Cylindrical closed tendon taking device

Abstract

The utility model discloses a cylindrical closed tendon taking device, which belongs to the technical field of medical equipment and comprises a cylindrical tendon taking sheath and a cutting sleeve, the cylindrical tendon taking sheath is used for taking autologous quadriceps femoris tendon as a cylindrical ligament graft in a knee joint cruciate ligament reconstruction operation, and the cutting sleeve is used for cutting the cylindrical graft. A graft through groove is formed in the cylindrical tendon taking sheath, and the head end of the cylindrical tendon taking sheath is obliquely arranged; the device is designed for conveniently cutting and cutting a cylindrical cruciate ligament transplantation plant from an autologous quadriceps femoris tendon, in the taking-out process, the inclination of the head end of the cylindrical tendon taking sheath serves as the standard, the tendon is gradually cut to the required specified size through the cylindrical tendon taking sheath, and then the tendon is taken out. The cylindrical tendon taking sheath is matched with the cutting sleeve to be taken down, the cutting mode is convenient and fast to operate, labor is saved, the edge of the taken graft is flat and not coarse, the size of the graft can be accurately determined according to different requirements, and the cutting device is simple in structure and convenient to widely use.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a cylindrical closed-end tendon remover. Background Art

[0002] During sports injuries or violent trauma in car accidents, the violent twisting of the knee joint produces huge shear and tension forces, which can lead to single or multiple ligament injuries of the knee joint, such as anterior and posterior cruciate ligament injuries and medial and lateral collateral ligament injuries. Anterior cruciate ligament injuries of the knee joint are very common. Since the anterior cruciate ligament is an important structure to maintain the stability and normal activity of the knee joint, and lacks good self-repair ability after injury, if the injury is severe and causes it to lose its biomechanical properties or even completely rupture, surgical treatment is required to restore its continuity and mechanical properties. Using tendons from other parts of the patient's body as grafts to reconstruct the anterior cruciate ligament is currently the most commonly used surgical treatment technique for anterior cruciate ligament reconstruction in clinical practice. In the past, autologous hamstring tendons were often selected as ligament grafts for reconstruction of the anterior cruciate ligament, with good results. However, recent studies have found that the stability and ability to resist rotational tension of the knee joint after reconstruction of the anterior cruciate ligament with hamstring tendons as grafts are significantly lower than those of the anterior cruciate ligament reconstructed with quadriceps tendons as grafts. At present, there are few tendon harvesters for quadriceps tendons on the market, and existing products still have shortcomings. Currently, there are few tendon harvesters for quadriceps tendon on the market. The existing products have cumbersome and laborious tendon harvesting procedures, rough edges of the harvested grafts, and the size of the grafts cannot be accurately determined. These shortcomings will seriously affect the efficacy of anterior cruciate ligament reconstruction surgery. To address the shortcomings of current products, we designed a cylindrical closed-end tendon harvester. Utility Model Content

[0003] The purpose of the utility model is to provide a cylindrical closed-end tendon remover to solve the above-mentioned technical problems in view of the deficiencies in the prior art.

[0004] The embodiment of the utility model adopts the following technical scheme: it includes a cylindrical tendon sheath used when the quadriceps tendon taken from the body is used as a cylindrical graft in knee cruciate ligament reconstruction surgery, and a cutting sleeve used to cut the cylindrical graft, the cylindrical tendon sheath is hollow from the head to the end and the hollow is cylindrical, the cutting sleeve is hollow, the outer diameter of the cutting sleeve is smaller than the inner diameter of the cylindrical tendon sheath and the two are in a matching state, the cutting sleeve can extend from the hollow position of the end of the cylindrical tendon sheath to a position almost close to the head end, the cylindrical tendon sheath is provided with a graft through groove for graft removal, the head end of the cylindrical tendon sheath is inclined, and the outer surface of the cylindrical tendon sheath is provided with scale values.

[0005] Furthermore, an operating handle is provided at the end of the cylindrical tendon removal sheath, and an outer surface of the operating handle is provided with an anti-slip thread.

[0006] Furthermore, two operating blocks are symmetrically arranged on both sides of the operating handle, and the two operating blocks and the operating handle form a T-shaped arrangement.

[0007] Furthermore, a cutting handle is provided at the end of the cutting sleeve, and an outer surface of the cutting handle is provided with anti-slip patterns.

[0008] Furthermore, the inclination angle of the first end of the cylindrical tendon sheath is 15°.

[0009] Furthermore, the cylindrical tendon sheath graft groove head end position is taken as the reference starting scale, and the scale value is 9CM.

[0010] Furthermore, both sides of the graft groove are arc-shaped. Furthermore, the diameter of the closed end of the cylindrical tendon sheath is 8mm and 9mm.

[0011] At least one of the above technical solutions adopted in the embodiment of the utility model can achieve the following beneficial effects:

[0012] When the medical staff removes the quadriceps tendon graft from the patient, they first make a 2-3 cm transverse skin incision on the upper edge of the patella, bluntly separate the subcutaneous tissue, and expose the part where the quadriceps tendon is connected to the upper edge of the patella. Use a scalpel to free the part of the quadriceps tendon located in the middle of the upper edge of the patella, determine the diameter of the free end of the graft according to the needs, and then use surgical sutures to weave the free end of the graft to play a role in traction and fixation. At this time, the suture at the free end of the graft is sent into the head end of the cylindrical tendon sheath and sent out from the tail end of the cylindrical tendon sheath. The medical staff pulls the suture to fix the free end of the graft with one hand, and holds the T-shaped operating handle with the other hand, gradually rotating the cylindrical tendon sheath concentrically in the direction of the quadriceps tendon and pushing it forward until the cylindrical tendon sheath cuts the graft to the required length. The suture and the free graft are completely removed from the graft channel, and the cutting sleeve is pushed from the end of the cylindrical tendon sheath to the head end to cut the end where the graft is connected to the quadriceps tendon, and the graft is completely removed.

[0013] This device is specially designed for conveniently cutting and intercepting cylindrical cruciate ligament grafts from autologous quadriceps tendon. During the removal process, the inclination of the first end of the cylindrical tendon sheath is used as a reference. After the quadriceps tendon is gradually cut to the required specified size through the cylindrical tendon sheath, it can be removed by cooperating with the cylindrical tendon sheath and the cutting sleeve, thereby achieving a cutting method that is relatively convenient to operate, effortless and accurate in cutting size, and has a simple structure and is convenient for widespread use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of the tendon cutting and rupture state in the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the cylindrical tendon sheath removal and cutting sleeve in the utility model;

[0017] Figure 3 The three-dimensional structure of the cylindrical tendon sheath in the utility model is shown in FIG. Figure 1 ;

[0018] Figure 4 The three-dimensional structure of the cylindrical tendon sheath in the utility model is shown in FIG. Figure 2 .

[0019] Reference numerals

[0020] A cylindrical tendon sheath 1 , a graft through groove 11 , a scale value 12 , an operating handle 13 , an operating block 131 , an anti-slip thread 132 , a cutting sleeve 2 , a cutting handle 21 , and an anti-slip pattern 22 . DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by patients with ordinary skills in the field without making creative work are within the scope of protection of the utility model.

[0022] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] The utility model provides a cylindrical closed-end tendon remover, including a cylindrical tendon sheath 1 used when a part of the quadriceps tendon is taken from the body as a cylindrical graft in a cruciate ligament reconstruction surgery of the knee joint, and a cutting sleeve 2 used to cut the cylindrical graft, the cylindrical tendon sheath 1 is hollow from the head to the tail and the hollow is cylindrical, the cutting sleeve 2 is hollow, the outer diameter of the cutting sleeve 2 is smaller than the inner diameter of the cylindrical tendon sheath 1 and the two are in a matching state, the cutting sleeve 2 can be extended from the hollow position of the tail of the cylindrical tendon sheath 1 to a position almost close to the head end, the cylindrical tendon sheath 1 is provided with a graft through groove 11 for graft removal, the head end of the cylindrical tendon sheath 1 is inclined, and the outer surface of the cylindrical tendon sheath 1 is provided with a scale value 12;

[0024] This device is specially designed for convenient removal of cylindrical tendons. During the removal process, the inclination of the first end of the cylindrical tendon sheath 1 is used as a reference. After the tendon is gradually cut to the required specified size through the cylindrical tendon sheath 1, it can be removed by cooperating with the cylindrical tendon sheath 1 and the cutting sleeve 2. The cutting method is relatively easy to operate, effortless and accurate in cutting size, and the structure is simple and convenient for wide use.

[0025] The device is a disposable product, which effectively avoids the risk of medical cross infection caused by repeated use of the device and effectively reduces medical costs and the economic burden on patients;

[0026] The improved device enhances the ability of the tendon retriever to cut and retrieve the tendon, thereby ensuring the quality of the retrieved tendon.

[0027] When medical staff remove the quadriceps tendon graft from the patient, they first make a 2-3 cm transverse skin incision on the upper edge of the patella, bluntly separate the subcutaneous tissue, and expose the connection between the quadriceps tendon and the upper edge of the patella.

[0028] Use a scalpel to free the quadriceps tendon located in the middle of the upper edge of the patella, determine the diameter of the free end of the graft according to the needs, and then use surgical sutures to weave the free end of the graft to play a role in traction and fixation. At this time, the suture of the free end of the graft is sent into the head end of the cylindrical tendon sheath 1 and sent out from the tail end of the cylindrical tendon sheath 1.

[0029] The medical staff pulls the suture to fix the free end of the graft with one hand, and holds the T-shaped operating handle 13 with the other hand, and gradually rotates the cylindrical tendon sheath 1 concentrically in the direction of the quadriceps tendon and pushes it forward until the cylindrical tendon sheath 1 cuts the graft to the required length of the scale value 12. The suture and the free graft are completely removed from the graft slot 11, and the cutting sleeve 2 is pushed from the end of the cylindrical tendon sheath 1 to the head end to cut the end of the graft connected to the quadriceps tendon, and the graft is completely removed.

[0030] This device is specially designed for convenient removal of cylindrical tendons. During the removal process, the inclination of the first end of the cylindrical tendon sheath 1 is used as a reference. After the tendon is gradually cut to the required specified size through the cylindrical tendon sheath 1, it can be removed by cooperating with the cylindrical tendon sheath 1 and the cutting sleeve 2. This realizes a cutting method that is relatively convenient to operate, effortless and precise in cutting size, and has a simple structure and is convenient for widespread use.

[0031] In a further preferred embodiment of the utility model, an operating handle 13 is provided at the end of the cylindrical tendon removal sheath 1, and an anti-slip thread 132 is provided on the outer surface of the operating handle 13;

[0032] Medical staff wear gloves when performing surgery, and the surface of the gloves is smooth, so it is easy to slip during the above process. An operating handle 13 is provided at the end of the cylindrical tendon sheath 1, and the outer surface of the operating handle 13 is provided with an anti-slip thread 132, which can facilitate medical staff to perform convenient operations, reduce the risk of slipping, and improve the quality of treatment.

[0033] In a further preferred embodiment of the utility model, two operating blocks 131 are symmetrically arranged on both sides of the operating handle 13, and the two operating blocks 131 and the operating handle 13 form a T-shaped arrangement;

[0034] The two operating blocks 131 and the operating handle 13 form a T-shaped setting, which can facilitate the rotation of the cylindrical tendon sheath 1 in the process of gradually cutting the tendon to the required specified size, reduce the risk of slipping, and thus improve the cutting effect. The T-shaped setting can provide a position for medical staff to apply shearing pressure when the cutting sleeve 2 is pushed into the cylindrical tendon sheath 1 to shear the tendon end, thereby improving the cutting effect.

[0035] In a further preferred embodiment of the utility model, a cutting handle 21 is provided at the end of the cutting sleeve 2, and an anti-slip pattern 22 is provided on the outer surface of the cutting handle 21;

[0036] A cutting handle 21 is provided at the end of the cutting sleeve 2, and an anti-slip pattern 22 is provided on the outer surface of the cutting handle 21, which can prevent the risk of medical staff slipping during operation, thereby improving the treatment effect.

[0037] In a further preferred embodiment of the utility model, the inclination angle of the head end of the cylindrical tendon sheath 1 is 15°;

[0038] The inclination angle of the first end of the cylindrical tendon sheath 1 is 15°, which can better facilitate the initial and gradual cutting effects of the cylindrical tendon sheath 1, effectively reduce the cutting resistance, and facilitate the operation.

[0039] In a further preferred embodiment of the utility model, the cylindrical tendon sheath 1 is taken as the starting scale by taking the first end position of the graft through groove 11 as the reference, and the scale value 12 is 9CM.

[0040] By setting the scale value 12, the required tendon can be cut to the required size according to the size of the scale value 12, thereby achieving cutting according to the specified length.

[0041] In a further preferred embodiment of the utility model, both sides of the graft through groove 11 are arc-shaped;

[0042] The graft through slot 11 is arranged in an arc shape, so that after a portion of the head end of the tendon is taken out and is located in the graft through slot 11, the tendon can be easily taken out and stretched.

[0043] In a further preferred embodiment of the present invention, the diameter of the closed end of the cylindrical tendon sheath 1 is of two specifications, 8 mm and 9 mm, so that the diameter of the graft obtained is of two specifications, 8 mm and 9 mm.

[0044] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A cylindrical closed-end tendon remover, characterized in that: include; Cylindrical tendon sheath used for use as a cylindrical graft when autologous quadriceps tendon is harvested during cruciate ligament reconstruction surgery of the knee (1); A cutting sleeve (2) for cutting a cylindrical implant; The cylindrical tendon sheath (1) is hollow from the head to the tail and the hollow part is cylindrical; the cutting sleeve (2) is hollow; the outer diameter of the cutting sleeve (2) is smaller than the inner diameter of the cylindrical tendon sheath (1) and the two are in a matching state; the cutting sleeve (2) can extend from the hollow position at the tail of the cylindrical tendon sheath (1) to a position almost close to the head; The cylindrical tendon sheath (1) is provided with a graft through groove (11) for graft removal, the head end of the cylindrical tendon sheath (1) is inclined, and the outer surface of the cylindrical tendon sheath (1) is provided with scale values ​​(12).

2. A cylindrical closed-end tendon remover as claimed in claim 1, characterized in that: An operating handle (13) is provided at the end of the cylindrical tendon removal sheath (1), and an anti-slip thread (132) is provided on the outer surface of the operating handle (13).

3. A cylindrical closed-end tendon remover as claimed in claim 2, characterized in that: Two operating blocks (131) are symmetrically arranged on both sides of the operating handle (13), and the two operating blocks (131) and the operating handle (13) form a T-shaped arrangement.

4. A cylindrical closed-end tendon remover as claimed in claim 1, characterized in that: A cutting handle (21) is provided at the end of the cutting sleeve (2), and an outer surface of the cutting handle (21) is provided with anti-slip patterns (22).

5. A cylindrical closed-end tendon remover as claimed in claim 1, characterized in that: The inclination angle of the head end of the cylindrical tendon sheath (1) is 15°.

6. A cylindrical closed-end tendon remover as claimed in claim 1, characterized in that: The first end position of the graft groove (11) on the cylindrical tendon sheath (1) is used as a reference starting scale, and the scale value (12) is 9CM.

7. A cylindrical closed-end tendon remover as claimed in claim 1, characterized in that: Both sides of the graft through groove (11) are arranged in an arc shape.

8. A cylindrical closed-end tendon remover as claimed in claim 1, characterized in that: The closed end of the cylindrical tendon sheath (1) has two specifications of diameter: 8 mm and 9 mm.

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