Sheath-tearable type inner package of pedicle screw auxiliary sleeve and use method of sheath-tearable type inner package

Abstract

The invention discloses a pedicle screw auxiliary sleeve tearable sheath type inner package and a using method thereof, and relates to the technical field of medical instruments, the pedicle screw auxiliary sleeve tearable sheath type inner package comprises a sheath tube and an auxiliary line, the outer surface of the sheath tube is provided with a marking line, the left side of the marking line is marked with a length mark, and the auxiliary line is arranged on the outer surface of the sheath tube. And the auxiliary line is perpendicular to the identification line. According to the tearable sheath type inner package of the pedicle screw auxiliary sleeve and the using method of the tearable sheath type inner package, the length is marked on the sheath tube, so that the using requirements of screws with different lengths are met, and length errors caused by naked eye observation and material waste are reduced; and through the packaging form of the tearable sheath, not only is the dismounting difficulty during an operation reduced, but also the protection effect on the auxiliary sleeve is improved. And when the sheath-tearable inner package is used, the required length of the auxiliary sleeve is obtained according to the measured hole depth, and the sheath tube is torn to the required length, so that the whole operation process is simple and convenient, and the starting difficulty is low.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a tearable sheath-type inner package of a pedicle screw auxiliary sleeve and a using method thereof. Background Art

[0002] Osteoporosis is a disease that causes bone to lose its structural integrity by reducing mineral density and altering the bone formation / resorption mechanism, resulting in an increased susceptibility to fractures. Vertebral fractures associated with osteoporosis also occur in the spine and may require vertebroplasty (VP) for bone cement filling or surgical fixation using hardware (i.e., pedicle screws and rods). Due to the loss of trabecular bone, the screw strength in osteoporotic bone is affected, and thus various techniques have been developed to improve the fixation effect, such as using a pedicle screw auxiliary sleeve to enhance the screw stability in osteoporotic vertebrae. The current packaging of the auxiliary sleeve on the market is mainly a paper-plastic bag, and the auxiliary sleeve is knitted from polyethylene terephthalate (PET) with low strength. Moreover, the current using method mainly estimates the length of the screw visually and then cuts the corresponding auxiliary sleeve, which is likely to cause errors in length estimation due to parallax and other reasons, affecting the use of the auxiliary sleeve. Summary of the Invention

[0003] The purpose of the present invention is to provide a tearable sheath-type inner package of a pedicle screw auxiliary sleeve and a using method thereof to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] On the one hand, a tearable sheath-type inner package of a pedicle screw auxiliary sleeve is provided, including a sheath tube and an auxiliary line. A marking line is arranged on the outer surface of the sheath tube, and a length marking is marked on the left side of the marking line. The auxiliary line is arranged on the outer surface of the sheath tube and is perpendicular to the marking line.

[0006] Further, the number of the marking lines is ten, and the ten marking lines are equidistantly arranged starting from the head of the sheath tube, and a length marking is correspondingly arranged on the left side of each marking line. The marking line is parallel to the tail edge line of the sheath tube.

[0007] Further, the length marking is marked on the sheath tube in digital form to indicate the length of the auxiliary sleeve required for screws of different lengths.

[0008] Further, one end of the auxiliary line starts from the head of the sheath tube, and the other end of the auxiliary line extends to the tail of the sheath tube.

[0009] On the other hand, a method of using a tearable sheath inner packaging of a pedicle screw assist sleeve is provided, which is applied to the tearable sheath inner packaging of the pedicle screw assist sleeve as described above, and includes the following steps:

[0010] S1. Measure the hole depth: Determine the depth of the hole where the pedicle screw needs to be implanted by means of CT scan or intraoperative determination. This step is crucial for determining the length of the required assist sleeve.

[0011] S2. Determine the length of the required assist sleeve: Based on the hole depth measured in the previous step, obtain the length of the required pedicle screw assist sleeve. Combine the marking line and length marking on the sheath tube, and tear the sheath tube along the auxiliary line to the required length. The tearing action must be steady and uniform to ensure that the edge of the assist sleeve is neat and will not cause inconvenience during use.

[0012] S3. Use the assist sleeve: Put the torn assist sleeve on the pedicle screw, and then implant the screw into the pedicle according to the standard surgical procedure.

[0013] S4. Complete the surgery: After the screw is successfully implanted, remove the assist sleeve as needed and complete the remaining part of the surgery.

[0014] Further, in the step S1, the specific operation of measuring the hole depth by means of CT scan: Perform a preoperative CT scan, find the film at the widest part of the pedicle, that is, the pedicle axis film, and measure the length of the pedicle axis line on the pedicle axis film. Take about 80% of the axis line length as the implant depth of the screw to obtain the hole depth information. In addition, CT scan can also be used postoperatively to evaluate whether the screw penetrates the pedicle or vertebral body and the degree of penetration.

[0015] Further, in the step S1, the specific operation of measuring the hole depth by means of intraoperative determination: During the surgery, first implant a positioning guide needle or a Kirschner wire into the pedicle, and confirm the position and depth of the guide needle through C-arm fluoroscopy. Then, tap the thread and use a probe to explore the four walls again to confirm the position, and compare the length of the probe with the length of the screw to ensure the correct screw length.

[0016] Further, in the step S4, the assist sleeve must fit tightly on the screw, will not slip or move, and provide support and guidance during the screw implantation process.

[0017] The present invention provides a tearable sheath inner packaging of a pedicle screw assist sleeve and its use method, which have the following beneficial effects:

[0018] The present invention overcomes the deficiencies in the prior art and provides a tearable sheath-type inner package for a pedicle screw auxiliary sleeve with length markings. By marking the length on the sheath tube, it meets the requirements for using screws of different lengths, reduces the length error caused by visual observation, and waste of materials. Through the packaging form of the tearable sheath, it not only reduces the difficulty of disassembly during surgery but also improves the protection of the auxiliary sleeve. And when using this tearable sheath-type inner package, only by obtaining the required length of the auxiliary sleeve according to the measured hole depth and tearing the sheath tube to the required length, the whole operation process is simple and convenient, and the operation difficulty is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic structural diagram of a tearable sheath-type inner package of a pedicle screw auxiliary sleeve of the present invention;

[0020] Figure 2 FIG. is a schematic step flow diagram of the usage method of a tearable sheath-type inner package of a pedicle screw auxiliary sleeve of the present invention.

[0021] In the figure: 1. Sheath tube; 2. Marking line; 3. Length marking; 4. Auxiliary line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but cannot be used to limit the scope of the present invention.

[0023] As Figure 1 shown, a tearable sheath-type inner package of a pedicle screw auxiliary sleeve includes a sheath tube 1 and an auxiliary line 4. A marking line 2 is provided on the outer surface of the sheath tube 1, and a length marking 3 is marked on the left side of the marking line 2. The number of marking lines 2 is ten, and the ten marking lines 2 are equidistantly arranged starting from the head of the sheath tube 1. And a length marking 3 is correspondingly provided on the left side of each marking line 2. The marking line 2 is parallel to the tail edge line of the sheath tube 1. The equidistant and parallel design enables doctors to better grasp the tearing degree when tearing the sheath tube 1, which helps them accurately and conveniently tear the sheath tube 1 to the required length, improving the usability of the auxiliary sleeve. The length marking 3 is marked on the sheath tube 1 in digital form and is used to indicate the length of the auxiliary sleeve required for screws of different lengths. The auxiliary line 4 is provided on the outer surface of the sheath tube 1, and the auxiliary line 4 is perpendicular to the marking line 2. One end of the auxiliary line 4 starts from the head of the sheath tube 1, and the other end of the auxiliary line 4 extends to the tail of the sheath tube 1. The design of the auxiliary line 4 is to provide a reference line for doctors when tearing the sheath tube.

[0024] As Figure 2 shown, a usage method of a tearable sheath-type inner package of a pedicle screw auxiliary sleeve, which is applied to the tearable sheath-type inner package of a pedicle screw auxiliary sleeve as described above, includes the following steps:

[0025] S1. Measure the hole depth: Determine the depth of the hole where the pedicle screw needs to be implanted by means of CT scan or intraoperative determination. This step is crucial for determining the length of the required auxiliary sleeve.

[0026] In this embodiment, if the CT scan method is adopted, the specific operation is as follows: Conduct a preoperative CT scan, find the film at the widest part of the pedicle, that is, the pedicle axis film, and measure the length of the pedicle axis line on the pedicle axis film. Take about 80% of the axis line length as the implant depth length of the screw to obtain the hole depth information. In addition, the CT scan can also be used postoperatively to evaluate whether the screw penetrates the pedicle or the vertebral body and the degree of penetration.

[0027] In this embodiment, if the intraoperative determination method is adopted, the specific operation is as follows: During the operation, first implant a positioning guide needle or a Kirschner wire into the pedicle, and confirm the position and depth of the guide needle through C-arm fluoroscopy. Then, after tapping and using a probe to explore the four walls again to confirm the position, compare the length of the probe with the length of the screw to ensure the correct screw length.

[0028] S2. Determine the length of the required auxiliary sleeve: Based on the hole depth measured in the previous step, obtain the length of the required pedicle screw auxiliary sleeve. Combine the marking line 2 and the length marking 3 on the sheath tube 1, and tear the sheath tube 1 along the auxiliary line 4 to the required length. The tearing action must be stable and uniform to ensure that the edge of the auxiliary sleeve is neat and will not cause inconvenience during use.

[0029] S3. Use the auxiliary sleeve: Put the torn auxiliary sleeve on the pedicle screw, and then implant the screw into the pedicle according to the standard surgical procedure. Among them, the auxiliary sleeve must fit tightly on the screw, will not slip or move, and provide support and guidance during the screw implantation process.

[0030] S4. Complete the operation: After the screw is successfully implanted, remove the auxiliary sleeve as needed and complete the rest of the operation.

[0031] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A tearable sheath-type inner package of a pedicle screw auxiliary sleeve, comprising a sheath tube (1) and an auxiliary wire (4), characterized in that: The outer surface of the sheath tube (1) is provided with a marking line (2), and a length mark (3) is marked on the left side of the marking line (2); the auxiliary line (4) is provided on the outer surface of the sheath tube (1), and the auxiliary line (4) and the marking line (2) are perpendicular to each other.

2. The tearable sheath type inner packaging of the pedicle screw auxiliary sleeve according to claim 1, characterized in that: The number of the identification lines (2) is ten, and the ten identification lines (2) are arranged at equal distances with the head of the sheath tube (1) as the starting point, and a length mark (3) is correspondingly arranged on the left side of each identification line (2), and the identification line (2) is parallel to the rear edge line of the sheath tube (1).

3. The tearable sheath type inner packaging of the pedicle screw auxiliary sleeve according to claim 1, characterized in that: The length mark (3) is marked on the sheath tube (1) in digital form, and is used to indicate the auxiliary sleeve length required for screws of different lengths.

4. The tearable sheath type inner packaging of the pedicle screw auxiliary sleeve according to claim 1, characterized in that: One end of the auxiliary line (4) takes the head of the sheath tube (1) as a starting point, and the other end of the auxiliary line (4) extends to the tail of the sheath tube (1).

5. A method for using a tearable sheath inner package of a pedicle screw auxiliary sleeve, applied to the tearable sheath inner package of a pedicle screw auxiliary sleeve as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Measure the hole depth: Use CT scanning or intraoperative determination to determine the depth of the hole where the pedicle screw needs to be implanted; S2. Determine the required length of the auxiliary sleeve: According to the hole depth measured in the previous step, the required length of the auxiliary sleeve of the pedicle screw is obtained, and the sheath tube (1) is torn to the required length along the auxiliary line (4) in combination with the marking line (2) and the length marking (3) on the sheath tube (1); S3. Use the auxiliary sleeve: Put the torn auxiliary sleeve on the pedicle screw, and then implant the screw into the pedicle according to the standard surgical procedure.

6. The method for using the tearable sheath type inner packaging of the pedicle screw auxiliary sleeve according to claim 5, characterized in that: In step S1, the specific operation of measuring the hole depth by CT scanning is as follows: perform a preoperative CT scan to find the film of the widest part of the pedicle, that is, the pedicle axis film, and measure the length of the pedicle axis line on the pedicle axis film, and take 80% of the axis line length as the implantation depth of the screw to obtain the hole depth information.

7. The method for using the tearable sheath type inner packaging of the pedicle screw auxiliary sleeve according to claim 5, characterized in that: In step S1, the specific operation of measuring the hole depth is carried out by intraoperative determination: during the operation, a positioning guide pin or a Kirschner wire is first implanted into the pedicle, and the position and depth of the guide pin are confirmed by C-arm fluoroscopy. After that, the thread is tapped and the four walls are probed with a probe again to confirm the position, and then the length of the probe is compared with the length of the screw.

8. The method for using the tearable sheath type inner packaging of the pedicle screw auxiliary sleeve according to claim 5, characterized in that: In step S4, the auxiliary sleeve must fit tightly on the screw without slipping or moving, and provide support and guidance during the screw implantation process.

9. The method for using the tearable sheath type inner packaging of the pedicle screw auxiliary sleeve according to claim 1, characterized in that: Also includes the steps: S4. Completion of the surgery: After the screws are successfully implanted, remove the auxiliary sleeves as needed and complete the rest of the surgery.

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