Suture cutting and securing device

Abstract

The utility model discloses a kind of suture cutting wire fixing devices, including handle portion, outer sheath tube assembly and fixed suit that are sequentially connected;The outer sheath tube assembly includes outer sheath tube and guide wire;The guide wire is set in outer sheath tube, the front end of the guide wire is detachably connected with fixed suit, the rear end of the guide wire is fixedly connected with handle portion, handle portion is used to pull guide wire along the length direction of the outer sheath tube;Open is equipped on the lateral wall of the outer sheath tube;The fixed suit includes detachably connected first fixed suit and second fixed suit, the first fixed suit is detachably connected with outer sheath tube front end, and the middle part of first fixed suit is equipped with the cavity for guide wire to pass through;The second fixed suit is detachably connected with the front end of guide wire;Suture passes through between first fixed suit and second fixed suit.The utility model provides a kind of safe, reliable, can fix suture, and avoid suture to separate from the suture cutting wire fixing device of tissue.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating 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, which reduce stomach volume to decrease nutrient absorption. However, it is estimated that less than 1% of morbidly obese patients are suitable candidates for these procedures, primarily due to the high cost and, more importantly, the high incidence of complications and adverse events.

[0003] During surgery, wound suturing and fixation are often necessary. Common suturing methods include push knots, tying knots, or tightening. However, the stomach wall is composed of multiple layers of tissue, including the mucosa, submucosa, muscularis propria, and serosa, each with varying strengths and elasticities. The mucosa, in particular, is relatively fragile and easily damaged. If the knot is tied too tightly or the tension is unevenly distributed, the suture may detach from the tissue, leading to suture failure. Failed suturing can result in complications such as local ischemia or necrosis, making the surgery relatively high-risk.

[0004] Patent CN115886907B discloses an integrated suture pushing and cutting device for a vascular suture suture applicator. This device has two functions: pushing and cutting the suture. It is equipped with a guide head for pushing the suture and a cutter for squeezing and cutting the suture. Although integrating pushing and cutting increases the convenience of surgical operation, the suture is prone to detachment from the tissue and suture failure because it still relies on pushing or tightening the suture.

[0005] Therefore, there is an urgent need for a safe and reliable suture suturing device that can fix the suture and prevent it from detaching from the tissue. Utility Model Content

[0006] To address the aforementioned technical problems, improve upon existing suture fixation methods, and enhance surgical suture stability, this invention achieves its purpose through the following solution: A suture cutting and fixing device, the suture cutting and fixing device comprising: a handle portion, an outer sheath assembly and a fixing kit connected in sequence; The outer sheath assembly includes an outer sheath and a guide wire; the guide wire is disposed inside the outer sheath, the front end of the guide wire is detachably connected to the fixing kit, the rear end of the guide wire is fixedly connected to the handle, and the handle is used to pull the guide wire along the length of the outer sheath; the outer sheath has an opening on its side wall; The fixing kit includes a first fixing kit and a second fixing kit that are detachably connected. The first fixing kit is detachably connected to the front end of the outer sheath tube, and the first fixing kit has a cavity in the middle for the guide wire to pass through. The second fixing kit is detachably connected to the front end of the guide wire. The suture passes between the first fixing kit and the second fixing kit.

[0007] Furthermore, in the initial position, when the first and second fastening kits are in a separated state, the suture passes through the gap between the first and second fastening kits.

[0008] Furthermore, when the first fixing kit is inserted and fixed to the second fixing kit, and the second fixing kit is threaded onto the first fixing kit, the suture is clamped and fixed.

[0009] Furthermore, when the suture is clamped and fixed, the remaining portion of the suture end can be removed or cut through the opening on the outer sheath.

[0010] Furthermore, the fixation assembly consisting of the first fixation kit, the second fixation kit, and the suture comes into contact with the sutured tissue.

[0011] Furthermore, a hook device is also provided on the outer side of the outer sheath.

[0012] Furthermore, the suture hooking device is detachably connected to the outside of the outer sheath. This detachable connection allows for the replacement of different types of suture hooking devices according to the surgical needs of different patients, thus improving the applicability and operational comfort of the equipment, and increasing operational efficiency.

[0013] Furthermore, the hooking device includes a base and a hook coil, one end of which is connected to the base, and the other end is provided with a hooking part.

[0014] Preferably, the base can be a fixing ring, which is sleeved on the outer sheath.

[0015] More preferably, the base can be fitted onto the outer sheath using a snap-fit ​​structure.

[0016] Preferably, the hook portion can be configured as a ring, a hook shape, or a clip shape to hold the thread to be sewn.

[0017] Preferably, after the stitching operation is completed, a storage groove can be provided on the handle to store the stitching device. Preferably, the hook device after use can be fixed to the surface of the handle using a fastener.

[0018] Furthermore, the outer sheath is provided with a cutting element.

[0019] Preferably, the cutting element adopts a tubular structure. The tubular cutting element is not only suitable for structural requirements, but also reduces the weight of the entire device compared to solid or flat materials, and has better bending and torsional resistance when subjected to external pressure.

[0020] Furthermore, a cutting hole is provided on the side wall of the cutting component, and the cutting hole corresponds to the opening on the side wall of the outer sheath.

[0021] Furthermore, the cutting hole is positioned directly opposite the side wall opening on the outer sheath, and the two are connected.

[0022] Furthermore, the opening edge of the cutting hole is configured as a cutting edge.

[0023] Furthermore, the guide wire is provided with a protrusion, and the bottom of the cutting piece is provided with a hole for the guide wire to pass through.

[0024] Furthermore, the diameter of the protrusion is greater than the diameter of the bottom hole of the cutter and less than the diameter of the cavity in the middle of the first fixing kit.

[0025] Preferably, the diameter of the protrusion is greater than the diameter of the bottom hole of the cutting element and smaller than the inner diameter of the outer sheath.

[0026] Furthermore, when the protrusion on the guide wire comes into contact with the cutting component, the first fixing kit and the second fixing kit clamp and fix the suture. Pulling the guide wire backward again causes the guide wire to move the cutting component to cut the suture, while simultaneously separating the second fixing kit from the front end of the guide wire.

[0027] Preferably, when the first fixing kit is separated from the second fixing kit, there is a certain distance between the protrusion and the hole at the bottom of the cutting element.

[0028] Furthermore, the handle is also provided with a pressing device, which is connected to the rear end of the guide wire and is used to pull the guide wire along the length of the outer sheath.

[0029] Preferably, the guide ribbon drives the second fixing kit to move along the length of the outer sheath toward the first fixing kit.

[0030] Preferably, controlling the movement of the guide wire by pressing the device not only improves the accuracy and convenience of operation, but also enhances the overall safety and reliability of the device.

[0031] Furthermore, the pressing device includes a button, which is slidably connected to the handle portion and fixedly connected to the rear end of the guide wire.

[0032] Preferably, when the button is in the initial position, the cutting hole on the cutter is aligned with the side wall opening.

[0033] Furthermore, an elastic element is provided between the button and the handle portion, and the elastic element is used to drive the button to reset.

[0034] Preferably, the elastic element is a spring.

[0035] Furthermore, the springs connect the button and the handle respectively, making the button and the handle elastically connected. The springs apply elastic force to the button, causing the button to tend to return to its initial position.

[0036] Furthermore, the second fixing kit is interference-fitted with the guide wire.

[0037] During the dynamic adaptation process, the interference fit between the second fixing kit and the guide wire ensures close contact between the two, avoids or reduces loosening or slippage, and ensures a strong and stable connection between them.

[0038] Furthermore, the first fixing kit is made of a flexible material.

[0039] Preferably, the elastic material is soft and more comfortable when in contact with the human body, and provides good cushioning when the first fastening kit comes into contact with the human body.

[0040] Meanwhile, the first fixing kit, made of elastic material, can automatically adjust the clamping force according to the degree of insertion of the second kit, ensuring a stable connection and effectively preventing the components from loosening due to vibration or external forces during use.

[0041] Furthermore, the hooking device enters through the opening on the side wall of the outer sheath, passes through the gap between the first fixing kit and the second fixing kit, and passes through the opening on the side wall, the cutting hole, the cutting piece, and the opening at the end of the outer sheath.

[0042] Furthermore, one end of the suture after puncture is fixed to the tissue, and the other end of the suture passes through the gap between the first fixation kit and the second fixation kit.

[0043] Furthermore, the hooking part of the hooking coil on the hooking device passes through the gap between the first fixing kit and the second fixing kit to hook the sewing thread located in the gap.

[0044] Furthermore, the suture thread is pulled out from the cutting hole on the cutting piece and the opening on the side wall of the outer sheath.

[0045] This utility model discloses a suture cutting and fixing device. The pressing device on the handle controls the guide ribbon to move the second fixing kit along the length of the outer sheath towards the first fixing kit, so that the second fixing kit is inserted into the first fixing kit. The suture is clamped and fixed by the insertion and fixing of the first fixing kit and the second fixing kit; at the same time, the fixing component composed of the first fixing kit, the second fixing kit and the suture comes into contact with the sutured tissue.

[0046] Compared with the prior art, the beneficial effects of this utility model include: 1) This utility model provides a suture cutting and fixing device, which uses a fixing method of inserting a first fixing kit and a second fixing kit to clamp and fix the end of the suture, so as to avoid the phenomenon of suture failure due to the suture cutting detaching from the tissue; At the same time, the clamped and fixed suture, the first fixation kit and the second fixation kit come into contact with the sutured tissue, making the suture part more stable and reliable.

[0047] 2) This utility model provides a suture cutting and fixing device. By setting an opening on the side wall of the outer sheath tube and setting a cutting element inside that corresponds to the opening, the suture extending from the side wall opening can be directly cut. Using the same device to fix and cut the suture not only ensures the accuracy of the cutting position, but also simplifies the operation steps and improves the safety of the operation. Attached Figure Description

[0048] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a suture cutting and fixing device according to the present invention; Figure 2 for Figure 1 A partial sectional view of region II; Figure 3 for Figure 1 Partial sectional view of the middle handle section; Figure 4 for Figure 1 Schematic diagram of the hook line device; Figure 5 This is a schematic diagram showing the sutures after they have been fixed and cut. Figure 6 A flowchart illustrating the process of fixing sutures.

[0049] The reference numerals in the figure are as follows: 10-tangential fixation device, 110-handle part, 111-pressing device, 120-outer sheath tube, 121-side wall opening, 130-cutting element, 131-hole for guide wire to pass through, 132-cutting hole, 140-guide wire, 141-guide wire tip, 142-protrusion, 151-first fixation kit, 152-second fixation kit, 160-hooking device, 161-base, 1611-clamping part, 162-hooking coil, 1621-hooking part, 181-puncture head, 182-suture, A-stomach wall. Detailed Implementation

[0050] The present invention will be further described below with reference to the accompanying drawings and embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0051] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] like Figure 1 As shown, this utility model provides a suture cutting and fixing device, the suture cutting and fixing device 10 includes: a handle part, an outer sheath assembly and a fixing kit connected in sequence; The outer sheath assembly includes an outer sheath 120 and a guide wire 140; the guide wire 140 is disposed inside the outer sheath 120, the front end 141 of the guide wire is detachably connected to the fixing kit, and the rear end of the guide wire 140 is fixedly connected to the handle portion 110, the handle portion 110 being used to pull the guide wire along the length direction of the outer sheath 120; an opening 121 is provided on the side wall of the outer sheath; The fixing kit includes a first fixing kit 151 and a second fixing kit 152 that are detachably connected. The first fixing kit 151 is detachably connected to the front end of the outer sheath tube 120, and the first fixing kit 151 has a cavity in the middle for the guide wire 140 to pass through. The second fixing kit 152 is detachably connected to the front end of the guide wire 141. The suture passes between the first fixing kit 151 and the second fixing kit 152.

[0054] A hooking device 160 is also provided on the outside of the outer sheath tube 120; the hooking device 160 is detachably connected to the outside of the outer sheath tube 120. The hooking device 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 hooking part 1621.

[0055] The outer sheath 120 is provided with a cutting element 130, and a cutting hole 132 is formed on the side wall of the cutting element 130, which corresponds to the opening 121 on the side wall of the outer sheath; the opening edge of the cutting hole 132 is set as a cutting blade. The guide wire 140 is also provided with a protrusion 142, and the bottom of the cutting element 130 is provided with a hole 131 for the guide wire to pass through. The diameter of the protrusion 142 is larger than the diameter of the hole and smaller than the diameter of the cavity in the middle of the first fixing kit 151.

[0056] like Figure 3 As shown, a pressing device 111 is also provided on the handle portion 110. The pressing device 111 is connected to the rear end of the guide wire 140 and is used to pull the guide wire 140 along the length direction of the outer sheath tube 120. The pressing device 111 includes a button, which is slidably connected to the handle portion 110 and fixedly connected to the rear end of the guide wire 140. An elastic element is provided between the button and the handle portion 110.

[0057] The second fixing kit 152 is interference-fitted with the guide wire 140. The first fixing kit 151 is made of a flexible material.

[0058] To better understand the technical solution of this utility model, specific implementation examples are selected below to illustrate the operation process of the suture cutting and fixing device of this utility model.

[0059] Example 1

[0060] like Figure 2 As shown, in the initial position, the suture cutting and fixing device 10 of this utility model has the first fixing component 151 located at the front end of the outer sheath tube 120, and the second fixing component 152 located at the front end 141 of the guide wire; the first fixing component 151 and the second fixing component 152 are separated, with a gap between them for the suture to pass through. At this time, the cutting hole 132 on the cutting member 130 is directly opposite to and connected to the side wall opening 121. The hook portion 1621 on the hook coil 162 of the hooking device 160 enters from the side wall opening 121 of the outer sheath tube, passes through the cutting hole 132, the end opening of the outer sheath tube 120, and exits through the gap between the first fixing component 151 and the second fixing component 152.

[0061] like Figure 4 As shown, in this embodiment, the hook device 160 is fixed to the outer side of the outer sheath tube 120 by a snap-fit ​​connection. The base 161 of the hook device 160 is provided with a snap-fit ​​portion 1611, which includes two clamping protrusions. The two clamping protrusions respectively press against opposite sides of the outer sheath tube 120, thereby clamping the outer sheath tube 120 to achieve overall fixation of the base 161. In this embodiment, the hook portion 1621 adopts a ring design and is formed by wire winding to ensure the extensibility of the hook coil 162.

[0062] The following are specific methods for suturing the stomach wall and for fixing and cutting the sutures using the device of this invention: 1) Suture the stomach wall A and fix one end of the suture. like Figure 5 As shown, the suture includes a puncture head 181 and a suture 182; firstly, the stomach wall A is sutured with the suture using an interventional suturing instrument (not shown in the figure), and the suture is then inserted into the stomach wall A; The puncture head 181 is driven by an interventional suturing instrument to puncture the stomach wall A. One end of the suture 182 is connected to the middle of the puncture head 181. The puncture head 181 passes through the underlying tissue layer along a predetermined path and is sutured. After the puncture head 181 is completed, the puncture head 181, as a fixator for one end of the suture, rotates 90° and abuts against the stomach wall A, thereby fixing one end of the suture to the tissue.

[0063] 2) Fixation and cutting of sutures after A-line suture of the stomach wall like Figure 6 As shown, the other end of the sewing thread is fixed using the sewing thread cutting and fixing device 10 provided in this utility model; First, in the initial position, the hook portion 1621 of the hook coil 162 on the hook device 160 is located in the gap between the first fixing component 151 and the second fixing component 152; the hook portion 1621 hooks the end of the suture 182 located there; the hook coil 162 returns along the original path, and the end of the suture 182 passes through the gap between the first fixing component 151 and the second fixing component 152 through the outer sheath end opening, the cutter 130, the cut hole 132, and out through the side wall opening 121, so that one end of the suture 182 reaches the predetermined fixed position; The first fixation kit is brought into contact with the suture tissue. The guide wire 140 is controlled by the button on the handle 110. The guide wire 140 drives the second fixation kit 152 to move along the length of the outer sheath 120 toward the first fixation kit 151, so that the second fixation kit 152 is inserted into the first fixation kit 151. The first fixation kit 151 and the second fixation kit 152 are inserted and fixed, thereby clamping and fixing the suture 182. Press the button again to control the guide wire 140 to pull back further, so that the second fixing kit 152 separates from the front end of the guide wire 140; at the same time, the protrusion 142 abuts against the cutting part 130, and the remaining suture is cut through the cutting blade at the opening of the cutting hole 132, cutting off the excess part of the suture 182 extending out of the side wall of the outer sheath. Finally, the first fixation kit 151 is separated from the end of the outer sheath tube 120, so that the fixation assembly consisting of the first fixation kit 151, the second fixation kit 152 and the suture abuts against the gastric wall A tissue, thereby completing the clamping, fixation and cutting of the suture tangent.

[0064] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A suture cutting and fixing device, characterized in that, The suture cutting and fixing device includes: a handle, an outer sheath assembly, and a fixing kit connected in sequence; The outer sheath assembly includes an outer sheath and a guide wire; the guide wire is disposed inside the outer sheath, the front end of the guide wire is detachably connected to the fixing kit, the rear end of the guide wire is fixedly connected to the handle, and the handle is used to pull the guide wire along the length of the outer sheath; the outer sheath has an opening on its side wall; The fixing kit includes a first fixing kit and a second fixing kit that are detachably connected. The first fixing kit is detachably connected to the front end of the outer sheath tube, and the first fixing kit has a cavity in the middle for the guide wire to pass through. The second fixing kit is detachably connected to the front end of the guide wire. The suture passes between the first fixing kit and the second fixing kit.

2. The suture cutting and fixing device according to claim 1, characterized in that... The outer sheath is also provided with a hook device; the hook device is detachably connected to the outer side of the outer sheath.

3. The suture cutting and fixing device according to claim 2, characterized in that... The hooking device 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 hooking part.

4. The suture cutting and fixing device according to claim 1, characterized in that, The outer sheath is provided with a cutting element, and a cutting hole is provided on the side wall of the cutting element, which corresponds to the opening on the side wall of the outer sheath; the opening edge of the cutting hole is set as a cutting blade.

5. The suture cutting and fixing device according to claim 1, characterized in that, The guide wire is also provided with a protrusion, and the bottom of the cutting component is provided with a hole for the guide wire to pass through. The diameter of the protrusion is larger than the diameter of the hole and smaller than the diameter of the cavity in the middle of the first fixing kit.

6. The suture cutting and fixing device according to claim 1, characterized in that, The handle is also provided with a pressing device, which is connected to the rear end of the guide wire and is used to pull the guide wire along the length of the outer sheath.

7. The suture cutting and fixing device according to claim 6, characterized in that, The pressing device includes a button, which is slidably connected to the handle portion and fixedly connected to the rear end of the guide wire.

8. The suture cutting and fixing device according to claim 7, characterized in that, An elastic element is provided between the button and the handle.

9. The suture cutting and fixing device according to claim 1, characterized in that, The second fixing kit is interference-fitted with the guide wire.

10. The suture cutting and fixing device according to claim 1, characterized in that, The first fixing kit is made of a flexible material.

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