A knee ligament reconstruction in vitro tendon preservation capsule

Abstract

The utility model discloses a kind of in-vitro tendon preservation cabin in knee joint ligament reconstruction surgery, belong to medical technical field, including board frame, positioning assembly and flushing component, the board frame is horizontally fixed and arranged in warehouse body, and parallel symmetry is provided with base plate on the board frame, clamping plate is rotatably arranged on two base plates, and the base plate and clamping plate are oppositely provided with tooth-shaped stripe, and scale line is equipped on the board frame;The positioning assembly is used for fixing the angle between clamping plate and base plate;The flushing component is used for washing tendon;The utility model can pre-stretch tendon.

Description

Technical Field

[0001] This utility model belongs to the field of medical technology, and in particular relates to an isolated tendon preservation capsule for knee joint ligament reconstruction surgery. Background Technology

[0002] The knee joint is the largest joint in the human body and also the most prone to sports injuries. Among these injuries, the anterior cruciate ligament (ACL) injury is the most common. ACL reconstruction is one of the most common surgical procedures in sports medicine. Currently, the most commonly used grafts are still autologous tendons, including the peroneus longus tendon, hamstring tendon, and quadriceps tendon. After harvesting, the autologous tendon needs pretreatment and braiding, and it needs to be temporarily preserved before implantation. Therefore, graft contamination during surgery is a problem that requires special attention. The basic steps of ACLR involve multiple stages, including tendon harvesting, tendon braiding, bone tunnel construction, and implantation and fixation of the graft within the bone tunnel. Pre-tensioning of the grafted tendon is a crucial step. Without pre-tensioning, the ligament will become loose overall, joint stability will decrease, and the surgical outcome will be poor. This paper proposes a structure for pre-tensioning the tendon. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides an isolated tendon preservation chamber for knee ligament reconstruction surgery, thus solving the aforementioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an isolated tendon preservation chamber for knee ligament reconstruction surgery, comprising a frame, a positioning component, and a flushing component. The frame is horizontally fixed within the chamber, and base plates are symmetrically arranged parallel to each other on the frame. Clamping plates are rotatably mounted on both base plates, and toothed stripes are provided at the positions opposite the base plates and clamping plates. The frame is also provided with scale lines. The positioning component is used to fix the angle between the clamping plates and the base plates. The flushing component is used to flush the tendon.

[0005] Beneficial effects

[0006] This invention provides an ex vivo tendon preservation capsule for knee ligament reconstruction surgery, which has the following advantages compared with the prior art:

[0007] 1. The user places both ends of the tendon between the base plate and the clamp on both sides, and then tightens the bolt. At this time, since the lower end of the bolt is threaded to the base plate, the bolt begins to move vertically downward. At the same time, since the bolt passes through the guide groove on the upper surface of the bolt, the upper end of the bolt begins to press down on the clamp. During this process, since the guide groove has a certain length, it will not interfere with the downward movement of the bolt. That is, the tendon is clamped between the clamp and the base plate with the cooperation of the clamp and the bolt. Then the user can pull the base plate laterally to manually adjust the spacing between the base plates, thereby pre-stressing the tendon between them, reducing the creep of the graft, preventing the ligament from gradually elongating after being stressed, improving the initial stiffness and strength of the graft when bearing load, and enabling it to effectively resist tension after fixation. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the blowout shield structure of this utility model.

[0009] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0010] Figure 3 This is an enlarged cross-sectional view of the present invention.

[0011] Reference numerals in the attached drawings: 101, 201, 202, 203, 204, 205, 206, 207, 208, 209, 301, 302, 303, 304, 305, 306, 306, 307, 208, 209, 301, 302, 303, 304, 305, 306. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0013] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0014] Please see Figures 1-3 This utility model provides an embodiment of an isolated tendon preservation chamber for knee ligament reconstruction surgery, comprising a frame 201, a positioning component, and a flushing component. The frame 201 is horizontally fixed inside the chamber 101, and the frame 201 is provided with parallel and symmetrical base plates 202. Each of the two base plates 202 is rotatably provided with a clamping plate 203, and the base plates 202 and the clamping plates 203 are provided with toothed stripes at the opposite positions. The frame 201 is provided with scale lines.

[0015] The positioning component is used to fix the angle between the clamp 203 and the base plate 202; the rinsing component is used to rinse the tendon.

[0016] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific chamber 101 described in the above embodiments. For example, the bottom of the chamber 101 is provided with a through hole. The purpose of this setting is to facilitate the export of the flushing fluid in the chamber 101.

[0017] Specifically, the positioning component includes a guide groove 204, a bolt 205, and an adjustment component. The upper surface of the clamping plate 203 is provided with a guide groove 204. The lower end of the bolt 205 extends vertically through the guide groove 204, and the lower end of the bolt 205 is threadedly connected to the base plate 202.

[0018] The adjustment component is used to adjust the distance between the two substrates 202.

[0019] In the above embodiment, the user places both ends of the tendon between the base plate 202 and the clamping plate 203 on both sides, and then tightens the bolt 205. At this time, since the lower end of the bolt 205 is threadedly connected to the base plate 202, the bolt 205 begins to move vertically downward. At the same time, since the bolt 205 passes through the guide groove 204 on the upper surface of the bolt 205, the upper end of the bolt 205 begins to press down on the clamping plate 203. During this process, since the guide groove 204 has a certain length, it will not interfere with the downward movement of the bolt 205. That is, at this time, the tendon is clamped between the clamping plate 203 and the base plate 202 with mutual cooperation, and can be limited by the bolt 205. Then the user can pull the base plate 202 laterally to manually adjust the spacing of the base plate 202, thereby pre-stretching the tendon between them, reducing the creep of the graft, preventing the ligament from gradually elongating after being stressed, improving the initial stiffness and strength of the graft when bearing load, and enabling it to effectively resist tension after fixation.

[0020] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific clamping plate 203 described in the above embodiments. For example, the upper surface of the clamping plate 203 is provided with an anti-slip pad. The purpose of this setting is to prevent the bolt 205 from sliding on it, which would prevent the clamping plate 203 from being effectively limited.

[0021] Specifically, the adjustment component includes a slider 207, the base plate 202 is fixedly connected to the corresponding slider 207, and the slider 207 is slidably connected in the groove of the plate frame 201. The sidewall of the groove of the plate frame 201 is symmetrically fixedly connected with partitions 208, and the distance between the two partitions 208 is less than the width of the slider 207.

[0022] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific partition 208 described in the above embodiments. For example, the distance between the end of the partition 208 and the groove of the plate frame 201 is greater than the length of the slider 207. The purpose of this arrangement is to facilitate the removal of the slider 207.

[0023] Specifically, the slider 207 is vertically threaded with a bolt B209, and the upper end face of the bolt B209 abuts against the upper surface of the partition 208.

[0024] In the above embodiment, when it is necessary to adjust the distance between the two substrates 202, the user should loosen the bolt B209 on one side to separate it from the upper surface of the partition 208. At this time, the corresponding slider 207 can slide freely in the groove of the plate frame 201 to adjust the distance between the two substrates 202. After the distance is adjusted, the user should tighten the bolt B209 on that side to press it against the upper surface of the partition 208 to limit the slider 207 and fix the distance between the two substrates 202. After use, the user should loosen the two bolts B209 and push the slider 207 into the gap between the end of the partition 208 and the plate frame 201. At this time, the slider 207 can be removed from the plate frame 201 to facilitate the classification, soaking and disinfection of the chamber 101.

[0025] For the above examples, those skilled in the art should know that when implementing the above technical solutions, it is not limited to the specific bolt B209 described in the above embodiments. For example, the bolt B209 has an anti-slip pad on the surface for contacting the partition 208. The purpose of this setting is to facilitate the contact between the bolt B209 and the plate frame 201 by this setting.

[0026] Specifically, the flushing assembly includes a frame 301, a guide rod 302, and an infusion assembly. The base plate 202 is located at the center line of the frame 301, and one end of the frame 301 is fixedly connected to the guide rod 302. The end of the guide rod 302 penetrates into the cavity of the chamber 101, and the guide rod 302 is rotatably connected to the chamber 101. A plurality of tapered guide holes 306 are fixedly connected on the frame 301.

[0027] The infusion assembly is used to infuse flushing fluid into the cavity of the chamber 101.

[0028] Specifically, a turntable 303 is fixedly connected to the other end of the frame 301, and the turntable 303 is rotatably connected to the chamber 101.

[0029] In the above embodiment, when the flushing fluid flows into the cavity of the chamber 101 through the infusion assembly and fills the cavity of the chamber 101 with flushing fluid, the flushing fluid can then flow into the frame 301 through the guide rod 302 that penetrates into the cavity of the chamber 101. The flushing fluid is then flushed through the multiple conical guide holes 306 provided on the frame 301 to flush the tendon fixed between the base plate 202 and the clamping plate 203. During this process, the user should manually rotate the turntable 303 at a constant speed until it is stuck at the end of the plate frame 201 and cannot be rotated. At this time, the user should rotate the turntable 303 in the opposite direction so that the frame 301 rotates around the tendon. At this time, the multiple conical guide holes 306 on both sides of the frame 301 continuously spray water during the rotation to form an annular water curtain, thereby flushing the tendon as a whole and avoiding dead corners. When the water flow sprayed from the conical guide holes 306 at both ends of the frame 301 acts on the tendon, it can wash away the residual water on the tendon, so that the water can quickly detach the tendon from the tendon surface after flushing.

[0030] Specifically, the infusion assembly includes an infusion pump 304, which is fixedly connected to the outer wall of the chamber 101, and the outlet pipe of the infusion pump 304 extends into the cavity of the chamber 101. A flexible hose 305 is fixedly connected to the inlet of the infusion pump 304.

[0031] In the above embodiment, the user should insert the end of the tubing 305 into the flushing solution bottle, which can be iodine or saline, and start the infusion pump 304, so that the infusion pump 304 draws the liquid in the flushing solution bottle into the cavity of the chamber 101, thereby continuously infusing the flushing solution into the chamber 101 to flush the tendon.

[0032] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific infusion pump 304 described in the above embodiments. For example, the infusion pump 304 has multiple adjustable output levels. The purpose of this setting is to facilitate the adjustment of the water pressure flowing out of the guide rod 302 through this setting.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] The term "fixed connection" as used in this application refers to a connection in which parts or components are fixed without any relative movement. This includes both detachable and non-detachable connections.

[0035] (1) Detachable connection: The components are fixed together using screws, splines, wedges, etc. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of the bolts, keys, wedges) and properly tightened.

[0036] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxyacetylene cutting for repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection, and remedial measures (such as correction and polishing) during connection.

[0037] The sliding connection referred to in this application means that the component can slide along a linear trajectory, and the hinge referred to in this application means that the component can rotate along an axial constraint.

[0038] In some cases, the sliding connection and hinge referred to in this application may also be damped, enabling the component to maintain in the desired position.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A preservative capsule for ex vivo tendons during knee ligament reconstruction surgery, characterized in that, The device includes a plate frame (201), a positioning component, and a rinsing component. The plate frame (201) is horizontally fixed inside the chamber (101), and the plate frame (201) is symmetrically arranged with parallel base plates (202). Each of the two base plates (202) is rotatably mounted with a clamping plate (203). The base plates (202) and the clamping plates (203) are provided with toothed stripes at their opposite positions, and the plate frame (201) is provided with scale lines. The positioning component is used to fix the angle between the clamp (203) and the base plate (202); the rinsing component is used to rinse the tendon.

2. The isolated tendon preservation chamber for knee ligament reconstruction according to claim 1, characterized in that, The positioning component includes a guide groove (204), a bolt (205), and an adjustment component. The upper surface of the clamping plate (203) is provided with a guide groove (204). The lower end of the bolt (205) extends vertically through the guide groove (204), and the lower end of the bolt (205) is threadedly connected to the base plate (202). The adjustment component is used to adjust the spacing between the two substrates (202).

3. The isolated tendon preservation chamber for knee ligament reconstruction according to claim 2, characterized in that, The adjustment component includes a slider (207), the base plate (202) is fixedly connected to the corresponding slider (207), and the slider (207) is slidably connected in the groove of the plate frame (201). The sidewall of the groove of the plate frame (201) is symmetrically fixedly connected with partitions (208), and the distance between the two partitions (208) is less than the width of the slider (207).

4. The isolated tendon preservation chamber for knee ligament reconstruction according to claim 3, characterized in that, The slider (207) is vertically threaded with a bolt B (209), and the upper end face of the bolt B (209) abuts against the upper surface of the partition plate (208).

5. The isolated tendon preservation chamber for knee ligament reconstruction according to claim 1, characterized in that, The flushing assembly includes a frame (301), a guide rod (302), and an infusion assembly. The base plate (202) is located at the center line of the frame (301), and one end of the frame (301) is fixedly connected to the guide rod (302). The end of the guide rod (302) penetrates into the cavity of the chamber (101), and the guide rod (302) is rotatably connected to the chamber (101). A plurality of tapered guide holes (306) are fixedly connected on the frame (301). The infusion assembly is used to infuse flushing fluid into the cavity of the chamber (101).

6. The isolated tendon preservation chamber for knee ligament reconstruction according to claim 5, characterized in that, The other end of the frame (301) is fixedly connected to a turntable (303), and the turntable (303) is rotatably connected to the chamber (101).

7. The isolated tendon preservation chamber for knee ligament reconstruction according to claim 5, characterized in that, The infusion assembly includes an infusion pump (304), which is fixedly connected to the outer wall of the chamber (101), and the outlet pipe of the infusion pump (304) extends into the cavity of the chamber (101). A flexible hose (305) is fixedly connected to the inlet of the infusion pump (304).

8. The isolated tendon preservation chamber for knee ligament reconstruction according to claim 4, characterized in that, The bolt B (209) has an anti-slip pad on the surface that contacts the partition plate (208).

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