Arthroscope cannula capable of managing sutures

Abstract

The utility model provides an arthroscope cannula capable of managing sutures, which comprises a cannula body, a cannula cover and a liquid discharge tube, and the inner wall of a cannula cavity is provided with three axial suture protecting grooves which are uniformly distributed in the circumferential direction; a waterproof cover with three radial opening seams is arranged at the rear end of the tube cavity, and the opening seams are aligned with the wire protecting grooves; and the rear end of the tube cover is provided with three radial wire clamping grooves which are aligned with the opening seam. According to the utility model, through the cooperation of the thread protection groove, the waterproof cover opening seam and the pipe cover thread clamping groove, the surgical suture and the instrument channel can be effectively isolated and orderly fixed, and the problem of interference between the surgical instrument and the suture when the surgical instrument enters and exits is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical apparatus and instruments, especially to an orthopedic instrument, in particular to a joint mirror sleeve capable of managing suture. BACKGROUND

[0002] In the field of orthopedics and sports medicine, the joint mirror sleeve is a basic and essential surgical instrument. It is pre-placed in the surgical incision to establish and maintain a stable working channel, facilitating the repeated and smooth entry and exit of various surgical instruments such as joint mirrors, forceps, suturing devices, and shaving knives into the joint cavity. At the same time, it can effectively maintain the liquid pressure in the joint cavity, providing a clear view for surgery.

[0003] During procedures such as rotator cuff repair and meniscus suturing, 1 to 3 suture lines are often introduced into the joint cavity for tissue suturing and knot fixation. One end of these suture lines is connected to the tissue to be repaired, and the other end needs to be temporarily retained outside the body through the sleeve to facilitate subsequent operations by the surgeon.

[0004] In the prior art, the joint mirror sleeve widely used in clinical practice generally includes a tube body with a through lumen. The front end of the tube body often has threads to enhance fixation, the rear end is provided with a closable tube cover to prevent liquid leakage, and the side wall is connected to a drainage tube to regulate perfusion. However, the internal design of the lumen generally focuses on instrument passability, wear resistance, and sealing, with a smooth inner wall. This leads to scratching and entanglement of the suture lines in the lumen during the operation of various surgical instruments. This not only causes poor instrument entry and exit, disrupting the surgical rhythm, but also may accidentally drag the suture lines into the deep joint cavity, affecting the surgical process and causing safety hazards. To address this issue, existing solutions mainly rely on manual traction of the suture lines outside the sleeve by surgical assistants or the use of additional wire clips to fix the suture lines. However, this method not only increases labor costs but also still cannot avoid the risk of suture line slippage and entanglement.

[0005] There are also sleeves that can organize suture lines in the prior art, such as Chinese patent CN215605982U, which discloses a joint mirror access sleeve with a wire hanging function. The tube cover has a side wall, and the side wall is provided with a wire hanging groove to reduce the disorder of suture lines during suturing. However, the inner wall of the lumen of this sleeve is smooth, and it cannot isolate the suture lines in the core area of instrument passage. It only fixes the suture lines through the wire hanging groove on the outside of the tube cover to achieve the effect of wire organization, so it cannot fundamentally solve the problem of interference between instruments and suture lines in the lumen. SUMMARY

[0006] The purpose of this invention is to provide an arthroscopic cannula that can manage sutures, which solves the technical problem in the prior art where surgical instruments easily scrape or entangle with the sutures inside the lumen when entering the lumen.

[0007] This utility model provides an arthroscopic cannula for managing sutures, comprising a tube body with a through-cavity inside. A cap is located at the rear end of the tube body, with an opening at its center communicating with the rear end of the cavity. A drain pipe communicating with the cavity is located on the side wall of the tube body. Three suture-protecting grooves are axially formed on the inner wall of the cavity, extending forward from the rear end of the cavity. The three suture-protecting grooves are evenly distributed circumferentially around the axis of the tube body. A waterproof cap is fixedly installed at the opening at the center of the cap, with three radially formed openings on the waterproof cap. The inner ends of the three openings converge at the center of the waterproof cap, and the outer ends extend to near the edge of the waterproof cap. The circumferential positions of the three openings are aligned with the three suture-protecting grooves. Three suture-holding grooves are radially formed on the surface of the rear end of the cap, also aligned with the three openings. The bottom edge of the axial section of the suture-protecting grooves gradually slopes towards the axis of the cavity from the rear end to the front end.

[0008] Furthermore, the axial length of the cable guard groove is less than half the axial length of the pipe body.

[0009] Furthermore, the opening is a straight cut that penetrates the thickness of the waterproof cover.

[0010] Furthermore, the cross-section of the wire slot is inverted V-shaped.

[0011] Furthermore, a boss is provided around the outer ring of the rear end face of the pipe cap in the circumferential direction around the axis of the pipe body, and the wire-locking groove is formed on the boss.

[0012] Furthermore, the boss is made of an elastic material, and the two long sides of any of the wire-locking groove openings are in contact with each other.

[0013] Furthermore, the outer wall at the front end of the tube is provided with threads.

[0014] Compared with the prior art, the effects of this utility model are positive and obvious:

[0015] 1. This invention provides an independent suture receiving channel by setting three axially extending and circumferentially evenly distributed suture grooves on the inner wall of the lumen. During surgery, the suture can be placed in the three suture grooves respectively, spatially isolating it from the main channel in the center of the lumen. Instruments are less likely to come into contact with the suture when entering or exiting the center of the lumen, reducing the problem of sutures being accidentally introduced or entangled by instruments, thus improving the efficiency and safety of surgical procedures.

[0016] 2. This utility model provides radial thread-holding grooves on the rear surface of the tube cap, which are aligned one-to-one with the thread-guarding grooves. After the thread is led out from the thread-guarding groove, it can be smoothly inserted into the corresponding thread-holding groove, keeping the thread in an orderly state for easy identification and retrieval.

[0017] 3. The waterproof cap of this utility model has three radial openings. The openings are aligned with the suture groove, forming a continuous management channel for the suture to extend from the suture groove to the outside of the cap. The narrow openings and the elastic material close the gaps after the suture passes through, effectively reducing leakage of liquid from the rear end of the lumen and maintaining the cleanliness of the surgical area. Simultaneously, it pre-separates the three sutures at the exit, achieving orderly management throughout the entire process from inside to outside the lumen. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of Embodiment 1 of this utility model.

[0019] Figure 2 A schematic diagram of the waterproof cover connection in Embodiment 1 of this utility model.

[0020] Figure 3 A top view of Embodiment 1 of this utility model.

[0021] Figure 4 A front sectional view of Embodiment 1 of this utility model.

[0022] Figure 5 A top sectional view of Embodiment 1 of this utility model.

[0023] In the diagram: 1. Pipe body; 11. Pipe cavity; 2. Thread; 3. Drain pipe; 4. Pipe cap; 41. Cable clamping groove; 5. Waterproof cap; 51. Opening seam; 6. Cable protection groove. Detailed Implementation

[0024] The following embodiments will further illustrate the present invention, but are not intended to limit the present invention.

[0025] Example 1

[0026] like Figures 1 to 5 As shown, this embodiment provides an arthroscopic cannula for managing sutures, which includes a tube body 1, and a cavity 11 is provided inside the tube body 1 that runs axially through both the front and rear ends of the tube body 1.

[0027] The front end of the tube body 1 is the implantation end in surgery, and the other end of the tube body 1 is the rear end. The outer peripheral surface of the front part of the tube body 1 is provided with threads 2. The structure of the threads 2 enables the tube body 1 to be more stably screwed into and anchored in the soft tissue at the surgical incision or the pre-established bone tunnel in surgery, preventing the sleeve from accidentally slipping off during the operation.

[0028] An annular tube cover 4 is coaxially fixedly connected at the opening of the rear end of the tube body 1. The center of the tube cover 4 is provided with an opening for the instrument to pass through, and a waterproof cover 5 is fixedly connected to the opening. The waterproof cover 5 is installed at the rear end opening of the tube cavity 11 and is coaxially arranged with the tube body 1. The waterproof cover 5 is usually made of elastic medical silicone or rubber material. By closing the rear end opening of the tube cavity 11 with the waterproof cover 5, the spilling of a large amount of perfusion liquid from the rear end of the tube cavity 11 during surgery is prevented, and the cleanliness of the surgical area is maintained.

[0029] A drainage tube 3 is also communicatively arranged at a position near the middle rear section of the side wall of the tube body 1. The drainage tube 3 is directly communicated with the internal tube cavity 11 of the tube body 1, and the outer end thereof can be connected to a negative pressure suction device or a perfusion liquid pipeline, so as to actively suck the waste liquid in the joint cavity or control the inflow and outflow of the perfusion liquid during surgery, thereby maintaining the stable liquid pressure and clear vision in the joint cavity.

[0030] Three wire protection grooves 6 are formed on the inner wall of the tube cavity 11 in the axial direction of the tube body 1. The three wire protection grooves 6 extend a certain length from the rear end opening of the tube cavity 11 to the front, and the three wire protection grooves 6 are uniformly distributed in the circumferential direction around the central axis of the tube body 1, that is, the central angle between adjacent wire protection grooves 6 is one hundred and twenty degrees. This uniform circumferential distribution design allows the sutures to be spaced apart at a relatively large distance, facilitating arrangement.

[0031] The bottom edge of the axial cross section of the wire protection groove gradually tilts towards the axial direction of the tube cavity from the rear end to the front end. This gradual design makes it smoother to put the suture into the wire protection groove 6, and at the same time, when the instrument is withdrawn from front to back, it helps to guide the suture that may be slightly brought out back to the deep part of the wire protection groove 6, further preventing entanglement or pulling.

[0032] In a preferred embodiment of the wire protection groove 6, the axial length of the wire protection groove 6 is less than one half of the axial length of the tube body 1, so as to ensure sufficient accommodation of the suture and at the same time ensure that the front part of the tube body 1 has a long enough smooth inner wall area for the surgical instrument to pass through more easily.

[0033] The middle part of the waterproof cover 5 is cut along its radial direction with three long and narrow opening slits 51, the inner ends of which meet at the center point of the waterproof cover 5, and the outer ends extend to the position close to the edge of the waterproof cover 5. The three opening slits 51 are aligned with the three wire protection grooves 6 in the circumferential direction. Each opening slit 51 is a long and narrow cut through the thickness of the waterproof cover 5, and the elastic material on both sides is tightly attached in the natural state, achieving the required sealing effect during the operation. When the suture is pressed in, the opening slit 51 is opened to allow the suture to pass through, and after the suture is in place, it is tightly wrapped around the suture relying on the material elasticity, thereby allowing the suture to pass through while achieving sealing and reducing liquid leakage.

[0034] On the rear end surface of the tube cover 4, i.e. the side surface away from the tube body 1 and towards the operator, three radially extending wire clamping grooves 41 are provided. The three wire clamping grooves 41 are aligned with the three opening slits 51 on the waterproof cover 5 and the three wire protection grooves 6 in the tube cavity 11 in a one-to-one correspondence.

[0035] One preferred scheme of the wire clamping groove 41 is that the cross-sectional shape of the wire clamping groove 41 is inverted V-shaped or L-shaped, i.e. the groove opening is sharp and the groove bottom is wide, thereby limiting the suture by geometry.

[0036] Specific use method:

[0037] First, place the cannula into the surgical site and fix it. Pass one to three sutures required for the operation through the cannula. The operator places each suture into a corresponding wire protection groove 6, isolating it from the central main passage of the tube cavity 11.

[0038] Then, pass the rear end of the suture through the corresponding radial opening slit 51 on the waterproof cover 5. Due to the guidance and elastic sealing of the opening slit 51, the sutures are orderly separated and liquid is not easily leaked out.

[0039] Finally, press the part of the suture that has been passed out into the corresponding wire clamping groove 41 on the rear end surface of the tube cover 4. At this point, the suture has completed the entire orderly fixation from inside the tube cavity 11 to outside the tube cavity 11.

[0040] When it is necessary to operate a certain suture, it can be taken out from the corresponding wire clamping groove 41 for operation, and the remaining sutures remain in place. When the surgical instrument enters and exits the central main passage of the tube cavity 11, it is not easy to touch the part of the suture in the wire protection groove 6, thereby avoiding the problem of mutual interference between the instrument and the suture.

[0041] Example Two

[0042] This embodiment is a preferred scheme of Example One. In order to enhance the wire clamping effect, an annular boss is provided around the central axis of the tube cover 4 in the outer ring area of the rear end surface of the tube cover 4, and the boss is integrally formed with the rear end of the tube cover 4. The wire clamping groove 41 is provided on the rear end surface of the boss.

[0043] The convex platform is preferably made of a material with certain softness and elasticity, such as medical silicon or rubber. On the elastic convex platform, the two side edges of each suture slot 41 at the opening are in contact and closed with each other in the natural state. When it is necessary to clamp the suture, pressure is applied to open the slot; after the pressure is removed, the two sides of the slot are elastically closed, so that the suture is limited in the suture slot 41, avoiding accidental falling out during the operation.

[0044] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A suture-manageable arthroscopic sleeve, comprising a sleeve body, a through-going lumen being formed in the sleeve body, a sleeve cover being formed at the rear end of the sleeve body, an opening being formed in the center of the sleeve cover and communicating with the rear end of the lumen, and a drainage tube being formed on the side wall of the sleeve body and communicating with the lumen, characterized in that: three wire-protecting grooves are formed in the inner wall of the lumen and extending axially from the rear end of the lumen to the front end; the three wire-protecting grooves are evenly distributed in the circumferential direction around the axis of the sleeve body; a waterproof cover is fixedly arranged at the opening in the center of the sleeve cover, three radial opening slits are formed in the waterproof cover, the inner ends of the three opening slits meet at the center area of the waterproof cover, and the outer ends of the three opening slits extend to the edge of the waterproof cover; the positions of the three opening slits in the circumferential direction are aligned with the positions of the three wire-protecting grooves in the circumferential direction; three wire-clamping grooves are formed in the surface of the rear end of the sleeve cover in the radial direction, and the positions of the three wire-clamping grooves in the circumferential direction are aligned with the positions of the three opening slits in the circumferential direction; and the bottom edge of the axial cross-section of the wire-protecting groove gradually inclines to the axis of the lumen from the rear end to the front end.

2. The suture-manageable arthroscopic sleeve according to claim 1, characterized in that: the axial length of the wire-protecting groove is less than one half of the axial length of the sleeve body.

3. The suture-manageable arthroscopic sleeve according to claim 1, characterized in that: the opening slit is a linear incision through the thickness of the waterproof cover.

4. The suture-manageable arthroscopic sleeve according to claim 1, characterized in that: the cross-section of the wire-clamping groove is inverted V-shaped.

5. The suture-manageable arthroscopic sleeve according to claim 1, characterized in that: a ring of bosses is circumferentially arranged around the axis of the sleeve body at the outer ring of the rear end surface of the sleeve cover, and the wire-clamping groove is formed in the boss.

6. The suture-manageable arthroscopic sleeve according to claim 5, characterized in that: the boss is made of elastic material, and the two long sides of the opening of the wire-clamping groove are connected to each other.

7. The suture-manageable arthroscopic sleeve according to claim 1, characterized in that: the outer wall of the front end of the sleeve body is provided with a thread. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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