Haemostatic forceps for suturing
By designing the blade channel of the suture hemostat and using a flexible suture needle, the difficulty of suturing bleeding points in vascular sidewall injuries under thoracoscopic surgery was solved, achieving a simple and efficient suturing operation and improving surgical safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN HONGAI HOSPITAL
- Filing Date
- 2025-01-08
- Publication Date
- 2026-05-08
AI Technical Summary
In thoracoscopic surgery, especially single-port thoracoscopic surgery, precise suturing of bleeding points caused by vascular sidewall damage is difficult, especially when the operating space is small or when the procedure is performed by a young surgeon. Furthermore, existing methods require multiple instruments that interfere with each other, affecting suturing efficiency and safety.
A suture hemostat was designed with closable blades and an internal channel, along with a flexible suture needle and an advancer. The suture needle can be bent and advanced through the blade channel, simplifying the suturing operation and avoiding interference from additional instruments.
This method enables simple and safe suturing of bleeding points on the lateral wall of blood vessels under thoracoscopic guidance, improving suturing efficiency and safety while avoiding interference from multiple instrument operations.
Smart Images
Figure CN224206864U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and more specifically to a suture hemostatic forceps. Background Technology
[0002] Vascular injury and bleeding are common during surgery, with lateral vessel wall injuries being particularly frequent. Two main methods of hemostasis are commonly used: one is to use titanium clips or Hom-Lock clips to block the bleeding vessel; the other is to suture and ligate the bleeding point, which is particularly suitable for bleeding points where vessel dissection and exposure are difficult. However, in thoracoscopic surgery, especially single-port thoracoscopic surgery, precise suturing is actually quite difficult due to interference between surgical instruments, especially in areas with limited operating space or when performed by a young surgeon, further increasing the difficulty of suturing.
[0003] In addition, for cases of significant bleeding, the bleeding point must first be clamped with hemostats to control the bleeding, and then the suture needle is held in place by a needle holder for suturing. However, because the hemostats are clamped at the bleeding site, they obstruct the suturing operation of the needle holder, making suturing very difficult. If the hemostats are released, blood will immediately overflow the bleeding point, making it impossible for the doctor to see the exact suture point and perform accurate suturing. Utility Model Content
[0004] The purpose of this invention is to provide a suture hemostat that is simple and convenient to use and can safely and efficiently suture bleeding points on the sidewalls of blood vessels.
[0005] To achieve the above objectives, this utility model provides a suture hemostatic forceps, including a handle, a body, and a mouthpiece. The mouthpiece has two closable blades, each with a channel inside. The channel extends forward from the outer side of the blade near the rear end to the tip of the blade. When the mouthpiece is closed, the channel openings at the tips of the two blades correspond to each other, and the channels in the two blades are interconnected, forming a U-shaped path within the mouthpiece.
[0006] Furthermore, it is equipped with a flexible suture needle. The end of the suture needle is combined with the suture thread. The suture needle enters from the channel of one of the clamp blades and passes through the channel opening at the tip of the two clamp blades before reaching the channel of the opposite clamp blade. The suture needle achieves a large angle bend when passing through the channel opening at the tip of the two clamp blades.
[0007] Furthermore, the channel forms an arc-shaped guide section at the tip of the blade, and the arc-shaped guide sections of the two blades are joined together to form a rotating section at the end of the U-shaped path.
[0008] Furthermore, it is equipped with a pusher for advancing the suture needle in the channel. The pusher includes an outer sleeve and a piston that can move within the outer sleeve. The tail end of the suture needle is inserted into the front end of the outer sleeve and presses against the front end of the piston. The suture needle is pushed out of the outer sleeve when the piston moves forward.
[0009] Furthermore, the diameter of the suture needle tip is 0.15mm, the suture needle length is 27mm, the suture is 4-0 absorbable or non-absorbable suture, the outer diameter of the outer sleeve is no more than 0.45mm, the inner diameter is 0.35mm, and the piston diameter is no more than 0.35mm.
[0010] Furthermore, the length of the portion of the piston placed inside the outer sleeve is less than the length of the outer sleeve, a baffle is provided at the tail of the outer sleeve, and a stop block is provided at the tail of the piston, with the stop block being blocked outside the baffle.
[0011] Furthermore, the width of the two blades gradually narrows forward and the front end curves upward.
[0012] Furthermore, the inner diameter of the channel is 0.45 mm.
[0013] Furthermore, the corresponding inner surfaces of the two pincers are serrated.
[0014] Furthermore, the suture hemostat is a double-jointed forceps with a sliding plate structure between the handle and the body.
[0015] With the above solution, when using the suture hemostat of this utility model, first clamp the jaws at the bleeding point. After the bleeding stops, the suture needle with suture thread is pushed into the channel near the rear end of one of the jaws through the channel provided on the jaw blades. Since the channels at the tips of the two jaw blades are connected at this time, the suture needle can be smoothly bent in the opposite direction in the U-shaped channel and enter the channel of the other jaw blade. The suture needle is further pushed in, so that most of the needle body enters the channel of the other jaw blade without affecting the smooth opening of the jaws. Then the jaws are opened and the suture hemostat is moved away from the blood vessel, so that the two ends of the suture thread pass out from the two ends of the bleeding point. Then the connection between the suture thread and the suture needle is cut and the two ends of the suture thread are tied, thus completing the suturing of one bleeding point.
[0016] Therefore, this utility model is simple and convenient to operate, and can complete the operation without the need for additional vascular clamps, avoiding the mutual interference caused by the need for multiple instruments in conventional suturing and hemostasis, and greatly improving the safety of suturing and hemostasis. Attached Figure Description
[0017] Figure 1 This is a top view of the structural schematic diagram of this utility model.
[0018] Figure 2 This is a side view of the structural schematic diagram of this utility model.
[0019] Figure 3 for Figure 1 Enlarged diagram of the jaws.
[0020] Figure 4 for Figure 1 Schematic diagram of the cross-section of the jaws.
[0021] Figure 5 This is a schematic diagram of the structure of the propeller combined with the suture needle and suture thread of this utility model.
[0022] Figure 6 This is a top-section view of the pusher of this utility model pushing the suture needle and suture into a clamping blade channel.
[0023] Figure 7 This is a side view of the pusher of this utility model pushing the suture needle and suture into a clamping blade channel.
[0024] Figure 8 for Figure 6 A top-view cross-section view showing the suture needle being further pushed into another clamp blade channel after the clamp jaws are closed.
[0025] Figure 9 for Figure 8 A diagram showing the jaws of the clamp open in this state.
[0026] Figure 10 This utility model is illustrated in a top-down view of the process of suturing a bleeding point on the side wall of a blood vessel. Figure 1 .
[0027] Figure 11 A top-view cross-sectional view of the process of suturing a bleeding point on the side wall of a blood vessel, according to this utility model. Figure 2 (profile).
[0028] Figure 12 A top-view cross-sectional view of the process of suturing a bleeding point on the side wall of a blood vessel, according to this utility model. Figure 3 (profile).
[0029] Figure 13 A top-view cross-sectional view of the process of suturing a bleeding point on the side wall of a blood vessel, according to this utility model. Figure 4 (profile).
[0030] Figure 14 A top-view cross-sectional view of the process of suturing a bleeding point on the side wall of a blood vessel, according to this utility model. Figure 5 (profile).
[0031] Figure 15 A top-view cross-sectional view of the process of suturing a bleeding point on the side wall of a blood vessel, according to this utility model. Figure 6 (profile).
[0032] Figure 16 A top-view cross-sectional view of the process of suturing a bleeding point on the side wall of a blood vessel, according to this utility model. Figure 7 (profile).
[0033] Figure 17 An enlarged schematic diagram of the thruster entering the first channel to advance the suture needle.
[0034] Explanation of icon numbers:
[0035] 10. Jaw; 1. First Jaw Blade; 11. First Channel; 111. First Channel Opening; 112. First Connecting Interface; 113. First Arc-Shaped Guide Section; 2. Second Jaw Blade; 21. Second Channel; 211. Second Channel Opening; 212. Second Connecting Interface; 213. Second Arc-Shaped Guide Section; a. Rotary Section;
[0036] 3. Handles; 4. Body;
[0037] 5. Suture needles; 6. Suture thread;
[0038] 7. Propeller; 71. Outer sleeve; 711. Baffle; 72. Piston; 721. Stop block;
[0039] 8 blood vessels; 81 bleeding points. Detailed Implementation
[0040] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.
[0041] See Figures 1 to 4 This utility model discloses a suture hemostatic forceps, including a handle 3, a body 4, and a jaw 10. The jaw 10 has two blades, which are referred to as first blade 1 and second blade 2 in this embodiment for ease of explanation. The first blade 1 and second blade 2 have the same structure. In this embodiment, both the first blade 1 and the second blade 2 have a gradually narrowing width and an upward-curving front end.
[0042] Both the first jaw blade 1 and the second jaw blade 2 have internal channels. For ease of explanation, in this embodiment, the channels in the first jaw blade 1 and the second jaw blade 2 are named the first channel 11 and the second channel 21, respectively. The channels extend from the side of the jaw blade near the rear end to the tip of the jaw blade. When the jaw 10 is closed, the channel openings at the tips of the first jaw blade 1 and the second jaw blade 2 correspond to each other, and the channels in the first jaw blade 1 and the second jaw blade 2 are interconnected. The channels between the two jaw blades are connected at the tips, so that the two channels (first channel 11 and second channel 21) form a U-shaped path within the jaw 10. For ease of explanation, the channel openings near the rear end of the side of the first jaw blade 1 and the second jaw blade 2 are named the first channel opening 111 and the second channel opening 211, respectively, and the channel openings at the tips of the first jaw blade 1 and the second jaw blade 2 are named the first pair interface 112 and the second pair interface 212, respectively.
[0043] For reference Figure 8 As shown, the first channel 11 and the second channel 21 form arc-shaped guide sections at the tips of the first clamp blade 1 and the second clamp blade 2, respectively (for ease of explanation, they are named the first arc-shaped guide section 113 and the second arc-shaped guide section 213). In the above structure, when the jaws 10 are closed, the first arc-shaped guide section 113 and the second arc-shaped guide section 213 connect to form the turning section a at the end of the U-shaped path. The entire U-shaped path starts from the first channel opening 111, passes through the first channel 11, the first arc-shaped guide section 113, the first interface 112, the second interface 212, the second arc-shaped guide section 213, and the second channel 21, and ends at the second channel opening 211. Of course, it can also proceed in the opposite direction.
[0044] The U-shaped path is used for the passage of the suture needle 5 and the suture 6. When the suture hemostat in this embodiment clamps a bleeding point 81 on the side wall of the blood vessel 8, if the bleeding stops, it means that the bleeding can be successfully stopped by closing the bleeding point 81. At this time, a suture needle 5 with a suture 6 at the end can be used to enter the first channel 11 from the first channel opening 111, and then pass through the first arc-shaped guide section 113, the first interface 112, the second interface 212, and the second arc-shaped guide section 213 in sequence (during this process, the suture needle 5 bends). Then, the entire needle body of the suture needle 5 is placed in the second channel 21 (or most of the needle body of the suture needle 5 is placed in the second channel 21, while the end of the suture needle 5 is in the turning section a at the end of the U-shaped path), and then the clamp mouth 10 is opened (see Figure 9 Since most of the suture needle 5 is placed within the second channel 21, it will not detach from the second interface 212 due to traction when the clamp jaws 10 are opened. At this point, both ends of the suture 6 pass through and are located on both sides of the bleeding point 81. After cutting the connection between the suture 6 and the suture needle 5, tying the two ends of the suture 6 together completes the suturing of the bleeding point 81. The suturing operation using the suture hemostat is simple and convenient, and the operation can be completed without the need for additional vascular clamps, avoiding the mutual interference caused by the use of multiple instruments in conventional suturing hemostasis, and greatly improving the safety of suturing hemostasis.
[0045] In the suture hemostat of the above embodiment, the front ends of the first clamp blade 1 and the second clamp blade 2 are curved upwards, making it easier to see the location of the bleeding point 81. Preferably, the front ends of the first clamp blade 1 and the second clamp blade 2 are curved upwards at an angle of 15° and are curved in a smooth arc.
[0046] In this embodiment, the inner diameter of the first channel 11 and the second channel 21 is 0.45mm, and the corresponding inner surfaces of the first clamp leaf 1 and the second clamp leaf 2 are serrated to better improve the bite strength.
[0047] Preferably, the suture hemostat is a double-jointed forceps, with a sliding plate structure between the forceps handle 3 and the forceps body 4.
[0048] See Figure 5 In this embodiment, the suture hemostat is also equipped with a suture needle 5. The tail end of the suture needle 5 is connected to the suture 6. The suture needle 5 tapers towards its tip and is flexible, allowing it to be bent at a large angle. This allows the suture needle 5 to bend and move within the first channel 11 and the second channel 21, which form a U-shaped path. Specifically, the suture needle 5 can enter through the channel of one of the forceps blades, pass through the channel openings at the tips of both forceps blades, and then reach the channel of the opposite forceps blade. The suture needle 5 achieves a large-angle bend when passing through the channel openings at the tips of the two forceps blades. Preferably, in this embodiment, the tail end diameter of the suture needle 5 is 0.15 mm, the length of the suture needle 5 is 27 mm, and the suture 6 can be a 4-0 absorbable or non-absorbable suture.
[0049] The device is also equipped with a pusher 7 for advancing the suture needle 5 within the channel. The pusher 7 includes an outer sleeve 71 and a piston 72 that is movable within the outer sleeve 71. The tail end of the suture needle 5 can be inserted into the front end of the outer sleeve 71 and presses against the front end of the piston 72. When the piston 72 advances forward, the suture needle 5 is pushed out of the outer sleeve 71. After being pushed forward, the suture needle 5 disengages from the pusher 7, and the tail end of the suture needle 5 can pass through the channel of one clamp leaf, through the rotating section a, and enter the channel of the other clamp leaf. The tail end of the outer sleeve 71 may be provided with a baffle 711, and the tail end of the piston 72 may be provided with a stop block 721, which is blocked outside the baffle 711. In this embodiment, the length of the portion of the piston 72 placed inside the outer sleeve 71 is less than the length of the outer sleeve 71. Preferably, in this embodiment, the outer diameter of the outer sleeve 71 is no greater than 0.45 mm, the inner diameter is 0.35 mm, and the diameter of the piston 72 is no greater than 0.35 mm.
[0050] Preferably, the pusher 7 can be assembled with the suture needle 5 and the suture thread 6 and shipped as a complete unit, with the suture thread 6 connected to the end of the suture needle 5 and the end of the suture needle 5 (2mm) placed inside the outer sleeve 71. See reference. Figures 6 to 8 When in use, one can directly take out a piece, insert the suture needle 5 into the first channel 111 (or the second channel 211) of a suture hemostat, and then push the pusher 7 and the piston 72 to push the suture needle 5, thereby further improving the ease of use of the suture hemostat of this utility model.
[0051] Preferably, the thruster 7 is made of a flexible material, which allows the thruster 7 to move smoothly in and out of the channels (first channel 11, second channel 21).
[0052] See Figures 10 to 16The process of suturing the bleeding point 81 on the side wall of the blood vessel 8 using the suture hemostat, pusher 7, suture needle 5, and suture 6 in this embodiment is described below (for ease of explanation of the positional changes of the suture needle 5, Figures 10-16 (Using a top-down view and a cross-sectional view)
[0053] 1. See reference Figure 10 , Figure 11 The suture hemostat is used to clamp the bleeding point 81 from both sides to stop the bleeding. At this time, the first pair of interfaces 112 and the second pair of interfaces 212 are connected, and the first channel 11 and the second channel 21 are connected to form a U-shaped path in the jaw 10.
[0054] 2. See reference Figure 12 The assembled suture needle 5, suture thread 6, and pusher 7 (which can be assembled at the factory or assembled during use) are then aligned with the first channel opening 111. The pusher 7 is then pushed to allow the pusher 7 and the suture needle 5 to enter the first channel 11 together (or they can enter the second channel 21 from the second channel opening 211 first). Since the suture needle 5 and the pusher 7 are both flexible, they can be bent and smoothly enter the channel.
[0055] 3. See reference Figure 13 , Figure 17 After the pusher 7 pushes the suture needle 5 into the first channel 11, it continues to push forward, so that the entire front part of the pusher 7 enters the first channel 11. When the outer sleeve 71 of the pusher 7 reaches the front end of the first channel 11 and is blocked from further advancement (such as...), Figure 17 As shown), the piston 72 pushes the stop 721 at its tail, propelling the suture needle 5 forward while simultaneously disengaging the suture needle 5 and suture 6 from the outer sleeve 71. Driven by the pusher 7 and piston 72, the suture needle 5 bends through the first arc-shaped guide section 113, the first interface 112, the second interface 212, and the second arc-shaped guide section 213. After completing the action of pushing the piston 72, the suture needle 5 may be fully inserted into the second channel 12 of the second clamp blade 2, or it may... Figure 13 As shown, most of the needle body of the suture needle 5 enters the second channel 12 of the second clamp blade 2, with only the tail end of the suture needle 5 located in the turning section a at the end of the U-shaped path (that is, the entire needle body of the suture needle 5, only the tail end of the suture needle 5, has not yet fully entered the second channel 12, and the tail end of the suture needle 5 is exposed from the second pair of interfaces 212 and is located on the first arc-shaped guide section 113).
[0056] The purpose of this step is to use the push of the pusher 7 and the piston 72 to ensure that at least a large part of the needle body of the suture needle 5 is in the second channel 12, so that the suture needle 5 will not detach from the second pair of interfaces 212 when the jaws 10 are opened in the next step.
[0057] 4. See reference Figure 14 The pusher 7 is pulled out from the first channel 11 through the first channel opening 111, and the clamp jaws 10 are opened. At this time, since most of the needle body of the suture needle 5 is placed in the second channel 12, only the tail end may still be placed on the first arc-shaped guide section 113. Therefore, the pulling effect when the clamp jaws 10 are opened will not cause the suture needle 5 to detach from the second pair of interfaces 212 and exit the second channel 12. However, after the clamp jaws are opened, the tail end of the suture needle 5, which was originally placed on the first arc-shaped guide section 113, will detach from the first pair of interfaces 112 and be exposed outside the second pair of interfaces 212. One end of the suture 6 is connected to the tail end of the suture needle 5, and the suture 6 can extend from the tail end of the suture needle 5 through the first pair of interfaces 112 and the first channel 11 to the outside of the first channel opening 111. Since the first clamp blade 1 and the second clamp blade 2 are clamped on both sides of the bleeding point 81, the suture 6 enters the blood vessel 8 from one side of the bleeding point 81 and is located on the other side of the bleeding point 81.
[0058] 5. See Figure 15 Withdraw the suture hemostat and move it away from the blood vessel 8. Pull the suture 6 out of the blood vessel 8 from the other side of the bleeding point 81. At this time, the two ends of the suture 6 will exit the blood vessel 8 from both sides of the bleeding point 81.
[0059] 6. See Figure 16 Cut the connection between the suture needle 5 and the suture 6, and tie the ends of the suture 6 to complete the suturing of the bleeding point 81. Since the end of the suture needle 5 is still exposed from the second interface 212, the suture needle 5 can be pulled out of the second channel 21 directly through the exposed end of the suture needle 5 so that the suture hemostat can be used again.
[0060] The above is merely one embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A suture hemostat, comprising a handle, a body, and a jaw, the jaw having two closable blades, characterized in that: Both jaws have internal channels that extend from the outer side of the jaws near the rear end to the tip of the jaws. When the jaws are closed, the channels at the tips of the two jaws correspond to each other, and the channels in the two jaws are connected to each other, forming a U-shaped path in the jaws.
2. The suture hemostat according to claim 1, characterized in that: It is also equipped with a flexible suture needle. The end of the suture needle is combined with the suture thread. The suture needle enters from the channel of one of the clamp blades and passes through the channel opening at the tip of the two clamp blades before entering the channel of the opposite clamp blade. The suture needle achieves a large angle bend when passing through the channel opening at the tip of the two clamp blades.
3. A suture hemostat according to claim 2, characterized in that: The channel forms an arc-shaped guide section at the tip of the blade, and the arc-shaped guide sections of the two blades are joined together to form a rotating section at the end of the U-shaped path.
4. A suture hemostat according to claim 2, characterized in that: It is also equipped with a pusher for advancing the suture needle in the channel. The pusher includes an outer sleeve and a piston that can move inside the outer sleeve. The tail end of the suture needle is inserted into the front end of the outer sleeve and presses against the front end of the piston. The suture needle is pushed out of the outer sleeve when the piston moves forward.
5. A suture hemostat according to claim 4, characterized in that: The suture needle has a tail tip diameter of 0.15mm, a suture needle length of 27mm, and uses 4-0 absorbable or non-absorbable suture. The outer diameter of the outer sleeve is no greater than 0.45mm, the inner diameter is 0.35mm, and the piston diameter is no greater than 0.35mm.
6. A suture hemostat according to claim 4, characterized in that: The length of the piston inside the outer sleeve is less than the length of the outer sleeve. The outer sleeve has a baffle at the tail end, and the piston has a stop block at the tail end, which is blocked outside the baffle.
7. A suture hemostat according to any one of claims 1 to 6, characterized in that: The width of the two blades gradually narrows forward and the front end curves upward.
8. A suture hemostat according to any one of claims 1 to 6, characterized in that: The inner diameter of the channel is 0.45mm.
9. A suture hemostat according to any one of claims 1 to 6, characterized in that: The inner surfaces of the two pincers are serrated.
10. A suture hemostat according to any one of claims 1 to 6, characterized in that: The suture hemostat is a double-jointed forceps with a sliding plate structure between the handle and the body.