A rotary planing medical planer assembly and a medical planer

Abstract

This utility model discloses a rotary planing medical shaving shaving assembly and a medical planer, relating to the field of medical device technology. To address the problems of difficulty in cleaning the suction channel, leakage damaging the motor, and blockage of the inner blade tube caused by the integrated design of the planer blade and power handle in existing technologies, the following technical solution is proposed: A rotary planing medical shaving shaving assembly includes an outer blade handle and an outer blade sheath spliced ​​together. A tower-shaped spring is fitted on the outside of the outer blade sheath. The outer blade tube passes through the outer blade handle and the outer blade sheath. An inner blade tube is provided inside the outer blade tube. A driven gear is fixedly fitted at the tail of the inner blade tube. The driven gear meshes with the driving gear and is jointly fixed by an internal gear bracket. This utility model allows the outer blade tube to be removed, and the inner blade tube can be cleared using a special tool, thus ensuring the smooth progress of surgery. Furthermore, the medical shaving assembly is completely isolated from the motor, preventing leakage and damage to the motor in the handle.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a rotary planing medical planer assembly and a medical planer. Background Technology

[0002] With the continuous development of medical technology, medical shaving blades, as an important surgical instrument, have been widely used in many fields such as orthopedics, otolaryngology, and neurosurgery. Medical shaving blades are mainly used to remove diseased tissue. Their working principle involves the inner blade rotating or reciprocating within the outer blade to remove tissue that has entered the cutting window.

[0003] However, existing medical shaving tools still have some problems: First, most shaving tools integrate the shaving blade with the power handle, making it difficult to clean the suction channel after use and prone to clogging after repeated use; second, leakage is prone to occur when the suction tube passes through the handle, potentially damaging the motor and increasing operating costs; furthermore, even with a separate design, clogging of the inner blade tube frequently occurs during a single surgery, affecting the smooth progress of the procedure. These problems severely limit the clinical application effectiveness and lifespan of medical shaving tools.

[0004] For example, Chinese invention patent application number 202310395927.9 proposes a medical soft tissue shaving shaving blade assembly, which features a separate design for the shaving blade assembly and the driver, and alters the connection path of the negative pressure suction tube, effectively protecting the motor from damage. However, during a single surgery, blockage of the inner blade tube frequently occurs, requiring effective measures to address this problem.

[0005] Therefore, there is an urgent need for a rotary planer-type medical planer assembly and medical planer that is structurally sound, easy to clean, not prone to clogging, and effectively prevents leakage, in order to improve surgical efficiency and reduce usage costs. Utility Model Content

[0006] The purpose of this utility model is to provide a rotary planing medical planer assembly and a medical planer to solve the problems of difficult cleaning of the suction channel, leakage of the suction tube damaging the motor, and blockage of the inner blade tube caused by the integrated design of the planer blade and the power handle in the prior art.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] A rotary planing medical planer assembly includes an outer planer handle, an outer planer sleeve, a tower-shaped spring, a gear inner support, a drive gear, a transmission shaft, a driven gear, and an inner and outer planer tubes. The outer planer handle is the front end, and the outer planer handle is spliced ​​with the outer planer sleeve. A tower-shaped spring is sleeved on the outside of the outer planer sleeve. The outer planer tube passes through the outer planer handle and the outer planer sleeve. An inner planer tube is provided inside the outer planer tube. A driven gear is fixedly sleeved at the tail of the inner planer tube. The driven gear meshes with the drive gear and is jointly fixed by the gear inner support.

[0009] Furthermore, it also includes a handle housing, a gear front housing, and a gear rear housing. The gear front housing and the gear rear housing are fixedly installed inside the handle housing. A drive gear is sandwiched between the gear front housing and the gear rear housing. A drive shaft is installed through the gear front housing and the gear rear housing.

[0010] Furthermore, the tail end of the drive shaft is provided with Y-shaped meshing teeth.

[0011] Furthermore, it also includes a retaining ring, which is located at the tail of the handle housing.

[0012] Furthermore, it also includes a suction tube, with the tail end of the inner knife tube connected and fixed to the suction tube.

[0013] Furthermore, it also includes a motor assembly and a medical planer, the medical planer being detachably connected to this invention via the motor assembly.

[0014] Furthermore, the distal end of the inner blade tube is provided with a serrated cutting edge, and the distal end of the outer blade tube has a window with a cutting edge. From far to near, the distance from the distal end of the serrated cutting edge to the central axis of the inner blade tube is greater than the distance from its proximal end to the central axis of the inner blade tube, and the distance from the distal end of the window to the central axis of the outer blade tube is less than the distance from its proximal end to the central axis of the outer blade tube.

[0015] A medical planer, wherein the motor assembly is detachably connected to the rotary planing medical planer assembly via a snap-fit ​​structure.

[0016] This utility model has the following beneficial effects:

[0017] In the event of blockage of the inner blade tube during a single surgery, the outer blade tube can be removed, and the inner blade tube can be cleared using a special tool, thus ensuring the smooth progress of the surgery. This solves the problem of difficult-to-handle blockage of the inner blade tube in the prior art. In addition, the medical shaving blade assembly is completely isolated from the motor, avoiding leakage and damage to the motor in the handle. Furthermore, since the motor is detachable, it is easier to disinfect the motor, reducing the cost of use. Attached Figure Description

[0018] Figure 1 A cross-sectional view of a rotary planing medical planer assembly;

[0019] Figure 2 This is a schematic diagram of a rotary planing medical planer assembly.

[0020] Figure 3 A schematic diagram of the active gear meshing of a rotary planing medical planer assembly;

[0021] Figure 4 A schematic diagram showing the connection between a rotary planing medical planer assembly and a medical planer.

[0022] Figure 5 A schematic diagram of the internal blade edge structure of a rotary planing medical planer assembly;

[0023] Figure 6 A schematic diagram of the outer blade tube structure of a rotary planing medical planer assembly.

[0024] Figures 1 to 6 The reference numerals in the attached figures are respectively: 1-outer blade handle, 2-outer blade sheath, 3-tower spring, 4-inner gear support, 5-front gear housing, 6-drive gear, 7-drive shaft, 8-rear gear housing, 9-driven gear, 10-suction tube, 11-handle housing, 12-fixed ring, 13-motor assembly, 14-rotary planing medical planer assembly. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] As attached Figure 1 , 2 As shown, a rotary planing medical planer assembly includes an outer blade handle 1, an outer blade sleeve 2, a tower-shaped spring 3, a gear inner support 4, a driving gear 6, a transmission shaft 7, a driven gear 9, and an inner blade tube and an outer blade tube. The outer blade handle 1 is the front end, and the outer blade handle 1 is spliced ​​with the outer blade sleeve 2. The tower-shaped spring 3 is sleeved on the outside of the outer blade sleeve 2. The outer blade tube passes through the outer blade handle 1 and the outer blade sleeve 2. An inner blade tube is provided on the inside of the outer blade tube. The driven gear 9 is fixedly sleeved at the tail of the inner blade tube. The driven gear 9 meshes with the driving gear 6 and is jointly fixed by the gear inner support 4.

[0027] It also includes a handle housing 11, a gear front housing 5, and a gear rear housing 8. The gear front housing 5 and the gear rear housing 8 are fixedly installed inside the handle housing 11. A drive gear 6 is sandwiched between the gear front housing 5 and the gear rear housing 8. A drive shaft 7 is installed through the gear front housing 5 and the gear rear housing 8.

[0028] The tail of the drive shaft 7 is equipped with Y-shaped meshing teeth.

[0029] It also includes a retaining ring 12, which is located at the tail of the handle housing 11.

[0030] It also includes a suction tube, with the tail end of the inner knife tube connected and fixed to the suction tube 10.

[0031] The working principle of the rotary planing medical planer assembly in this embodiment is as follows: When a medical planing operation is required, the outer blade handle 1, as the front end, is spliced ​​with the outer blade sheath 2 to form a complete external structure. The tower-shaped spring 3 fitted on the outside of the outer blade sheath 2 provides appropriate elastic support, giving the outer blade a certain buffering capacity during use, reducing vibration during surgery, and improving surgical precision. The outer blade passes through the outer blade handle 1 and the outer blade sheath 2, forming a complete external channel.

[0032] Furthermore, the inner cutter tube is located inside the outer cutter tube, and a driven gear 9 is fixedly sleeved at the tail of the inner cutter tube.

[0033] As attached Figure 3 As shown, the driven gear 9 meshes with the driving gear 6 and is jointly fixed by the gear inner bracket 4 to ensure the stability of the gear transmission system. When the transmission shaft 7 rotates, the driving gear 6 drives the driven gear 9 to rotate, thereby driving the inner cutter tube to perform rotary planing motion.

[0034] The handle housing 11 serves as the external structure of the entire device, and a gear front housing 5 and a gear rear housing 8 are fixedly installed inside. A drive gear 6 is sandwiched between the gear front housing 5 and the gear rear housing 8, forming a closed gear transmission system. The drive shaft 7 passes through the gear front housing 5 and the gear rear housing 8, and its tail end has Y-shaped meshing teeth that connect with the power output shaft of the motor to realize the transmission of power.

[0035] The tail end of the inner blade tube is fixedly connected to the suction tube 10. When the inner blade tube performs reciprocating rotary cutting motion, the cut tissue fragments can be sucked out through the suction tube 10, keeping the surgical area clean and improving surgical efficiency.

[0036] As attached Figure 4 As shown, a medical planer has a motor assembly 13 that is detachably connected to a rotary planing medical planer assembly 14 via a snap-fit ​​structure.

[0037] As attached Figure 5 , 6As shown, the inner cutter tube has a serrated cutting edge at its distal end, and the outer cutter tube has a window with a cutting edge at its distal end. From far to near, the distance from the distal end of the serrated cutting edge to the central axis of the inner cutter tube is greater than the distance from its proximal end to the central axis of the inner cutter tube, while the distance from the distal end of the window to the central axis of the outer cutter tube is less than the distance from its proximal end to the central axis of the outer cutter tube. Therefore, a larger shearing angle can be formed between the cutting edges of the inner and outer cutter tubes, which is beneficial for the smooth planing of the tissue.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary planing medical planer assembly, characterized in that, The device includes an outer cutter tube handle (1), an outer cutter tube sleeve (2), a tower spring (3), a gear inner support (4), a driving gear (6), a transmission shaft (7), a driven gear (9), an inner cutter tube, and an outer cutter tube. The outer cutter tube handle (1) is positioned at the far end in the axial direction. The outer cutter tube handle (1) is spliced ​​with the outer cutter tube sleeve (2). The tower spring (3) is sleeved on the outside of the outer cutter tube sleeve (2). The outer cutter tube passes through the outer cutter tube handle (1) and the outer cutter tube sleeve (2). An inner cutter tube is provided on the inside of the outer cutter tube. The driven gear (9) is fixedly sleeved at the tail of the inner cutter tube. The driven gear (9) meshes with the driving gear (6) and is jointly fixed by the gear inner support (4).

2. The rotary planing medical planer assembly according to claim 1, characterized in that, It also includes a handle housing (11), a gear front housing (5), and a gear rear housing (8). The gear front housing (5) and the gear rear housing (8) are fixedly installed inside the handle housing (11). A drive gear (6) is sandwiched between the gear front housing (5) and the gear rear housing (8). The drive shaft (7) passes through the gear front housing (5) and the gear rear housing (8).

3. The rotary planing medical planer assembly according to claim 1, characterized in that, The tail of the drive shaft (7) is provided with Y-shaped meshing teeth.

4. The rotary planing medical planer assembly according to claim 2, characterized in that, It also includes a retaining ring (12), which is disposed at the tail of the handle housing (11).

5. The rotary planing medical planer assembly according to claim 1, characterized in that, It also includes a suction tube, the tail of which is connected and fixed to the suction tube (10).

6. The rotary planing medical planer assembly according to claim 1, characterized in that, The inner blade tube has a serrated cutting edge at its distal end, and the outer blade tube has a window with a cutting edge at its distal end. From far to near, the distance from the distal end of the serrated cutting edge to the central axis of the inner blade tube is greater than the distance from its proximal end to the central axis of the inner blade tube, and the distance from the distal end of the window to the central axis of the outer blade tube is less than the distance from its proximal end to the central axis of the outer blade tube.

7. A medical planer, characterized in that, It includes a motor assembly (13) and a rotary planer-type medical planer assembly (14) according to any one of claims 1 to 6, wherein the motor assembly (13) is detachably connected to the rotary planer-type medical planer assembly (14) via a snap-fit ​​structure.

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