Suture cutting and fixing device

Abstract

The utility model discloses a suture cutting and fixing device. The suture cutting fixing device comprises a handle and an outer sheath tube connected to the handle, and a cutting piece and a guide wire are arranged in the outer sheath tube; a side wall opening is formed in the side wall of the outer sheath tube, and the cutting piece is arranged corresponding to the side wall opening; the guide wire can move in the axis direction of the outer sheath tube, and the first end of the guide wire penetrates through the cutting piece and can be exposed out of the end opening of the outer sheath tube; a first fixing sleeve is arranged at the end of the outer sheath tube, a second fixing sleeve is arranged at the first end of the guide wire, a protruding part is arranged at the first end, and the second fixing sleeve is limited to the first end through the protruding part. The first fixing suite and the second fixing suite are arranged to be fixed in an inserting manner; one end of a suture to be cut is arranged to enter the outer sheath tube from a gap between the first fixing sleeve piece and the second fixing sleeve piece and extend out along the side wall opening; the guide wire is pulled to drive the cutting piece to cut off the suture to be cut.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a suture cutting and fixing device. Background Technology

[0002] Bariatric surgery has been proven to be a more effective method for obesity management than diet, exercise, and medication. Commonly used procedures include gastric bypass, sleeve gastrectomy, and adjustable gastric banding. However, it is estimated that less than 1% of morbidly obese patients are eligible for these procedures. This is due to factors such as high surgical costs and a higher incidence of complications or adverse events.

[0003] Patent (CN201780062729) discloses an endoscopic suturing system with an external instrument channel. This technology utilizes a suturing device to move a needle assembly that passes through tissue, and first and second devices associated with the suturing device. The needle assembly has a needle and suture. The first device receives and holds the needle, and the second device engages the tissue and pulls the tissue back into the needle's passage, allowing the tissue to be punctured as the needle moves from an open position to a closed position. In this technology, the needle and suture can be secured to the tissue by knotting or tightening, or the needle can be reset to engage with the needle arm. Additional suture loops can be formed in adjacent or other areas of the tissue. Knotting or tightening may cause the suture to detach from the tissue, resulting in suturing failure. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide a suture cutting and fixing device to solve the aforementioned technical problems.

[0005] To achieve the above objectives, one technical solution adopted in this application is: providing a suture cutting and fixing device, the suture cutting and fixing device comprising:

[0006] A handle and an outer sheath connected to the handle, wherein a cutting element and a guide wire are provided inside the outer sheath;

[0007] The outer sheath has a side wall opening, and the cutting element is provided corresponding to the side wall opening;

[0008] The guide wire is configured to move along the axial direction of the outer sheath, and a first end of the guide wire passes through the cutting element and is exposed at the end opening of the outer sheath.

[0009] The outer sheath tube has a first fixing sleeve at one end and a second fixing sleeve at the first end of the guide wire. The first end has a protrusion that defines the second fixing sleeve at the first end. The first fixing sleeve and the second fixing sleeve are designed to be pluggable for fixing.

[0010] One end of the suture to be cut is configured to enter the outer sheath through the gap between the first fixing kit and the second fixing kit and extend along the side wall opening; the first fixing kit and the second fixing kit are inserted and fixed by pulling the guide wire and the suture to be cut is clamped and fixed; after the guide wire moves a set distance, it can drive the cutting element to cut the suture to be cut.

[0011] Optionally, the protrusion is configured to drive the first fixing kit and the second fixing kit to be inserted and fixed when the guide wire is pulled a set distance; and after the first fixing kit and the second fixing kit are inserted and fixed, when the guide wire is pulled further, the protrusion can pass through the second fixing kit and abut against the cutting member, and drive the cutting member to cut the suture to be cut.

[0012] Optionally, the protrusion is a sphere or an ellipsoid, and the size of the protrusion is larger than the channel through which the guide wire passes through the cutting member.

[0013] Optionally, the cutting element is a tube, and a cutting hole is provided on the side wall of the tube. The cutting hole is provided corresponding to the opening of the side wall, and the opening edge of the cutting hole is set as a cutting blade.

[0014] Optionally, the suture cutting and fixing device further includes a hook assembly, which includes a base and a hook coil. One end of the hook coil is connected to the base, and the other end is provided with a hook portion. The hook portion is used to enter the outer sheath tube through the side wall opening and to pass through the gap between the first fixing kit and the second fixing kit to hook the suture to be cut.

[0015] Optionally, the hook portion is annular or hook-shaped; or

[0016] The hook part is a clamp used to hold the suture to be cut.

[0017] Optionally, the base is provided with a snap-fit ​​part, which snaps onto the outer wall of the outer sheath.

[0018] Optionally, the base can be detachably fixed to the outer wall of the outer sheath; or

[0019] The base is detachably fixed to the handle.

[0020] This application provides a suture cutting and fixing device. The suture cutting and fixing device provided by this application can clamp and fix a first fixing kit and a second fixing kit to the end of the suture to be cut, and the fixing assembly composed of the first fixing kit and the second fixing kit abuts against the tissue, thereby preventing the suture from detaching from the tissue and causing suture failure, and improving the reliability of suture suturing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an embodiment of a suture cutting and fixing device provided in this application;

[0022] Figure 2 yes Figure 1 A partial sectional view of the suture tangent fixing device shown in region II;

[0023] Figure 3 yes Figure 1 A partial sectional view of the handle position in the suture cutting and fixing device shown.

[0024] Figure 4 yes Figure 1 A three-dimensional structural diagram of the hook assembly in the suture cutting and fixing device shown.

[0025] Figure 5 Is adopted Figure 1 The diagram shows the suture cutting and fixing device fixing the suture and the suture after cutting.

[0026] Figure 6 Is adopted Figure 1 The diagram shows the process of fixing the suture using a suture cutting and fixing device. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] Please see Figures 1-3 , Figure 1 This is a schematic diagram of an embodiment of a suture cutting and fixing device provided in this application; Figure 2 yes Figure 1 A partial sectional view of the suture tangent fixing device shown in region II; Figure 3 yes Figure 1 A partial sectional view of the handle position in the suture cutting and fixing device shown.

[0034] The suture cutting and fixing device 10 includes a handle 110 and an outer sheath 120 connected to the handle 110. A cutting element 130 and a guide wire 140 are disposed inside the outer sheath 120. The outer sheath 120 has a sidewall opening 121, and the cutting element 130 is disposed corresponding to the sidewall opening 121. The guide wire 140 is configured to move along the axial direction of the outer sheath 120, and its first end 141 passes through the cutting element 130 and is exposed at the end opening of the outer sheath 130. A first fixing sleeve 151 is disposed at the end of the outer sheath 120, and a second fixing sleeve is disposed at the first end 141 of the guide wire 140. 152, a protrusion 142 is provided at the first end 141, the protrusion 142 defines the second fixing kit 152 at the first end 141; the first fixing kit 151 and the second fixing kit 152 are configured to be pluggable and fixed; one end of the suture to be cut is configured to enter the outer sheath tube 120 through the gap between the first fixing kit 151 and the second fixing kit 152 and extend along the side wall opening 121; by pulling the guide wire 140, the first fixing kit 151 and the second fixing kit 152 are plugged and fixed and the suture to be cut is clamped and fixed; after the guide wire 140 moves a set distance, it can drive the cutting member 130 to cut the suture to be cut.

[0035] Therefore, in this embodiment, by inserting the suture to be cut into the outer sheath tube 120 through the gap between the first fixing kit 151 and the second fixing kit 152, and extending it out from the side wall opening 121, the second fixing kit 152 can be moved toward the first fixing kit 151 by pulling back the guide wire 140, and finally the first fixing kit 151 and the second fixing kit 152 are inserted and fixed. At this time, the first fixing kit 151 and the second fixing kit 152 can clamp and fix the suture to be cut.

[0036] Furthermore, by further pulling the guide wire 140, the protrusion 142 on the first end 141 can pass through the second fixing kit 152 and separate from it, gradually moving to abut against the cutting member 130. This causes the cutting member 130 to move and cut the suture to be cut at the side wall opening 121. This achieves the fixation of the first fixing kit 151 and the second fixing kit 152 at the end of the suture to be cut, and allows for the removal of excess suture. In this embodiment, the first fixing kit 151 and the second fixing kit 152 fix the end of the suture to be cut, and the fixing assembly formed by the first fixing kit 151 and the second fixing kit 152 abuts against the tissue, preventing the suture from detaching from the tissue and causing suture failure, thus improving the reliability of suture suturing.

[0037] The protrusion 142 is located at the end of the first end 141 and is spherical or ellipsoidal. The size of the protrusion 142 is set slightly larger than the middle channel of the second fixing kit 152 (through which the first end 141 of the guide wire 140 passes) so that the protrusion 142 can enter and pass through the middle channel of the second fixing kit 152 under a set pulling force. The size of the protrusion 142 is also larger than the channel through which the guide wire 140 passes through the cutting member 130. That is, when the guide wire 140 is pulled back, the protrusion 142 can be engaged at the channel opening 131 of the cutting member 130, and can further drive the cutting member 130 to move along the axial direction of the outer sheath 120.

[0038] In this embodiment, the cutting component 130 is a tube, and a cutting hole 132 is provided on the side wall of the tube. The cutting hole 132 is set corresponding to the side wall opening 121, and the opening edge of the cutting hole 132 is set as a cutting blade. In this embodiment, when the cutting component 130 is in the initial position, the cutting hole 132 on the cutting component 130 is directly opposite to the side wall opening 121 and the two are connected. The suture to be cut can pass through the cutting hole 132 and the side wall opening 121 and then extend out from the position of the side wall opening 121. Therefore, by pulling back the guide wire 140, the cutting component 130 is driven to move, so that the cutting hole 132 and the side wall opening 121 can move relative to each other, and finally the suture to be cut is cut by the cutting blade at the opening position of the cutting hole 132.

[0039] For further details, please refer to Figure 2 and Figure 4 , Figure 4 yes Figure 1 A three-dimensional structural diagram of the hook assembly in the suture cutting and fixing device shown.

[0040] In this embodiment, the suture cutting and fixing device 10 further includes a hook assembly 160. The hook assembly 160 includes a base 161 and a hook coil 162. One end of the hook coil 162 is connected to the base 161, and the other end is provided with a hook part 1621. The hook part 1621 is used to enter the outer sheath tube 120 through the side wall opening 121 and pass through the gap between the first fixing kit 151 and the second fixing kit 152 to hook the suture to be cut. Then, by pulling back the hook part 1621, the suture to be cut can enter the end opening 122 of the outer sheath tube 120 from the gap between the first fixing kit 151 and the second fixing kit 152, and then pass through the cutting hole 132 and the side wall opening 121 on one side to exit the outer sheath tube 120.

[0041] The base 161 is detachably fixed to the outer wall of the outer sheath 120. The base 161 can be fitted onto the outer sheath 120 using a retaining ring, or it can be secured to the outer sheath 120 using a snap-fit ​​or similar structure. In some embodiments, the base 161 can also be fixedly mounted on the handle 110. For example, a storage groove can be provided on the handle 110 to store the hook assembly 160; alternatively, it can be fixed to the surface of the handle 110 using a fastener.

[0042] In this embodiment, a snap-fit ​​part 1611 is provided on the base 161. The snap-fit ​​part 1611 includes two clamping protrusions. The two clamping protrusions press against the opposite sides of the outer sheath tube 120 to clamp the outer sheath tube 120 and achieve overall fixation of the base 161.

[0043] The hook portion 1621 is either ring-shaped or hook-shaped; alternatively, the hook portion 1621 can be a clip to hold the thread to be cut. In this embodiment, the hook portion 1621 is preferably ring-shaped or hook-shaped, and it can be formed by winding to ensure the extensibility of the hook loop 162.

[0044] Please refer to section 3 for further information.

[0045] In this embodiment, a button 111 and an elastic element (not shown in the figure) are also provided on the handle portion 110. The button 111 is movably mounted on the end of the handle portion 110 and connected to the guide wire 140. Pressing or pulling the button 111 can drive the guide wire 140 to move.

[0046] The elastic element can connect the button 111 and the handle 110 respectively, so that the button 111 and the handle 110 are elastically connected. The elastic element can apply an elastic force to the button 111, so that the button 111 tends to return to the initial position. When the button 111 is in the initial position, the cutting hole 132 on the cutting element 130 is aligned with the side wall opening 121.

[0047] In one specific application scenario of this embodiment, the suture cutting and fixing device 10 can be used to fix and cut the sutures after suturing the stomach.

[0048] In this application scenario, please refer to Figure 5 , Figure 5 Is adopted Figure 1 The diagram shows the suture cutting and fixing device fixing the suture and the suture after cutting.

[0049] After suturing the stomach wall A using an interventional suturing instrument and suture, the suture can be inserted into the stomach wall A. The suture includes a puncture head 181 and a suture 182. The interventional suturing instrument can drive the puncture head 181 to puncture the stomach wall A. One end of the suture 182 is connected to the middle of the puncture head 181. After puncturing with the puncture head 181, the puncture head 181 can be rotated 180° to abut against the stomach wall A, and the puncture head 181 can also serve as a fixation element for one end of the suture 182. That is, at this point, only one end of the suture 182 at the puncture head 181 is fixed, while the other end of the suture 182 can be fixed and cut using the suture cutting and fixing device 10 described above.

[0050] For further details, please refer to Figure 6 , Figure 6 Is adopted Figure 1 The diagram shows the process of fixing the suture using a suture cutting and fixing device.

[0051] The hook coil 162 of the hook assembly 160 can enter the outer sheath tube 120 along the side wall opening 121 of the outer sheath tube 120, and the hook portion 1621 of the hook coil 162 can pass through the side wall opening 121, the cutting hole 132 and the end opening 122 of the outer sheath tube 120 in sequence, and then pass out through the gap between the first fixing kit 151 and the second fixing kit 152. The hook coil 162 can hook the other end of the suture 182.

[0052] Furthermore, since the hook loop 162 can return along the original path, the other end of the suture 182 can pass through the cutting hole 132 through the gap between the first fixing kit 151 and the second fixing kit 152, and then through the side wall opening 121 and out.

[0053] Then, the guide wire 140 is pulled back, which allows the second fixing kit 152 to be inserted into the first fixing kit 151 and clamps and fixes the other end of the suture 182. If the guide wire 140 is pulled back further, the protrusion 142 can pass through the middle channel of the second fixing kit 152 and separate from the second fixing kit 152.

[0054] As the guide wire 140 is pulled back further, the protrusion 142 abuts against the cutter 130, thereby causing the cutter 130 to cut off the excess portion of the other end of the suture 182. Then, the first fixing kit 151 is separated from the end of the outer sheath tube 120, so that the first fixing kit 151 and the second fixing kit 152 clamp and fix the other end of the suture 182.

[0055] In summary, this application provides a suture cutting and fixing device. The suture cutting and fixing device provided by this application can clamp and fix a first fixing kit and a second fixing kit to the end of the suture to be cut, and the fixing assembly composed of the first and second fixing kits abuts against the tissue, thereby preventing the suture from detaching from the tissue and causing suture failure, and improving the reliability of suture suturing.

[0056] The above embodiments are merely illustrative examples of this application and not all embodiments. This application may also be implemented in other specific ways or forms without departing from the spirit or essential characteristics of this application. Therefore, the described embodiments should be considered illustrative rather than limiting in any respect. The scope of this application should be defined by the appended claims, and any variations equivalent to the intent and scope of the claims should also be included within the scope of this application.

Claims

1. A suture cutting and securing device, characterized by, The suture cutting and fixing device comprises: a handle and an outer sheath connected to the handle, the outer sheath being provided with a cutting member and a guide wire inside; a side wall opening is formed on the side wall of the outer sheath, and the cutting member is arranged corresponding to the side wall opening; the guide wire is arranged to move along the axial direction of the outer sheath, and the first end of the guide wire penetrates through the cutting member and is exposed to the end opening of the outer sheath; wherein a first fixing sleeve is arranged at the end of the outer sheath, a second fixing sleeve is arranged at the first end of the guide wire, the first end is provided with a protrusion, and the protrusion limits the second fixing sleeve to the first end; the first fixing sleeve and the second fixing sleeve are arranged to be inserted and fixed; one end of the suture to be cut is arranged to enter the outer sheath from the gap between the first fixing sleeve and the second fixing sleeve and extend out of the side wall opening; the first fixing sleeve and the second fixing sleeve are inserted and fixed by pulling the guide wire, and the suture to be cut is clamped and fixed; after the guide wire moves a set distance, the cutting member can cut the suture to be cut.

2. The suture cutting and fixing device according to claim 1, wherein the protrusion is arranged to drive the first fixing sleeve and the second fixing sleeve to be inserted and fixed when the guide wire is pulled to move a set distance; and when the first fixing sleeve and the second fixing sleeve are inserted and fixed, the protrusion can abut against the cutting member after passing through the second fixing sleeve when the guide wire is continuously pulled, and the cutting member cuts the suture to be cut.

3. The suture cutting and fixing device according to claim 2, wherein the protrusion is a sphere or an ellipsoid, and the size of the protrusion is greater than the channel through which the guide wire penetrates the cutting member.

4. The suture cutting and fixing device according to claim 1, wherein the cutting member is a tube, a cutting hole is formed on the side wall of the tube, the cutting hole is arranged corresponding to the side wall opening, and the opening edge of the cutting hole is arranged as a cutting edge.

5. The suture cutting and fixing device according to any one of claims 1-4, further comprising a hooking assembly, the hooking assembly comprising a base and a hooking loop, one end of the hooking loop being connected to the base, and the other end being provided with a hooking part, the hooking part being used to enter the outer sheath from the side wall opening and pass out of the gap between the first fixing sleeve and the second fixing sleeve to hook the suture to be cut.

6. The suture cutting and fixing device according to claim 5, wherein the hooking part is annular or hook-shaped; or the hooking part is a clip to clamp the suture to be cut.

7. The suture cutting and fixing device according to claim 5, wherein the base is provided with a clamping part, and the clamping part is clamped to the outer wall of the outer sheath.

8. The suture cutting and fixing device according to claim 5, wherein the base is detachably fixed to the outer wall of the outer sheath; or ​ The base is detachably fixed to the handle.

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