Sternum fixing band

Abstract

The utility model discloses a sternum fixing band which comprises a lock head, a band body and a metal hook fixedly connected with the band body, the lock head and the band body are integrally formed, a lock hole is formed in the lock head, first lock teeth are formed in the lock hole, a fixing part is arranged on the band body, second lock teeth are formed on the fixing part, and the metal hook is fixedly connected with the band body. The fixing part can be bent and penetrate into the lock hole, and the first lock tooth can be meshed with the second lock tooth to fix the lock head and the belt body; the metal hook is fixedly connected with the end, away from the lock head, of the belt body, and the metal hook enables the belt body to penetrate through the chest more conveniently in an operation. By arranging the lock head, the fixing part matched with the lock head and the metal hook fixedly connected with the belt body, the sternum can be fixed more conveniently in the suturing process, and damage to intercostal soft tissue is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a sternum fixing belt. Background Art

[0002] At present, the median sternotomy is the preferred approach for most cardiac surgeries at home and abroad. The median sternotomy can achieve the best exposure of the surgical field. At the end of the operation, the closure and re-fixation of the left and right halves of the sternum are generally done with wire sutures. After repeatedly and continuously penetrating the soft tissue of the sternal intercostal space and tying and tightening it, the sutures are fixed by tightening and tying with wire cutters. According to years of clinical practice, due to the thin wire, this tying and fixing method can easily cause sternal cutting, resulting in sternal opening or mediastinal infection, especially in the elderly and osteoporosis patients, and in children due to their thin bones. When the wire is used for tying and fixing, if it is tightened too tight, it will cause sternal fracture. If it is loose, the sternal stability is poor, and the child may have pigeon chest. In addition, the wire is also prone to cause a series of problems such as bleeding and fracture of the bone marrow cavity and tissue. If the wire is twisted improperly during surgery, it is easy for the wire to break and must be removed and re-sutured.

[0003] The invention patent of "An orthopedic binding strap locking and fixing device" with publication number CN203524752U solves the unpredictable risks brought to patients by the previous method of closing and re-fixing the left and right halves of the sternum after surgery with metal wire sutures, and also shortens the doctor's operation time and reduces the workload. However, during the use of the patent application, since there is no other protective structure outside the serrations of the fixing part, and the front transition zone of the flexible belt inlaid with the suture needle is short and wide, excessive damage is caused to the soft tissue when the suture needle guides the flexible belt to penetrate the intercostal soft tissue. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a sternum fixation belt, which can reduce the damage and discomfort to the patient's body when the fixation belt is used during surgery.

[0005] The utility model is realized by the following technical solutions:

[0006] A sternum fixation belt, characterized in that it comprises a lock, a belt body and a metal hook fixedly connected to the belt body;

[0007] The lock head is fixedly connected to the belt body, a lock hole is provided in the lock head, a first fixing portion is formed in the lock hole, and a first sawtooth is formed on the first fixing portion;

[0008] The belt body includes a second fixing portion, the second fixing portion is provided with a second sawtooth, the second sawtooth extends inward from the surface of the second fixing portion to prevent the second sawtooth from protruding outside the surface, the second width of the second sawtooth is smaller than the first width of the belt body, the second fixing portion can be bent and inserted into the lock hole and at the same time the first sawtooth can mesh with the second lock tooth to fix the lock head to the belt body;

[0009] The metal hook is fixedly connected to one end of the belt body away from the locking head, and the metal hook can make the belt body pass through the sternum more conveniently during surgery.

[0010] Furthermore, the cross-section of the locking hole is a trumpet shape that gradually expands outward from the joint surface.

[0011] Furthermore, a third sawtooth is formed on the first fixing portion, and the third sawtooth is arranged near the lock surface forming the lock head to facilitate the insertion of the belt body.

[0012] Furthermore, the first height of the third sawtooth is lower than the second height of the first sawtooth, so as to facilitate the insertion of the second fixing portion.

[0013] Furthermore, the number of the first saw teeth is 2 to 4.

[0014] Furthermore, the lock head and the belt body are both made of PEEK material.

[0015] Furthermore, the first width of the belt body is 4 mm to 5 mm, the first thickness is 1.5 mm to 2.5 mm, and the second width of the second saw teeth is 3 mm to 4 mm.

[0016] Furthermore, the third width of the lock hole is 4 mm to 5 mm, and the third width is greater than the first width.

[0017] Furthermore, the belt body also includes a connecting portion, one end of the connecting portion is fixedly connected to the second fixing portion, and the other end of the connecting portion is fixedly connected to the metal hook, and the connecting portion is designed to be gradually narrowed from the second fixing portion to the metal hook, so as to facilitate guiding the belt body to be inserted into the lock hole.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] 1. By providing the second sawtooth inwardly on the belt body, the second sawtooth is prevented from protruding outside the surface, so that the fixing belt will not cause more damage to the human body due to the sawtooth structure when in use.

[0020] 2. By providing a stainless steel metal hook connected to the belt body, the fixing belt can pass through the human body more conveniently, which is convenient for surgery.

[0021] 3. By setting the connecting part to a shape that gradually narrows from the second fixing part to the metal hook, the cable tie can be tightened more conveniently and quickly during surgery, and the damage to the intercostal soft tissue during the suturing process is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of a sternum fixing belt of the utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of some structures;

[0024] Figure 3 for Figure 2 sectional view of .

[0025] Explanation of reference numerals: 1. Lock head; 2. Belt body; 3. Metal hook; 4. Connecting part; 10. First fixing part; 20. Second fixing part; 6. Lock hole; 7. Cone; 8. Surface; 11. Lock surface; 30. Root; 13. Joint; 100. First serration; 200. Second serration; 102. Third serration; L1. First width; L2. Second width; L3. Third width; L5. Length; d1. Thickness; h1. First height; h2. Second height; h3. Third height. DETAILED DESCRIPTION

[0026] The following is a further non-restrictive detailed description of the utility model technical solution in conjunction with the preferred embodiment and its accompanying drawings. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limitations on the utility model.

[0027] like Figures 1 to 3As shown, the utility model comprises a sternum fixing belt including a lock head 1, a belt body 2 and a metal hook 3 fixedly connected to the belt body 2. The lock head 1 is generally square, and the lock head 1 and the belt body 2 are integrally formed. A lock hole 6 is provided in the lock head 1, and a first fixing portion 10 is formed in the lock hole 6. A first serration 100 is formed on the first fixing portion 10. The cross section of the lock hole 6 is a trumpet shape that gradually expands outward from the interface 13, which is convenient for inserting the belt body 2 and accommodating the deformation of the first fixing portion 10. A third serration 102 is also integrally formed on the first fixing portion 10, and the third serration 102 is arranged near the lock surface 11 forming the lock head 1 to facilitate the insertion of the belt body 2.

[0028] A second fixing portion 20 is provided on the belt body 2. The second fixing portion 20 is in the shape of an elongated strip. The second fixing portion 20 is provided with a second serration 200. The second serration 200 extends inward from the surface 8 of the second fixing portion 20 to prevent the second serration 200 from protruding beyond the surface 8. At the same time, the second width L2 of the second serration 200 is smaller than the first width L1 of the belt body 2 to prevent the second serration 200 from being exposed to the outside, thereby reducing damage to the human body during surgery. The second fixing portion 20 can be bent and inserted into the locking hole 6, and at the same time, the first serration 100 can mesh with the second serration 200 and fix the lock head 1 to the belt body 2.

[0029] Specifically, the third width L3 of the lock head 1 is 4 mm to 5 mm.

[0030] Specifically, the number of the first saw teeth 100 is 2 to 4, and preferably, the number of the first saw teeth 100 is 3.

[0031] Specifically, the first height h1 of the third saw tooth 102 is shorter than the second height h2 of the first saw tooth 100, so as to facilitate the insertion of the second fixing portion 20. Preferably, the first height h1 is between 0.45 mm and 0.50 mm, and the second height h2 is between 0.55 mm and 0.65 mm; the third height h3 of the second saw tooth 200 is also between 0.55 mm and 0.65 mm, and the second height h2 is consistent with the third height h3, so as to ensure that the first saw tooth 100 and the second saw tooth 200 can be perfectly meshed.

[0032] Specifically, the first width L1 of the belt body 2 is 4 mm to 5 mm, the thickness d1 is 1.5 mm to 2.5 mm, the second width L2 of the second serration 200 is 3 mm to 4 mm, the length L5 of the second fixing portion 20 is between 160 mm and 170 mm, and the third width L3 is greater than the first width L1 to facilitate the insertion of the belt body 2 into the lock hole 6.

[0033] Preferably, the lock head 1 and the belt body 2 are both made of PEEK material.

[0034] The metal hook 3 is fixedly connected to one end of the belt body 2 away from the lock head 1. The metal hook 3 can make it easier for the belt body 2 to pass through the sternum during surgery. Preferably, the metal hook 3 is made of a cylinder with a sharpened front end and then bent.

[0035] Specifically, the belt body 2 also includes a connecting portion 4, one end of which is integrally formed with the second fixing portion 20, and the other end of the connecting portion 4 is fixedly connected to the metal hook 3, and the connecting portion 4 is designed to be gradually narrowed from the second fixing portion 20 to the metal hook 3, so as to facilitate guiding the belt body 2 to be inserted into the lock hole 6.

[0036] Specifically, a cone 7 is integrally formed at the top of the connecting portion 4, and during injection molding, the root 30 of the metal hook 3 is embedded in the cone 7, so that the metal hook 3 is connected to the connecting portion 4. Preferably, the metal hook 3 is made of stainless steel.

[0037] Follow the steps below when using:

[0038] Step 1: After the thoracotomy is completed, the original median longitudinal split sternum is arranged in order.

[0039] Step 2: Clamp the connection part 4 of the sterilized sternum fixation strap with surgical forceps, control the metal hook 3 to pass through the soft tissue of the intercostal space on both sides of the sternum and guide the binding strap to wrap around the sternum to form a semicircular ring. Note that the second fixing part 20 should be on the inner side of the semicircular ring.

[0040] Step 3: Cut off the connecting part 4, remove the metal hook 3 and discard it.

[0041] Step 4: Pass the head end of the connecting portion 4 through the locking hole 6 through the locking head 1, pull the first serration 100 and the second serration 200 to engage with each other, and then rotate the locking head 1 to the sternal intercostal space on either side.

[0042] Step 5: Use auxiliary tools to tighten the binding straps and lock them tightly, then cut off the excess parts and discard them.

[0043] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A sternum fixation belt, characterized in that: It comprises a lock head (1), a belt body (2), and a metal hook (3) fixedly connected to the belt body (2); The lock head (1) is fixedly connected to the belt body (2), a lock hole (6) is provided in the lock head (1), a first fixing portion (10) is formed in the lock hole (6), and a first sawtooth (100) is formed on the first fixing portion (10); The belt body (2) comprises a second fixing portion (20), the second fixing portion (20) is provided with a second sawtooth (200), the second sawtooth (200) extends inward from a surface (8) of the second fixing portion (20) to prevent the second sawtooth (200) from protruding outside the surface (8), the second width (L2) of the second sawtooth (200) is smaller than the first width (L1) of the belt body (2), the second fixing portion (20) can be bent and inserted into the lock hole (6) and at the same time the first sawtooth (100) can mesh with the second sawtooth (200) to fix the lock head (1) and the belt body (2); The metal hook (3) is fixedly connected to one end of the belt body (2) away from the lock head (1), and the metal hook (3) can make it easier for the belt body (2) to pass through the sternum during surgery.

2. The sternum fixation belt according to claim 1, characterized in that: The cross section of the locking hole (6) is a trumpet shape that gradually expands outwards from the connecting surface (13).

3. The sternum fixation belt according to claim 2, characterized in that: A third sawtooth (102) is also formed on the first fixing portion (10), and the third sawtooth (102) is arranged near the lock surface (11) of the lock head (1) to facilitate the insertion of the belt body (2).

4. The sternum fixation belt according to claim 3, characterized in that: The first height (h1) of the third saw tooth (102) is lower than the second height (h2) of the first saw tooth (100), so as to facilitate the insertion of the second fixing portion (20).

5. The sternum fixation belt according to claim 1, characterized in that: The number of the first saw teeth is 2 to 4.

6. The sternum fixation belt according to claim 1, characterized in that: The lock head (1) and the belt body (2) are both made of PEEK material.

7. The sternum fixation belt according to claim 1, characterized in that: The first width (L1) of the belt body (2) is 4 mm to 5 mm, the first thickness (d1) is 1.5 mm to 2.5 mm, and the second width (L2) of the second sawtooth (200) is 3 mm to 4 mm.

8. The sternum fixation belt according to claim 7, characterized in that: The third width (L3) of the locking hole (6) is 4 mm to 5 mm, and the third width (L3) is greater than the first width (L1).

9. The sternum fixation belt according to claim 1, characterized in that: The belt body (2) further comprises a connecting portion (4), one end of the connecting portion (4) being fixedly connected to the second fixing portion (20), and the other end of the connecting portion (4) being fixedly connected to the metal hook (3), and the connecting portion (4) being designed to be gradually narrowed in a direction from the second fixing portion (20) to the metal hook (3), so as to facilitate guiding the belt body (2) to be inserted into the lock hole (6).

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