Knot pushing and thread cutting device
By designing a push knot tangent, the knot tangent rod and rotary cut-out sheath are used to knot and cut sutures, which solves the problem of frequent instrument replacement during laparoscopic surgery and improves surgical efficiency and simplicity of operation.
Patent Information
- Application Number
- CN202420923486.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-04-29
AI Technical Summary
During laparoscopic surgery, frequent replacement of instruments is required for knotting and cutting of sutures, which increases the difficulty and operation time and reduces the efficiency of the operation.
A push knot tangent is designed, including a push knot rod and a rotary cutting outer sheath, which has threading holes for knotting of sutures. The rotary cutting outer sheath realizes the cutting of the sutures by moving the rotary cutting edge along the axial direction of the rod body.
The knotting and cutting of sutures is achieved at one time, without the need to replace the instrument, simple operation, shortening the surgical time and improving the surgical efficiency.
Smart Images
Figure CN222942377U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to a knot pusher and wire cutter. Background Art
[0002] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present disclosure, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to those skilled in the art.
[0003] As patients are more satisfied with the aesthetic healing of incisions after surgery and the improvement of non-invasive surgical treatment techniques, laparoscopes and hysteroscopes have been widely used in gynecological surgeries. Some laparoscopic surgeries require suturing, knotting and cutting of sutures. Currently, laparoscopic knot pushers are used to tie knots on sutures, and then laparoscopic scissors are replaced to cut the sutures. This increases the frequency of instrument replacement, and there is a cross-chopstick effect when using laparoscopic scissors, which makes the operation difficult, thereby increasing the operation time and reducing the efficiency of the operation. Utility Model Content
[0004] In view of this, the purpose of the present application is to provide a knot pusher and cutter, which aims to solve the technical problem that the current laparoscopic surgery needs to replace laparoscopic scissors for cutting operations, which increases the frequency of instrument replacement and the difficulty of operation.
[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:
[0006] An embodiment of the present application provides a knot pusher and a wire cutter, comprising:
[0007] A knot-pushing rod, comprising a rod body, a knot-pushing head and a top cap, wherein one end of the knot-pushing head is connected to one end of the rod body, and one end of the knot-pushing head away from the rod body is connected to the top cap, and a threading hole is provided on the top cap, and the threading hole is used to thread a suture;
[0008] A rotary cutting outer sheath is rotatably sleeved on the outer peripheral side of the rod body and can move along the axial direction of the rod body. The length of the rod body is greater than the length of the rotary cutting outer sheath. The rotary cutting outer sheath is provided with a rotary cutting edge at one end facing the top cap, and the rotary cutting edge is connected to the interior of the rotary cutting outer sheath.
[0009] When the rotary cutting outer sheath moves to a preset position along the axial direction of the rod body, the edge of the rotary cutting blade is in line contact with a side of the top cap facing the rod body.
[0010] In one embodiment, an outer circumferential side of the rod body is provided with an external thread, and an inner wall of the rotary cut outer sheath is provided with an internal thread adapted to the external thread, so that the rotary cut outer sheath is threadedly connected to the rod body;
[0011] When the rotary cutting sheath is rotated, the rotary cutting sheath can move along the axial direction of the rod body.
[0012] In one embodiment, the top cap includes a threading portion and a limiting portion that are connected to each other, the threading portion is connected to an end of the push-knot head away from the rod body, and the threading hole is provided on the threading portion, and the limiting portion protrudes from the outer peripheral side of the rotary cutting outer sheath along the radial direction of the rod body.
[0013] In one embodiment, one end of the limiting portion away from the threading portion is defined as an arc-shaped surface; and / or
[0014] One end of the threading portion away from the limiting portion defines an arc-shaped surface.
[0015] In one of the embodiments, an arc-shaped avoidance opening is provided on the outer peripheral side of the push knot head, and is connected to the top cap in an arc-shaped transition through the arc-shaped avoidance opening, and the arc-shaped avoidance opening is connected to the threading hole for avoiding the suture line.
[0016] In one embodiment, the knot pusher cutter further comprises a handle for hand holding, the handle is located at an end of the rod body away from the top cap and connected to the rod body, and anti-slip grooves are arranged along the outer circumference of the handle.
[0017] In one embodiment, the knot pusher and thread cutter further comprises a rotary cutting operating member, and the rotary cutting operating member is disposed on the outer peripheral side of an end of the rotary cutting outer sheath away from the top cap.
[0018] In one embodiment, the rotary cutting operating member includes a plurality of cylindrical bodies, and the plurality of cylindrical bodies are arranged at intervals along the outer circumference of the rotary cutting outer sheath.
[0019] In one embodiment, the threading hole is arranged to be inclined relative to the axial direction of the rod body.
[0020] In one embodiment, the rod body, the knot-pushing head and the top cap are integrally formed to form the knot-pushing rod.
[0021] The beneficial effects of this application are:
[0022] When using the knot pusher provided by the present application, the medical staff operates the knot pusher rod to tie a knot on the suture threaded through the threading hole, and then operates the rotary cutting outer sheath to move it along the axial direction of the rod body and rotate it relative to the rod body until the edge of the rotary cutting blade contacts the top cap wire, at which time the suture is cut off under the rotation and extrusion of the edge of the rotary cutting blade. In this process, the suture knotting and cutting actions can be completed at one time without changing the instrument, and the operation is simple, thereby shortening the operation time and improving the operation efficiency.
[0023] In order to make the above-mentioned objects, features and advantages of the present application more obvious and understandable, preferred embodiments are given below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 A schematic structural diagram of a knot pusher and thread cutter in some embodiments of the present application is shown in a state where a suture thread is inserted;
[0026] Figure 2 Shows Figure 1 Schematic diagram of the enlarged structure of area A in the middle.
[0027] Description of main component symbols:
[0028] 100-knot pusher and thread cutter; 110-knot pusher rod; 111-rod body; 112-knot pusher head; 1121-arc-shaped avoidance opening; 113-top cap; 1131-threading part; 11311-threading hole; 1132-limiting part; 11321-arc-shaped surface; 120-rotary cutting outer sheath; 121-rotary cutting blade; 130-handle; 131-anti-slip pattern; 140-rotary cutting operating part; 141-column; 200-suture thread. DETAILED DESCRIPTION
[0029] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0032] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0033] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0034] like Figure 1 As shown, an embodiment of the present application provides a knot pusher and thread cutter 100, which relates to the technical field of medical devices and is mainly used to complete the knotting and cutting of sutures 200 under laparoscopy, hysteroscopy and other laparoscopic conditions.
[0035] like Figure 1 and Figure 2 As shown, the knot-pushing thread cutter 100 provided in this embodiment includes: a knot-pushing rod 110 and a rotary cutting outer sheath 120 .
[0036] Among them, the knot-pushing rod 110 includes a rod body 111, a knot-pushing head 112 and a top cap 113. One end of the knot-pushing head 112 is connected to one end of the rod body 111, and the end of the knot-pushing head 112 away from the rod body 111 is connected to the top cap 113. The top cap 113 is provided with a threading hole 11311 passing through it, and the threading hole 11311 is used to thread the suture thread 200.
[0037] The rotary cutting outer sheath 120 is rotatably mounted on the outer peripheral side of the rod body 111 and can move axially along the rod body 111. The length of the rod body 111 is greater than the length of the rotary cutting outer sheath 120. A rotary cutting blade 121 is provided at one end of the rotary cutting outer sheath 120 facing the top cap 113, and the rotary cutting blade 121 is connected to the interior of the rotary cutting outer sheath 120.
[0038] When the rotary cutting outer sheath 120 moves to a preset position along the axial direction of the rod body 111 , the edge of the rotary cutting blade 121 makes linear contact with a side of the top cap 113 facing the rod body 111 .
[0039] It should be noted that one end of the push knot 112 is connected to one end of the rod body 111, and the end of the push knot 112 away from the rod body 111 is connected to the top cap 113, so that the push knot 112 is connected between the rod body 111 and the top cap 113. The length of the rod body 111 is greater than the length of the rotary sheath 120, so that the medical staff can hold the rod body 111.
[0040] It should be mentioned that some laparoscopic surgeries require suturing, knotting and cutting of sutures. Currently, a laparoscopic knot pusher is used to tie the sutures, and then laparoscopic scissors are replaced to cut the sutures. This increases the frequency of instrument replacement, and there is a chopstick cross effect when using laparoscopic scissors, which makes the operation difficult, thereby increasing the operation time and reducing the surgical efficiency.
[0041] It is understandable that when using the knot pusher and thread cutter 100 provided in this embodiment, the medical staff operates the knot pusher rod 110 to tie a knot on the suture 200 passing through the threading hole 11311, and then operates the rotary sheath 120 to move along the axial direction of the rod body 111 and rotate relative to the rod body 111 until the edge of the rotary cutting blade 121 contacts the top cap 113 line, and the suture 200 is cut off under the rotation and extrusion of the edge of the rotary cutting blade 121. In this process, the knotting and cutting actions of the suture 200 can be completed at one time, without the need to change instruments and with simple operation, thereby shortening the operation time and improving the efficiency of laparoscopic surgery.
[0042] In one embodiment, an outer circumferential side of the rod body 111 is provided with an external thread, and an inner wall of the rotary cutting sheath 120 is provided with an internal thread adapted to the external thread, so that the rotary cutting sheath 120 is threadedly connected to the rod body 111 .
[0043] In this embodiment, due to the setting of the external thread and the internal thread, a threaded connection, that is, a threaded connection, is achieved between the rotary sheath 120 and the rod body 111. In this way, when the rotary sheath 120 is rotated, the rotary sheath 120 can move axially along the rod body 111.
[0044] It can be understood that the above-mentioned threaded connection method has a more stable structure, so that the rotary cutting outer sheath 120 can stably move along the axial direction of the rod body 111 and rotate relative to the rod body 111 at the same time, so as to better perform the tangential action.
[0045] In another embodiment, there is a gap between the inner wall of the rotary cutting sheath 120 and the outer peripheral side of the rod body 111 to achieve clearance fit between the rotary cutting sheath 120 and the rod body 111 .
[0046] In this embodiment, since there is a clearance fit between the rotary sheath 120 and the rod body 111, the rotary sheath 120 can also move along the axial direction of the rod body 111 and can rotate relative to the rod body 111 to meet the needs of tangential action.
[0047] like Figure 2 As shown, in one embodiment, the top cap 113 includes a threading portion 1131 and a limiting portion 1132 that are connected to each other, the threading portion 1131 is connected to an end of the push-knot head 112 away from the rod body 111, and a threading hole 11311 is provided on the threading portion 1131, and the limiting portion 1132 protrudes from the outer peripheral side of the rotary cut outer sheath 120 along the radial direction of the rod body 111.
[0048] In this embodiment, since the limiting portion 1132 protrudes from the outer peripheral side of the rotary cutting sheath 120 along the radial direction of the rod body 111, the size of the limiting portion 1132 is larger than the radial size of the rotary cutting sheath 120. This not only cooperates with the edge of the rotary cutting blade 121 to jointly rotary cut the suture thread 200, but also prevents the rotary cutting sheath 120 from slipping from the top cap 113 and damaging surrounding organs and tissues during the rotary cutting process of the suture thread 200.
[0049] like Figure 2 As shown, in a specific embodiment, one end of the limiting portion 1132 away from the threading portion 1131 defines an arc-shaped surface 11321 .
[0050] In this embodiment, the limiting portion 1132 having the arc surface 11321 reduces the sharpness of the top cap 113, thereby reducing the risk of the top cap 113 damaging human organs and tissues during the use of the knot pusher and wire cutter 100.
[0051] In another specific embodiment, one end of the threading portion 1131 away from the limiting portion 1132 defines an arc-shaped surface 11321 .
[0052] In this embodiment, the threading portion 1131 having the arcuate surface 11321 reduces the sharpness of the top cap 113, thereby reducing the risk of damaging human organs and tissues during use of the knot pusher and wire cutter 100.
[0053] In yet another specific embodiment, one end of the limiting portion 1132 away from the threading portion 1131 and one end of the threading portion 1131 away from the limiting portion 1132 are both defined as an arc-shaped surface 11321 .
[0054] In this embodiment, both the limiting portion 1132 and the threading portion 1131 have an arcuate surface 11321, which can reduce the sharpness of the top cap 113 to a greater extent, thereby more effectively reducing the risk of damaging human organs and tissues during use of the knot pusher and wire cutter 100.
[0055] like Figure 2 As shown, in one embodiment, an arc-shaped avoidance opening 1121 is provided on the outer peripheral side of the push knot head 112, and is connected to the top cap 113 in an arc-shaped transition through the arc-shaped avoidance opening 1121. The arc-shaped avoidance opening 1121 is connected to the threading hole 11311 for avoiding the suture thread 200.
[0056] In this embodiment, since the push-knot head 112 is connected to the top cap 113 in an arc-shaped transition through the arc-shaped avoidance opening 1121, and the arc-shaped avoidance opening 1121 can avoid the suture 200, it is convenient to thread the suture 200 through the threading hole 11311 during laparoscopic surgery, thereby facilitating subsequent knotting and cutting operations.
[0057] like Figure 1 As shown, in one embodiment, the knot pusher 100 also includes a handle 130 for hand holding, the handle 130 is located at one end of the rod body 111 away from the top cap 113 and is connected to the rod body 111, and anti-slip grooves 131 are arranged along the outer peripheral side of the handle 130 (the structure of the anti-slip grooves 131 is not shown in the drawings).
[0058] In this embodiment, since a handle 130 with anti-slip grooves 131 is provided at one end of the rod body 111 away from the top cap 113 , it is convenient for medical personnel to hold the rod body 111 to support it, thereby facilitating knotting and cutting of the suture thread 200 .
[0059] Of course, for the above embodiment, the handle 130 may not be added, and the medical staff may directly hold the portion of the rod body 111 away from the top cap 113 , and can also perform knotting and cutting operations of the suture thread 200 .
[0060] In addition, the anti-slip pattern 131 may also be provided on the outer peripheral side of the rotary cut outer sheath 120 and the outer peripheral side of the rod body 111 , and may be provided specifically according to design requirements, and no specific restrictions are imposed on the application scenarios of the anti-slip pattern 131 .
[0061] like Figure 1As shown, in one embodiment, the knot pusher 100 further includes a rotary cutting operating member 140, which is disposed on the outer peripheral side of the rotary cutting outer sheath 120 away from the top cap 113 for manual operation.
[0062] In this embodiment, by setting a rotary cutting operating part 140 on the outer peripheral side of the end of the rotary cutting outer sheath 120 away from the top cap 113, the medical staff can control the rotary cutting outer sheath 120 to move axially along the rod body 111 and rotate relative to the rod body 111 through the rotary cutting operating part 140, which is convenient for the medical staff's hand operation and reduces the difficulty of rotary cutting the suture thread 200.
[0063] like Figure 1 As shown, further, the rotary cutting operating member 140 includes a plurality of columnar bodies 141 , and the plurality of columnar bodies 141 are arranged at intervals along the outer circumference of the rotary cutting outer sheath 120 .
[0064] For example, the number of the columnar bodies 141 can be two, three, four, five, etc., which can be set according to design requirements. In addition, the columnar body 141 can be further a cylinder, a prism, etc., and the type of the columnar body 141 is not specifically limited here.
[0065] In this embodiment, a plurality of cylindrical bodies 141 are arranged at intervals along the outer circumference of the rotary sheath 120 , so that medical personnel can operate the rotary sheath 120 conveniently, so that the rotary sheath 120 moves along the axial direction of the rod body 111 and rotates relative to the rod body 111 .
[0066] Of course, for the above embodiment, the rotary cutting operating member 140 can also be a knob with anti-slip grooves 131, and the knob is sleeved on the outer peripheral side of the rotary cutting outer sheath 120, which is also convenient for medical personnel to operate and reduces the difficulty of using the knot pusher cleaver 100.
[0067] like Figure 2 As shown, in one embodiment, the threading hole 11311 is arranged to be inclined relative to the axial direction of the rod body 111.
[0068] In this embodiment, the difficulty of threading the suture 200 can be reduced by the oblique arrangement of the threading holes 11311, making it easier for the suture 200 to be threaded through the threading holes 11311, so as to facilitate knotting and thread cutting, thereby shortening the operation time.
[0069] like Figure 2 As shown, in one embodiment, the rod body 111 , the knot-pushing head 112 and the top cap 113 are integrally formed to form the knot-pushing rod 110 .
[0070] In this embodiment, since the knot-pushing rod 110 is formed in one piece, the structural strength of the knot-pushing rod 110 is increased, thereby extending the service life of the knot-pushing wire cutter 100.
[0071] Furthermore, the knot pusher rod 110 and the rotary cutting sheath 120 are both made of stainless steel to meet the requirements of the moist environment of the abdominal cavity. No rust will be generated during use, thereby reducing the risk of infection caused by the use of the knot pusher and wire cutter 100.
[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A knot pusher cutter, characterized in that: include: A knot-pushing rod (110) comprises a rod body (111), a knot-pushing head (112) and a top cap (113), wherein one end of the knot-pushing head (112) is connected to one end of the rod body (111), and one end of the knot-pushing head (112) away from the rod body (111) is connected to the top cap (113), and the top cap (113) is provided with a threading hole (11311) passing through the top cap (113), and the threading hole (11311) is used for threading a suture (200); A rotary cutting outer sheath (120) is rotatably sleeved on the outer peripheral side of the rod body (111) and is capable of moving along the axial direction of the rod body (111); the length of the rod body (111) is greater than the length of the rotary cutting outer sheath (120); a rotary cutting blade (121) is provided at one end of the rotary cutting outer sheath (120) facing the top cap (113); and the rotary cutting blade (121) is connected to the interior of the rotary cutting outer sheath (120); When the rotary cutting outer sheath (120) moves to a preset position along the axial direction of the rod body (111), the edge of the rotary cutting blade (121) is in linear contact with a side of the top cap (113) facing the rod body (111).
2. The knot pusher cutter according to claim 1, characterized in that: The outer peripheral side of the rod body (111) is provided with an external thread, and the inner wall of the rotary cutting outer sheath (120) is provided with an internal thread adapted to the external thread, so that the rotary cutting outer sheath (120) is threadedly connected to the rod body (111); When the rotary cutting outer sheath (120) is rotated, the rotary cutting outer sheath (120) can move along the axial direction of the rod body (111).
3. The knot pusher cutter according to claim 1, characterized in that: The top cap (113) includes a threading portion (1131) and a limiting portion (1132) connected to each other, the threading portion (1131) is connected to an end of the push-knot head (112) away from the rod body (111), and the threading hole (11311) is provided on the threading portion (1131), and the limiting portion (1132) protrudes from the outer peripheral side of the rotary cutting outer sheath (120) along the radial direction of the rod body (111).
4. The knot pusher cutter according to claim 3, characterized in that: An end of the limiting portion (1132) away from the threading portion (1131) defines an arc-shaped surface (11321); and / or One end of the threading portion (1131) away from the limiting portion (1132) defines an arc-shaped surface (11321).
5. The knot pusher cutter according to claim 1, characterized in that: The outer peripheral side of the push knot head (112) is provided with an arc-shaped avoidance opening (1121), and is connected to the top cap (113) in an arc-shaped transition through the arc-shaped avoidance opening (1121). The arc-shaped avoidance opening (1121) is connected to the threading hole (11311) for avoiding the suture thread (200).
6. The knot pusher cutter according to any one of claims 1 to 5, characterized in that: The knot pusher cutter further comprises a handle (130) for holding by hand, wherein the handle (130) is located at an end of the rod body (111) away from the top cap (113) and is connected to the rod body (111), and anti-slip grooves (131) are arranged along the outer peripheral side of the handle (130).
7. The knot pusher cutter according to any one of claims 1 to 5, characterized in that: The knot pusher and thread cutter further comprises a rotary cutting operating member (140), wherein the rotary cutting operating member (140) is arranged on the outer peripheral side of an end of the rotary cutting outer sheath (120) away from the top cap (113).
8. The knot pusher cutter according to claim 7, characterized in that: The rotary cutting operating member (140) includes a plurality of columnar bodies (141), and the plurality of columnar bodies (141) are arranged at intervals along the outer circumference of the rotary cutting outer sheath (120).
9. The knot pusher cutter according to any one of claims 1 to 5, characterized in that: The threading hole (11311) is arranged to be inclined relative to the axial direction of the rod body (111).
10. The knot pusher cutter according to any one of claims 1 to 5, characterized in that: The rod body (111), the knot-pushing head (112) and the top cap (113) are integrally formed to form the knot-pushing rod (110).