as shown in fig. 2, the through holes of the shear block 14 correspond to the through holes of the base block 12 and the lock block 13, so that when the base block 12, the lock block 13 and the shear block 14 are driven by the lock cylinder 11 to approach, the base block 12, the lock block 13 and the shear block 14 are prevented from being biased, causing friction or interference of the base block 12, the lock block 13 and the shear block 14 with a core tube or a guide tube; in other cases, the through hole of the base block 12, the through hole of the lock block 13, and the through hole of the shear block 14 may be disposed at positions off-center, so that friction between the base block 12, the lock block 13, and the shear block 14 and the core tube or the guide tube driven by the lock cylinder 11 is sufficiently small.
In a preferred embodiment, the diameter of the through holes of the base block 12 and the locking block 13 is larger than that of the through holes of the shear blocks 14, so that the lock cylinder 11 does not interfere with the through holes of the base block 12 and the locking block 13 when moving axially, and the lock cylinder 11 passes through the base block 12 and the locking block 13 when moving axially, so that the external threads 110 of the lock cylinder 11 are connected with the internal threads 141 of the shear blocks 14 in a locking manner.
Optionally, as shown in fig. 3, when the locking block 13 and the base block 12 are in the compressed state, the second threading hole 131 of the locking block 13 is adjacent to the hole opening of the base block 12, and is offset in the axial direction from the first threading hole 121 of the base block 12 adjacent to the hole opening of the locking block 13; when the suture 10 is cut by the shear block 14, as shown in fig. 4, the second threading hole 131 of the lock block 13 abuts against the opening of the shear block 14, and abuts against the opening of the lock block 13 with the third threading hole 142 of the shear block 14, and there is an offset in the axial direction, because of the offset, the second threading hole 131 of the lock block 13 abuts against the opening of the shear block 14 and the third threading hole 142 of the shear block 14 abuts against the opening of the lock block 13, when the shear block 14 is in threaded engagement with the lock cylinder 11, the shear block 14 and the lock block 13 are relatively close, and the second threading hole 131 of the lock block 13 abuts against the opening of the shear block 14 and the third threading hole 142 of the shear block 14 abuts against the opening of the lock block 13, so as to generate a shearing force on the suture 10, and the suture 10 is cut, as shown in fig. 4.
Alternatively, in fig. 5, at least one base block hole 16 is provided on the base block 12, at least one fixing pin 15 is inserted into the base block hole 16 and fixed, the fixing pin 15 sequentially passes through guide holes provided in the lock block 13 and the shear block 14, and the guide holes are in clearance fit with the fixing pin 15 and used for guiding the engagement of the lock block 13 and the base block 12 and the engagement of the lock block 13 and the shear block 14.
In a preferred embodiment, the base block 12 and the lock cylinder 11 form a first annular gap, the lock block 13 and the lock cylinder 11 form a second annular gap, and the gap value of the second annular gap is larger than that of the first annular gap, so that the lock block 13 has enough lateral movement to compress the suture 10 and fix one end of the suture 10, and when a pre-tightening force is applied to the suture 10, the tension of the suture 10 does not act on a surgical component implanted in the body, such as an anchor, and the stress of the suture 10 is transferred to the locking and shearing component 1 and is completely isolated from the patient body, thereby reducing the falling suture of the surgical component, and a higher pre-tightening force can be applied to the suture 10 with one end fixed, and the thread breaking efficiency of the suture 10 is increased.
In a preferred embodiment, referring to fig. 3, the engaging structure is formed as a curved engaging structure, the curved engaging structure includes a concave surface and a convex surface, the concave surface can be disposed at one end of the lock block 13 or the base block 12, and the convex surface is disposed at one end of the base block 12 or the lock block 13 corresponding to the concave surface, so that the contact area of the suture thread 10 with the base block 12 and the lock block 13 is increased by the curved engaging structure of the concave surface and the convex surface, and the suture thread 10 is compressed between the base block 12 and the lock block 13 with a relatively small pressure. In other embodiments, the engagement structure may have a generally "Z" shaped configuration as shown in FIG. 6, or a zigzag bend configuration, and other shapes may be used to facilitate increasing the path of suture 10 at the location where lock block 13 and base block 12 contact.
As shown in fig. 7, the threading holes provided in the lock block 13 and the scissors block 14 are obliquely arranged, and preferably, the threading holes provided in the lock block 13 and the scissors block 14 may also be arranged in a curved shape, so as to increase the threading path of the suture thread 10 in the lock block 13 and the scissors block 14.
Referring to fig. 3-4, the lock-scissors integrated device is applied to mitral valve repair, and the method of using the lock-scissors integrated device of the present invention will be described in detail:
after the mitral valve repair is completed, performing thread breakage treatment on the suture thread 10, firstly controlling a cable retracting device connected to the cable 2, wherein the cable retracting device is a conventional cable retracting device in the field, and the lead screw is used for withdrawing and extending the cable 2 and is not shown; at this time, the key cylinder 11 connected to the cable 2 is axially moved in a direction in which the cable 2 is drawn out, the key cylinder 11 moves the base block 12, the first inclined surface 120 of the base block 12 contacts the corresponding inclined surface of the lock block 13, the first inclined surface 120 applies a force F1 to the lock block 13, the second inclined surface 140 of the shear block 14 contacts the corresponding inclined surface of the lock block 13, the second inclined surface 140 applies a force F2 to the lock block 13, the lock block 13 is laterally moved by the resultant force of the two, and the suture thread 10 is pressed from the first thread hole 121 of the base block 12 to the second thread hole 131 of the lock block 13, so that one end of the suture thread 10 is fixed.
At this time, a certain pre-tightening force is applied to the suture line 10, then the cable 2 is controlled by the through hole to rotate by the through hole control cable retracting device, so as to drive the lock cylinder 11 to rotate, the external thread 110 of the lock cylinder 11 is matched and screwed with the internal thread 141 of the shear block 14, during the process of screwing the lock cylinder 11, the lock block 13 and the base block 12 are close to the shear block 14 along the axial direction through the matching of the internal thread 141 and the external thread 110, so that the pressing force between the lock block 13 and the base block 12 is further improved, at the same time, the lock block 13 is close to the shear block 14 along the axial direction through the matching of the internal thread 141 and the external thread 110, because the second threading hole 131 of the lock block 13 is adjacent to the orifice of the shear block 14 and the orifice of the third threading hole 142 of the shear block 14 is adjacent to the lock block 13, a certain offset is provided in the axial direction, the second threading hole 131 of the lock block 13 is adjacent to the orifice of the shear block 14 and the orifice of the shear block 13, so as to generate a shearing force to the suture line 10, and the shearing efficiency of the suture line 10 is improved; the cable 2 is then controlled to disconnect from the lock cylinder 11, the cable 2 is withdrawn and the anchorage of one end of the suture 10 is achieved by means of the lock shear member 1.
The specific operation method of the locking and shearing integrated device comprises the steps of compressing and shearing the surgical suture 10, realizing the movement of the single lock cylinder 11 by controlling the cable retracting device, and realizing the compression and the shearing of the surgical suture 10, and has the advantages of simple operation, integration of locking and shearing, and no need of step-by-step operation; the problem that the thread is cut in advance due to the fact that whether the thread is locked or not cannot be confirmed in vivo is avoided, and the operation risk is reduced. Meanwhile, the lock-shear integrated device is simple in structural design and few in part number, can well meet the operation requirement of a long and narrow operation space, and is particularly suitable for line shearing operation of intervention type operations.
Claims (7)
1. A lock-shear integrated device, comprising a lock-shear member (1) and a cable (2), characterized in that: the lock shear component (1) comprises a lock cylinder (11), a base block (12), a lock block (13) and a shear block (14), the lock cylinder (11) is in a bolt shape, and sequentially passes through the base block (12), the locking block (13) and the shearing block (14) to be connected with the cable (2), the base block (12), the locking block (13) and the shear block (14) are all provided with through holes, an internal thread (141) is formed in the through hole of the shear block (14), the lock cylinder (11) is formed with an external thread (110) which is engaged with the internal thread (141), threading holes are arranged at the positions of the base block (12), the locking block (13) and the shear block (14) deviating from the through holes respectively, the suture threads are threaded through the threading holes of the base block (12), the locking block (13) and the shear block (14) respectively, one end of the base block (12) which is contacted with the locking block (13) is formed into a matching structure, when the lock block (13) is contacted with the base block (12), the route from the suture line to the second threading hole (131) of the lock block (13) through the first threading hole (121) of the base block (12) is larger than the linear distance from the orifice of the first threading hole (121) of the base block (12) adjacent to the lock block (13) to the orifice of the second threading hole (131) of the lock block (13) adjacent to the base block (12); a first inclined plane (120) is arranged on the base block (12), a second inclined plane (140) is arranged on the shear block (14), inclined planes with the same inclination angle as the first inclined plane (120) and the second inclined plane (140) are arranged at two ends of the lock block (13) corresponding to the first inclined plane (120) and the second inclined plane (140), and the first inclination angle of the first inclined plane (120) to the horizontal direction is larger than the second inclination angle of the second inclined plane (140) to the horizontal direction;
the diameters of the through holes of the base block (12) and the locking block (13) are larger than the diameter of the through hole of the shear block (14);
when the shearing block (14) is utilized to shear a suture, the second threading hole (131) of the locking block (13) is adjacent to the hole of the shearing block (14) and the third threading hole (142) of the shearing block (14) is adjacent to the hole of the locking block (13) and has a certain offset in the axial direction, and the second threading hole (131) of the locking block (13) is adjacent to the hole of the shearing block (14) and the third threading hole (142) of the shearing block (14) are adjacent to the hole of the locking block (13) and are tangent due to the offset.
2. A lock-shear integrated device according to claim 1, wherein the through holes of the base block (12) and the lock block (13) are provided at substantially central positions thereof, and the through holes of the shear block (14) correspond to the through holes of the base block (12) and the lock block (13).
3. The lock-shear integrated device according to claim 1, wherein when the lock block (13) and the base block (12) are in a compressed state, the second threading hole (131) of the lock block (13) is arranged in an offset manner in the axial direction adjacent to the orifice of the base block (12) and the first threading hole (121) of the base block (12) adjacent to the orifice of the lock block (13).
4. A lock and shear integrated device according to claim 1, wherein at least one fixing pin (15) is arranged on the base block (12), and the fixing pin (15) sequentially passes through guide holes arranged on the lock block (13) and the shear block (14), and the guide holes are in clearance fit with the fixing pin (15).
5. The lock-shear integrated device according to claim 1, wherein the base block (12) and the lock cylinder (11) form a first annular gap, and the lock block (13) and the lock cylinder (11) form a second annular gap, and the gap value of the second annular gap is larger than that of the first annular gap.
6. A lock and shear integrated device according to claim 1, wherein the matching structure is formed as a curved matching structure, the curved matching structure comprises a concave surface and a convex surface, the concave surface can be arranged at one end of the lock block (13) or the base block (12), and the convex surface is arranged at one end of the base block (12) or the lock block (13) corresponding to the concave surface.
7. A lock and shear integrated device according to claim 5, wherein the second threading hole (131) and the third threading hole (142) are obliquely arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211168998.7A CN115227308B (en) | 2022-09-26 | 2022-09-26 | Lock and shear integrated device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211168998.7A CN115227308B (en) | 2022-09-26 | 2022-09-26 | Lock and shear integrated device |
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| CN115227308A CN115227308A (en) | 2022-10-25 |
| CN115227308B true CN115227308B (en) | 2022-12-02 |
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| CN116172754B (en) * | 2023-04-28 | 2023-07-14 | 科瑞迈吉(北京)医疗科技有限公司 | Surgical thread locker and thread locker handle |
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| CN110313951A (en) * | 2018-03-28 | 2019-10-11 | 杭州德晋医疗科技有限公司 | Suture lock and suture lock clone system |
| CN113616379A (en) * | 2020-05-08 | 2021-11-09 | 杭州德晋医疗科技有限公司 | Suture locking and cutting device and suture locking and cutting system |
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| US8109968B2 (en) * | 2003-05-07 | 2012-02-07 | Anpa Medical, Inc. | Suture lock |
| US20070027457A1 (en) * | 2005-07-18 | 2007-02-01 | Walborn Carol M | Band blade suture remover apparatus and method |
| CN101313862A (en) * | 2008-07-03 | 2008-12-03 | 华斌 | Blindness type suture cutter |
| US20120165836A1 (en) * | 2010-12-23 | 2012-06-28 | Rosenhan Branden D | Safety suture cutting device and method |
| US9980719B2 (en) * | 2013-03-12 | 2018-05-29 | St. Jude Medical Puerto Rico Llc | Non-invasive suture cutter and related methods for cutting a suture below the skin |
| US9247935B2 (en) * | 2013-09-23 | 2016-02-02 | Ceterix Orthopaedics, Inc. | Arthroscopic knot pusher and suture cutter |
| CN104706391B (en) * | 2015-03-26 | 2017-06-20 | 诺琅医疗科技（上海）有限公司 | A kind of pad locking conduit that can cut suture |
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| CN113491547A (en) * | 2020-03-20 | 2021-10-12 | 杭州德晋医疗科技有限公司 | Forward-pushing releasing type suture locking device |
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| CN110313951A (en) * | 2018-03-28 | 2019-10-11 | 杭州德晋医疗科技有限公司 | Suture lock and suture lock clone system |
| CN113616379A (en) * | 2020-05-08 | 2021-11-09 | 杭州德晋医疗科技有限公司 | Suture locking and cutting device and suture locking and cutting system |
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Address after: 201207 3rd floor, building 1, 400 Fangchun Road, Pudong New Area, Shanghai Patentee after: Shanghai Huihe Medical Instrument Co.,Ltd. Patentee after: Shanghai Huihe Medical Technology Co.,Ltd. Address before: 201207 3rd floor, building 1, 400 Fangchun Road, Pudong New Area, Shanghai Patentee before: Shanghai Huihe Medical Instrument Co.,Ltd. Patentee before: Shanghai Huihe Medical Technology Co.,Ltd. |
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