CN219331760U - Knot pushing and thread cutting device - Google Patents

Abstract

The application relates to a knot pushing and trimming device, comprising: the end part, the first pipe body, the second pipe body and the cutter pipe. The end part is provided with an inner cavity, a lead channel is formed in the end part along the axial direction of the end part, and the lead channel is formed in the inner cavity; the first pipe body is rotationally sleeved in the inner cavity, and a first notch is formed in the pipe wall of the first pipe body; the second pipe body is rotatably sleeved outside the first pipe body and connected with the end part; when the first notch rotates to be in a superposition state with the lead channel, the suture thread can be penetrated out of the lead channel in a radial falling manner through the first notch; when the first notch rotates to be in a dislocation state with the lead channel, at least part of the pipe wall of the first pipe body is used for blocking the suture line from penetrating out of the lead channel along the radial direction; the knife tube is rotatably sleeved between the first tube body and the second tube body, and is configured to move in the lead channel and to be matched with the cavity wall of the inner cavity to cut off the suture line. Can be suitable for the suture cutting operation of long-distance in-vivo suture lines.

Description

Knot pushing and thread cutting device

Technical Field

The application relates to the technical field of medical surgery, in particular to a knot pushing and trimming device.

Background

At present, the thread trimmer is mainly used as a handheld operating system for various suture and thread trimming in the body, and is an advanced structural device. The existing wire cutters cannot perform long-distance wire cutting operation in human body, for example: it cannot directly act on the right/left atrial region of the human body. In addition, the existing wire cutters often have the phenomenon of intravascular bleeding during application, or have the problem that sutures fall out of a cutting area when the instrument enters the body.

In view of this, there is a need for a wire clipper of a novel structure that can solve the above-described problems.

Disclosure of Invention

In view of the above, the present application provides a knot clipper that is intended to prevent a suture from falling out of a clipping region when an instrument is entered into the body.

The application provides a knot pushing and trimming device, comprising: the end part, the first pipe body, the second pipe body and the cutter pipe. The end part is provided with an inner cavity, a lead channel is formed in the end part along the axial direction of the end part, and the lead channel is communicated with the inner cavity; the first pipe body is rotationally sleeved in the inner cavity, and a first notch is formed in the pipe wall of the first pipe body; the second pipe body is rotationally sleeved outside the first pipe body, and the second pipe body is connected with the end part; when the first notch rotates to be in a superposition state with the lead channel, the suture thread can be penetrated out of the lead channel in a radial falling manner through the first notch; when the first notch rotates to be in a dislocation state with the lead channel, at least part of the pipe wall of the first pipe body is used for blocking the suture line from penetrating out of the lead channel along the radial direction; the knife tube is rotatably sleeved between the first tube body and the second tube body, and is configured to move in the inner cavity and be matched with the cavity wall of the inner cavity to cut off the suture line.

In the technical scheme of this application embodiment, second body and tip relative fixed connection, first body can rotate in the second body along self axis, and the sword pipe can rotate between first body and second body along self axis. Before the knot pushing and thread trimming is carried out, the first notch of the first tube body is in a superposition state with the lead channel at the moment, a suture thread connected with the knot in the surgical body outside the body is penetrated into the lead channel, and then the first tube body is rotated to enable the first notch and the lead channel to be in a dislocation state, so that the suture thread cannot fall off through the lead channel. And then the end part, the first tube body and the second tube body which are penetrated with the suture thread are penetrated into the human body through the blood vessel until the suture thread enters the right/left atrium area and other positions with the thread knot to perform the thread cutting operation, so as to finish long-distance thread cutting.

In some embodiments, the end is configured as a solid of revolution and the distal end of the end is configured as a face structure.

In some embodiments, the knot clipper further comprises a handle and a housing, the housing is mounted at the proximal end of the second tube, the handle is located at the proximal end of the housing, a first groove is arranged on the second tube at a position for connecting with the handle, a protruding block is arranged on the housing, and the protruding block is in sliding fit with the first groove; the first groove comprises a first path section extending along the axial direction and a second path section extending along the circumferential direction, and when the convex block slides to the second path section, the second pipe body rotates and is positioned to a preset position.

In some embodiments, a resilient abutment member is provided between the handle and the first tube; the elastic abutment member includes: the connecting portion, the one end of connecting portion is constructed with the second recess, the other end of connecting portion is constructed with protruding structure, connecting portion passes through the second recess cover is located the outside of first body, connecting portion protruding structure overcoat is equipped with the spring, the one end butt of spring in the inside wall of handle, the other end butt of spring in protruding structure with the lateral wall that connecting portion are connected.

In some embodiments, the cutter tube includes a third tube body proximate the proximal end and a blade formed at the distal end of the third tube body; a blade knob is arranged in the shell and fixedly sleeved on the outer wall of the third pipe body; still be provided with connection structure in the shell, connection structure cover is located third body outer wall, the proximal end of blade knob with connection structure's distal end threaded connection, so that the blade knob is relative when connection structure removes, can drive third body synchronous movement.

In some embodiments, the connection structure has a clearance groove therein for movement of the third tube; the inner side wall of the clearance groove is used for blocking the third pipe body from continuously retracting inwards, the inner side wall of the inner cavity of the end part is used for blocking the blade from continuously retracting outwards, and the inner side wall of the inner cavity is in friction with the blade in a matched mode so as to be used for shearing the suture line.

In some embodiments, the knot clipper further comprises a locking knob that is sleeved between the housing and the third tube in a radial direction, the locking knob being located between the blade knob and the end in an axial direction, the locking knob being capable of locking or unlocking a position between the blade tube and the first tube.

In some embodiments, the housing is further provided with two connection holes for connecting a hemostatic valve;

in the position area where the components in the shell are communicated with the connecting holes, a gap structure for filling physiological saline is prefabricated between the corresponding third pipe body and the first pipe body and between the corresponding third pipe body and the second pipe body.

In some embodiments, a second notch is formed in the outer wall of the second tube body, and the second notch is communicated with the lead channel.

In some embodiments, the first notch is through the distal end of the first tube; the second notch is communicated with the distal end of the second tube body.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is a schematic diagram of a front view of a knot clipper according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of FIG. 1 along A-A according to one embodiment of the present application;

FIG. 3 is a schematic diagram showing an axial structure of a knot clipper according to an embodiment of the present application;

FIG. 4 is an enlarged schematic view of the end portion at B in FIG. 3 in accordance with one embodiment of the present application;

FIG. 5 is a schematic diagram of a broken structure of a first pipe according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a broken structure of a second pipe according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of a front view of a knot clipper according to an embodiment of the present application.

Reference numerals in the specific embodiments are as follows:

2. a knot pushing and trimming device; 11. an end portion; 12. a first tube body; 13. a second tube body; 14. a cutter tube; 15. a handle; 16. a housing; 17. a connection hole; 18. an elastic abutment member; 19. a blade knob; 20. a locking knob; 111. a lead path; 121. a first notch; 131. a second notch; 132. a first groove; 1321. a first path segment; 1322. a second path segment; 181. a connection part; 182. and (3) a spring.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In the prior art, when performing suture operations in the human body, a suture is often required to be sheared, however, various types of thread shearing devices applied in the prior art cannot perform long-distance thread shearing operations, for example: operation cannot be performed through the blood vessel into the heart region. Moreover, the existing wire cutters often have the problem that the suture thread is detached after the instrument enters the blood vessel. Based on the above, the application aims to provide a suture thread which can cut threads for a long distance and prevent the suture thread from falling off after the instrument enters a blood vessel, and the specific scheme is as follows:

referring to fig. 1-7, related structural diagrams of the recommendation thread trimmer are shown. The following describes the structure of the knot clipper of the present application with reference to the accompanying drawings.

Referring to fig. 1 and 2, a knot clipper 10 is provided for this application, comprising: an end 11, a first tube 12, a second tube 13 and a cutter tube 14. The end part 11 is provided with an inner cavity, the end part 11 is provided with a lead channel 111 along the axial direction of the end part, and the lead channel 111 is formed in the inner cavity; the first tube 12 is rotatably sleeved in the inner cavity, and referring to fig. 5, a first notch 121 is formed in the tube wall of the first tube 12; the second pipe body 13 is rotationally sleeved outside the first pipe body 12, and the second pipe body 13 is connected with the end part 11; when the first notch 121 rotates to be in a state of being overlapped with the lead channel 111, the suture thread can be penetrated out of the lead channel 111 in a radial falling manner through the first notch 121; when the first notch 121 rotates to be in a dislocation state with the lead channel 111, at least part of the pipe wall of the first pipe body 12 is used for blocking the suture from penetrating out of the lead channel 111 along the radial direction; the cutter tube 14 is rotatably sleeved between the first tube body 12 and the second tube body 13, and the cutter tube 14 is configured to be movable in the lead passage 111 and to be capable of cutting a suture in cooperation with a lumen wall of the lumen.

Illustratively, the end 11, the first tube 12, the second tube 13, and the cutter tube 14 are all of a solid of revolution.

For example, the lengths of the first tube 12, the second tube 13 and the cutter tube 14 may be set according to the needs of practical applications. Specifically, the application scene is taken as a basis.

For example, the shapes of the lead channel 111 and the first notch 121 are not limited in the present application, so long as the suture thread can be penetrated, and the first tube 12 can close the lead channel 111 after being rotated, so as to prevent the suture thread from falling off.

By adopting the knot pushing and trimming device 10, the second pipe body 13 is fixedly connected with the end part 11 relatively, the first pipe body 12 can rotate in the second pipe body 13 along the axis of the first pipe body, and the cutter pipe 14 can rotate between the first pipe body 12 and the second pipe body 13 along the axis of the first pipe body. Before the knot pushing and thread trimming is performed, the first notch 121 of the first tube body 12 is in a superposition state with the thread guiding channel 111, a suture thread connected with the knot in the surgical body outside the surgical body is penetrated into the thread guiding channel 111, and then the first tube body 12 is rotated to enable the first notch 121 and the thread guiding channel 111 to be in a dislocation state, so that the suture thread cannot fall off through the thread guiding channel 111. The suture thread-threaded end portion 11, the first tube body 12 and the second tube body 13 are then threaded into the human body through the blood vessel until the suture thread-threaded position such as the right/left atrium area is reached, and the suture thread cutting operation is performed to complete the long-distance suture thread cutting.

In an alternative embodiment of the present application, with further reference to fig. 4, the end 11 is configured as a solid of revolution, and the distal end of the end 11 is configured as a face structure, i.e., it is understood that the distal end of the end 11 is configured for direct contact with the knot, and the side in direct contact with the knot is configured as a face structure. By way of example, a planar structure is understood a shaped planar structure. When the knot clipper 10 reaches the position of the knot, the external handle 15 is pushed, so that the area structure directly pushes the knot, the knot can be locked, and the stability of the knot is further ensured.

The shape of the area structure of the surface of the end portion 11 is not limited, as long as a continuous planar structure can be molded. Under the pushing action of the continuous plane structure, the knots can be locked secondarily.

In an alternative embodiment of the present application, with further reference to fig. 7, the knot clipper 10 further comprises a handle 15 and a housing 16, the housing 16 being mounted to the proximal end of the second tube body 13, the proximal end being understood to be the side proximal to the handle 15, the opposite end being the distal end, the distal end being understood to be the side proximal to the end 11. The handle 15 is located at the proximal end of the housing 16, a first groove 132 is provided on the second tube 13 for connection to the handle 15, and a projection (not shown in the drawings) is provided on the housing 16, the projection slidably engaging the first groove 132; the first groove 132 includes a first path portion 1321 extending in the axial direction and a second path portion 1322 extending in the circumferential direction, and when the projection slides to the second path portion 1322, the second pipe 13 rotates and is positioned to a predetermined position.

For example, the first groove 132 of the present application may have an L-shaped structure, and two segments of the L-shaped structure correspond to the first path segment 1321 and the second path segment 1322, respectively.

Illustratively, the handle 15 and the housing 16 are each constructed as a solid of revolution. The shapes of the handle 15 and the housing 16 are not limited in this application.

The structure of the first groove 132 and the protruding block can drive the first tube 12 to rotate during the pressing and rotating process of the handle 15, thereby realizing the anti-falling effect of the suture line.

In an alternative embodiment of the present application, with further reference to fig. 2, a resilient abutment member 18 is provided between the handle 15 and the first tube body 12, the resilient abutment member 18 comprising: the connecting portion 181, the one end of connecting portion 181 is constructed with the second recess, and the other end of connecting portion 181 is constructed with protruding structure, and first body 12 is outside is located to the connecting portion 181 through the second recess cover, and protruding structure overcoat of connecting portion 181 is equipped with spring 182, and spring 182's one end butt is in the inside wall of handle 15, and spring 182's the other end butt is in the lateral wall that protruding structure and connecting portion 181 are connected. The structure of the connecting part 181 and the spring 182 can be applied to the installation in the limited space in the handle 15, and the structure is simple, the use is convenient, and the disassembly and the assembly are convenient. Further, the use of the resilient abutment member 18 enables a stable relative displacement between the handle 15 and the first tubular body 12, further ensuring the stability of the overall instrument.

The specific structure of the connection portion 181 is not limited, as long as the spring 182 can be stably sleeved and limited.

The connection portion 181 of the present application is sleeved outside the first pipe body 12, and can be understood as a relatively fixed connection between the two. To prevent the first pipe body 12 from shaking or shifting in the radial direction during rotation.

In an alternative embodiment of the present application, the cutter tube 14 includes a third tube body proximate the proximal end and a blade formed at the distal end of the third tube body; the blade knob 19 is arranged in the shell 16, the blade knob 19 is fixedly sleeved on the outer wall of the third pipe body, the connecting structure is also arranged in the shell 16 and sleeved on the outer wall of the third pipe body, and the proximal end of the blade knob 19 is in threaded connection with the distal end of the connecting structure, so that the third pipe body can be driven to synchronously move when the blade knob 19 moves relative to the connecting structure. With the above-described structure of the cutter tube 14, the structural strength of the cutter tube 14 can be ensured over a long distance.

Illustratively, the third body of the knife tube 14 of the present application is constructed as a solid structure.

Illustratively, the blade knob 19 of the present application may be selected from a knob of medical device material.

In an alternative embodiment of the present application, with further reference to fig. 2, the connection structure has a clearance groove therein for movement of the third tube; the inside wall of clearance recess is used for blocking the inside sword that continues of third body, and the inside wall of the inner chamber of tip 11 is used for blocking the outside sword that lasts of blade, and the inside wall and the blade cooperation friction of inner chamber are used for shearing the suture line.

In an alternative embodiment of the present application, with further reference to fig. 3 and 7, the knot clipper 10 further includes a locking knob 20, the locking knob 20 being sleeved between the housing 16 and the third tube body in the radial direction, the locking knob 20 being located between the blade knob 19 and the end 11 in the axial direction, the locking knob 20 being capable of locking or unlocking the position between the blade tube 14 and the first tube body 12. When the position of the blade is required to be adjusted, the locking knob 20 is loosened, and when the blade is adjusted to the required position, the locking knob 20 is screwed down. The position adjustment of the blade can be facilitated, and the blade can be ensured not to cut off the suture line by mistake in the process of the instrument entering the human body.

Illustratively, the locking knob 20 of the present application may be a knob of medical device material.

In an alternative embodiment of the present application, with further reference to fig. 1, the housing 16 is also provided with two connection holes 17 for connecting the hemostatic valve; in the position area where the parts in the housing 16 communicate with the respective connection holes 17, a gap structure for filling with physiological saline is prefabricated between the corresponding third tube body and the first tube body 12, and between the corresponding third tube body and the second tube body 13.

Illustratively, the connection hole 17 and the gap structure between the third tube body and the first tube body 12, and the connection hole 17 and the gap structure between the third tube body and the second tube body 13 are all communicated.

In an alternative embodiment of the present application, further referring to fig. 6, a second notch 131 is formed on the outer wall of the second tube body 13 and is in communication with the lead channel 111. The second notch 131 is provided to ensure that the lead channel 111 facilitates penetration of the suture.

In an alternative embodiment of the present application, further reference is made to fig. 5 and 6, wherein the first notch 121 is formed through the distal end of the first tube 12; the second notch 131 penetrates the distal end of the second tube 13. Such a structure is provided to facilitate communication with the lead passage 111 so that the external suture can smoothly pass through the lead passage 111.

For example, the first notch 121 and the second notch 131 may be regular or irregular, and the shapes of the first notch 121 and the second notch 131 are not limited in this application.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A knot clipper, comprising:

the end part is provided with an inner cavity, and is provided with a lead channel along the axial direction of the end part, and the lead channel is communicated with the inner cavity;

the first pipe body is rotationally sleeved in the inner cavity, and a first notch is formed in the pipe wall of the first pipe body;

the second pipe body is rotationally sleeved outside the first pipe body, and the second pipe body is connected with the end part;

when the first notch rotates to be in a superposition state with the lead channel, the suture thread can be penetrated out of the lead channel in a radial falling manner through the first notch;

when the first notch rotates to be in a dislocation state with the lead channel, at least part of the pipe wall of the first pipe body is used for blocking the suture line from penetrating out of the lead channel along the radial direction;

the knife tube is rotationally sleeved between the first tube body and the second tube body, and is configured to move in the inner cavity and be matched with the cavity wall of the inner cavity to cut off the suture line.

2. The knot clipper of claim 1, wherein the end is configured as a solid of revolution and the distal end of the end is configured as a face area structure.

3. The knot clipper of claim 1, further comprising a handle and a housing, the housing mounted to the proximal end of the second tube, the handle positioned at the proximal end of the housing, a first groove positioned on the second tube for connection to the handle, a tab positioned on the housing, the tab slidably engaging the first groove; the first groove comprises a first path section extending along the axial direction and a second path section extending along the circumferential direction, and when the convex block slides to the second path section, the second pipe body rotates and is positioned to a preset position.

4. A knot clipper according to claim 3, wherein an elastic abutment member is provided between the handle and the first tube body;

the elastic abutment member includes: the connecting portion, the one end of connecting portion is constructed with the second recess, the other end of connecting portion is constructed with protruding structure, connecting portion passes through the second recess cover is located the outside of first body, connecting portion protruding structure overcoat is equipped with the spring, the one end butt of spring in the inside wall of handle, the other end butt of spring in protruding structure with the lateral wall that connecting portion are connected.

5. The knot clipper of claim 3, wherein the blade tube comprises a third tube body proximate the proximal end and a blade formed at the distal end of the third tube body; a blade knob is arranged in the shell and fixedly sleeved on the outer wall of the third pipe body; still be provided with connection structure in the shell, connection structure cover is located third body outer wall, the proximal end of blade knob with connection structure's distal end threaded connection, so that the blade knob is relative when connection structure removes, can drive third body synchronous movement.

6. The knot clipper of claim 5, wherein the connection structure has a clearance groove therein for movement of the third tube; the inner side wall of the clearance groove is used for blocking the third pipe body from continuously retracting inwards, the inner side wall of the inner cavity of the end part is used for blocking the blade from continuously retracting outwards, and the inner side wall of the inner cavity is in friction with the blade in a matched mode so as to be used for shearing the suture line.

7. The knot clipper of claim 5, further comprising a locking knob radially nested between the housing and the third tube, the locking knob axially positioned between the blade knob and the end, the locking knob capable of locking or unlocking the position between the blade tube and the first tube.

8. The knot clipper of claim 5, wherein the housing is further provided with two connection holes for connecting a hemostatic valve;

in the position area where the components in the shell are communicated with the connecting holes, a gap structure for filling physiological saline is prefabricated between the corresponding third pipe body and the first pipe body and between the corresponding third pipe body and the second pipe body.

9. The knot clipper of claim 1, wherein the outer wall of the second tube body is provided with a second notch in communication with the lead channel.

10. The knot clipper of claim 9, wherein the first notch is through the distal end of the first tube; the second notch is communicated with the distal end of the second tube body.

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