Bone wax applicator for spine endoscope

Abstract

The invention discloses a bone wax applicator for a spine endoscope, and relates to the technical field of medical instruments. The device comprises a sleeve and a push rod, a hollow handle is arranged at one end of the sleeve, a limiting long hole is formed in the side wall of the handle, a smearing block is arranged at the other end of the sleeve, and a protrusion in the axis direction of the sleeve is arranged at the outer end of the smearing block. The push rod is inserted into the sleeve and the handle, the push rod is of a solid rod-shaped structure, one end of the push rod is connected with a limiting rod arranged in the limiting long hole in a penetrating mode, and a spherical ejector block is arranged at the other end of the push rod. Compared with the prior art, the bone wax pushing and smearing device can solve the problems that an existing bone wax pushing and smearing device is too large in occupied space, complex in structure and poor in adaptability.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a bone wax applicator for spinal endoscopy. Background Technology

[0002] Bone surface bleeding is a common intraoperative situation in spinal endoscopic surgery. Timely and effective hemostasis is crucial for ensuring a clear surgical field, reducing intraoperative bleeding, and lowering the risk of postoperative complications. Bone wax, as a commonly used hemostatic material, needs to be pushed to the bleeding site and compacted using specialized instruments to achieve the best hemostatic effect. However, existing instruments for pushing or applying bone wax have significant shortcomings in meeting the needs of spinal endoscopic surgery. Specific problems are as follows: 1. Excessive size, unable to fit the space of spinal endoscope: Since spinal endoscopes only have a narrow operating channel with an inner diameter of 5mm to 6mm at the handle, some existing bone wax pushing and applying instruments have a curved overall structure, which takes up a lot of space and is difficult to insert into the narrow operating space of spinal endoscope surgery, thus failing to meet the requirements of precise operation under endoscopy; there are also bone wax applicators suitable for scenarios such as ear endoscopy, although they have a metal universal tube with an adjustable bending angle, the overall size of the handle and the tube is too large, which is only suitable for relatively spacious surgical environments and cannot fit the compact operating space of spinal endoscopes.

[0003] 2. Complex structure, only able to push bone wax but not effectively apply it: Some bone wax injection devices contain many parts, have a complex structure and are difficult to assemble. They can only push bone wax from the wax outlet into the endoscopic field of view, but cannot perform subsequent application and compaction of bone wax. The bone wax cannot fully adhere to the bleeding area on the bone surface, resulting in poor hemostasis.

[0004] 3. Poor adaptability and inability to cope with the water-flushing environment of spinal endoscopy: During the operation, continuous water flushing is required to maintain a clear field of vision. However, some existing bone wax delivery instruments do not take this characteristic into account. Their delivery structure is easily affected by the water flow, causing the bone wax to be pushed off course. Furthermore, due to the lack of a dedicated coating structure, the bone wax is easily washed away by the water flow after being pushed out, making it impossible to adhere stably to the bleeding site and further reducing the hemostatic effect.

[0005] In summary, the existing technology lacks a bone wax application instrument that is adapted to the space of a spinal endoscope, has a simple structure, can achieve precise delivery and effective application of bone wax, and is suitable for the water-flushing surgical environment of spinal endoscopy. There is an urgent need to improve the design to address the above-mentioned deficiencies. Summary of the Invention

[0006] The purpose of this invention is to provide a bone wax applicator for spinal endoscopy, which can solve the problems of existing bone wax push-and-apply devices having excessive space occupation, complex structure, and poor adaptability.

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows: This bone wax applicator for spinal endoscopy includes a sleeve and a push rod; one end of the sleeve is provided with a hollow handle, and the side wall of the handle is provided with a limiting elongated hole; the other end of the sleeve is provided with an applicator block, and the outer end of the applicator block is provided with a protrusion in the direction of the sleeve axis; the push rod is inserted into the sleeve and the handle, the push rod is a solid rod-shaped structure, one end of the push rod is connected to a limiting rod inserted in the limiting elongated hole, and the other end of the push rod is provided with a spherical top block.

[0008] A more specific technical solution than the above-mentioned technical solution is that the outer end of the limiting rod is connected to a locking nut located on the outside of the handle.

[0009] Furthermore, the protruding portion at the outer end of the coating block is arc-shaped.

[0010] Furthermore, the sleeve has a length of 310mm to 320mm, an outer diameter of 3mm to 3.2mm, and an inner diameter of 2mm to 2.2mm.

[0011] Furthermore, the length of the handle is 130 mm to 150 mm, and the outer diameter and inner diameter of the handle are larger than the outer diameter and inner diameter of the sleeve, respectively.

[0012] Furthermore, the length of the push rod is 370mm to 380mm and the diameter is 1.1mm to 1.3mm, and the diameter of the spherical top block is 1.5mm to 1.7mm.

[0013] Furthermore, the length of the application block is 10mm to 11mm, and the thickness of the top of the protrusion is 1.5mm to 1.6mm.

[0014] By adopting the above technical solution, the present invention has the following advantages compared with the prior art: 1. This invention has no complex curved structure or redundant connecting parts, which reduces the space occupied by the instrument, reduces the risk of interference with the endoscope lens and other surgical instruments, and can be easily inserted into the narrow operating space of spinal endoscopic surgery, meeting the requirements of precise operation under endoscopy and solving the problem that existing instruments are too large to be compatible.

[0015] 2. This invention has a simple structure, is easy to operate, has low assembly difficulty and low failure rate. Medical staff only need to push the locking nut to push the bone wax. By rotating the handle, the bone wax can be applied and compacted with the application block, so that the bone wax can fully adhere to the bleeding area of ​​the bone surface and achieve a good hemostatic effect. The limiting hole limits the movement stroke of the push rod, avoiding excessive pushing of the push rod that would lead to waste of bone wax or tissue damage, thus improving the safety of operation.

[0016] 3. The combination of the cannula and the push rod can reduce the amount of water entering the cannula and prevent the bone wax from being washed away by the water flow; the application and compaction effect of the smearing block can make the bone wax adhere tightly to the bone surface, resist the influence of water on the position of the bone wax, and ensure that a stable hemostatic effect can still be maintained in the surgical environment of continuous water flushing. This makes the present invention well adapted to the water flushing environment of spinal endoscopy and highly stable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 The left view; Figure 3 This is a schematic diagram of the sleeve structure; Figure 4 yes Figure 3 Cross-sectional view at point AA; Figure 5 This is a schematic diagram of the push rod. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; however, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] Example 1: like Figures 1 to 5 The spinal endoscope bone wax applicator shown includes a cannula 1 and a push rod 2. One end of the cannula 1 is provided with a hollow handle 3, and the side wall of the handle 3 is provided with a limiting elongated hole 3-1. The other end of the cannula 1 is provided with an applicator block 4, and the outer end of the applicator block 4 is provided with a protrusion 4-1 in the direction of the axis of the cannula 1. The protrusion 4-1 is arc-shaped. The push rod 2 is inserted into the cannula 1 and the handle 3. The push rod 2 is a solid rod structure. One end of the push rod 2 is connected to a limiting rod 5 inserted in the limiting elongated hole 3-1. The other end of the push rod 2 is provided with a spherical top block 6.

[0022] The outer end of the limiting rod 5 is connected to the locking nut 7 located outside the handle 3. The locking nut 7 has a cylindrical structure. The outer end of the limiting rod 5 is provided with an external thread section, and the locking nut 7 is provided with an internal thread that is compatible with the external thread section. The limiting rod 5 and the locking nut 7 are connected by threads, which can facilitate disassembly and adjustment of the position of the locking nut 7.

[0023] The sleeve 1 has a length L1 of 310 mm, an outer diameter R1 of 3 mm, and an inner diameter R2 of 2 mm. The handle 3 has a length L2 of 130 mm, and its outer and inner diameters are larger than those of the sleeve 1, respectively. The push rod 2 has a length L3 of 370 mm and a diameter R3 of 1.1 mm. The spherical top block 6 has a diameter R4 of 1.5 mm. The applicator block 4 has a length L4 of 10 mm, and the top thickness D1 of the protrusion 4-1 is 1.5 mm.

[0024] Example 2: The sleeve 1 has a length L1 of 315 mm, an outer diameter R1 of 3.1 mm, and an inner diameter R2 of 2.1 mm. The handle 3 has a length L2 of 140 mm, and its outer and inner diameters are larger than those of the sleeve 1, respectively. The push rod 2 has a length L3 of 375 mm and a diameter R3 of 1.2 mm. The spherical top block 6 has a diameter R4 of 1.6 mm. The applicator block 4 has a length L4 of 10 mm, and the top thickness D1 of the protrusion 4-1 is 1.5 mm.

[0025] Other features are the same as in Example 1.

[0026] Example 3: The sleeve 1 has a length L1 of 320 mm, an outer diameter R1 of 3.2 mm, and an inner diameter R2 of 2.2 mm. The handle 3 has a length L2 of 150 mm, and its outer and inner diameters are larger than those of the sleeve 1, respectively. The push rod 2 has a length L3 of 380 mm and a diameter R3 of 1.3 mm. The spherical top block 6 has a diameter R4 of 1.7 mm. The applicator block 4 has a length L4 of 11 mm, and the top thickness D1 of the protrusion 4-1 is 1.6 mm.

[0027] Other features are the same as in Example 1.

[0028] In use, bone wax 8 is placed inside the cannula 1 near the end of the application block 4. The medical staff, holding the handle 3, inserts the cannula 1 into the surgical area through the operating channel of the spinal endoscope. The protrusion 4-1 of the application block 4 is aligned with the bleeding site on the bone surface. The locking nut 7 is pushed with the thumb, causing it to move axially along the limiting elongated hole 3-1, thereby moving the push rod 2. The spherical top block 6 pushes the bone wax 8 out of the cannula 1. Then, the handle 3 is rotated, causing the protrusion 4-1 to apply and compact the bone wax 8 to the bleeding site on the bone surface, ensuring stable adhesion of the bone wax 8 and achieving good hemostasis. After hemostasis is achieved, the cannula 1 is removed from the operating channel of the endoscope, completing the procedure.

[0029] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A bone wax applicator for spinal endoscopy, characterized in that: It includes a sleeve and a push rod; one end of the sleeve is provided with a hollow handle, and the side wall of the handle is provided with a limiting elongated hole; the other end of the sleeve is provided with an applicator block, and the outer end of the applicator block is provided with a protrusion in the direction of the sleeve axis; the push rod is inserted into the sleeve and the handle, and the push rod is a solid rod-shaped structure; one end of the push rod is connected to a limiting rod inserted in the limiting elongated hole, and the other end of the push rod is provided with a spherical top block.

2. The bone wax applicator for spinal endoscopy according to claim 1, characterized in that: The outer end of the limiting rod is connected to a locking nut located on the outside of the handle.

3. The bone wax applicator for spinal endoscopy according to claim 1 or 2, characterized in that: The raised portion at the outer end of the coating block is arc-shaped.

4. The bone wax applicator for spinal endoscopy according to claim 3, characterized in that: The sleeve has a length of 310mm to 320mm, an outer diameter of 3mm to 3.2mm, and an inner diameter of 2mm to 2.2mm.

5. The bone wax applicator for spinal endoscopy according to claim 4, characterized in that: The length of the handle is 130mm to 150mm, and the outer diameter and inner diameter of the handle are larger than the outer diameter and inner diameter of the sleeve, respectively.

6. The bone wax applicator for spinal endoscopy according to claim 5, characterized in that: The push rod has a length of 370mm to 380mm and a diameter of 1.1mm to 1.3mm, while the spherical top block has a diameter of 1.5mm to 1.7mm.

7. The bone wax applicator for spinal endoscopy according to claim 6, characterized in that: The length of the coating block is 10mm to 11mm, and the thickness of the top of the protrusion is 1.5mm to 1.6mm.

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