A reciprocating rotary cutting type medical planer tool assembly and a medical planer

Abstract

This utility model discloses a reciprocating rotary cutting medical planer assembly and a medical planer, relating to the field of medical device technology. To address the problems in existing technologies where the planer and power handle are integrated, leading to difficulties in cleaning and clogging of the suction channel, leakage through the handle causing motor damage, and blockage of the inner blade tube during a single surgery, the following technical solution is proposed: It includes an outer blade handle, an outer blade sheath, a tower-shaped spring, a reciprocating lead screw, a drive gear, a transmission shaft, a driven gear, and inner and outer blade tubes. The outer blade handle and outer blade sheath are joined together, with a tower-shaped spring fitted on the outside of the outer blade sheath. The outer blade tube passes through both the outer blade handle and the outer blade sheath. The inner blade tube is located inside the outer blade tube, with a driven gear fixedly fitted at its tail, meshing with the drive gear. This utility model has a compact structure, enabling reciprocating rotary cutting action and improving the efficiency and precision of medical planing.

Description

Technical Field

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

[0002] Currently, in gynecological surgery, the planer is widely used as an instrument to shave and cut lesion tissue. During surgery, the planer is inserted into the power handle to form a planing machine. The power handle provides power to the planer to remove the lesion tissue. During the removal process, a negative pressure suction device is connected through a negative pressure suction tube. Negative pressure is transmitted to the front end through the hollow inner blade tube, drawing the tissue into the incision. The outer blade tube remains stationary, while the inner blade tube rotates reciprocally under the drive of a motor, thereby cutting the soft tissue.

[0003] However, existing medical shaving tools still have the following problems: First, most existing shaving tools integrate the shaving blade with the power handle, making it difficult to clean the suction channel after use, easily clogging it and affecting subsequent use. Second, leakage is prone to occur through the inside of the handle, which can easily damage the motor in the handle and increase product usage costs. Furthermore, the inner blade tube is prone to clogging during a single surgery, and there is a lack of effective solutions, affecting the continuity and efficiency of the surgery. This problem is particularly prominent in cases requiring long surgeries, often necessitating interruptions for cleaning, prolonging the surgery time and increasing the risk to the patient.

[0004] Therefore, there is an urgent need for a medical shaving blade assembly that is structurally sound, easy to clean, and can effectively prevent clogging of the inner blade tube, in order to improve surgical efficiency and safety. Utility Model Content

[0005] The purpose of this utility model is to provide a reciprocating rotary cutting medical shaving shaving assembly and a medical shaving device to solve the problems in the prior art where the shaving blade and the power handle are designed as one unit, which makes the suction channel difficult to clean and easy to block, and the suction tube is prone to leakage through the inside of the handle, which can damage the motor, and the inner blade tube is easy to block during a single operation.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A reciprocating rotary cutting medical shaving shaving assembly includes an outer blade handle, an outer blade sleeve, a tower-shaped spring, a reciprocating screw, a drive gear, a transmission shaft, a driven gear, an inner blade tube, and an outer blade tube. The outer blade handle is positioned at the front end in the axial direction. The outer blade handle is spliced ​​with the outer blade sleeve. A tower-shaped spring is fitted on the outer side of the outer blade sleeve. The outer blade tube passes through the outer blade handle and the outer blade sleeve. 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 drive gear. A connecting block is provided at the front end of the driven gear. A reciprocating pin is provided inside the connecting block. The reciprocating pin is engaged in the double helical groove of the reciprocating screw. A drive gear is fitted on the outer side of the transmission shaft.

[0008] 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.

[0009] Furthermore, a reciprocating lead screw is provided at the front end of the drive shaft, and the drive shaft and the reciprocating lead screw are an integral structure, and a Y-shaped meshing tooth is provided at the rear end of the drive shaft.

[0010] Furthermore, a retaining ring is located at the tail of the handle housing.

[0011] Furthermore, it also includes a suction tube, with the tail end of the inner knife tube connected and fixed to the suction tube.

[0012] Furthermore, it also includes a second snap-fit ​​part and a medical planer, the medical planer being detachably connected to this utility model via the second snap-fit ​​part.

[0013] A medical shaving tool includes a motor assembly and a reciprocating rotary cutting medical shaving blade assembly, wherein the motor assembly is detachably connected to the reciprocating rotary cutting medical shaving blade assembly via a snap-fit ​​structure.

[0014] This utility model has the following beneficial effects:

[0015] This invention features a detachable outer blade tube. If the inner blade tube becomes blocked during a single surgery, the outer blade tube can be removed, and the blockage cleared using specialized tools, ensuring the smooth progress of the surgery and solving the problem of surgical interruption caused by blockage in existing technologies. Furthermore, by placing the suction tube within a disposable medical shaving assembly and completely isolating it from the motor, leakage through the handle prevents damage to the motor, extending product lifespan and reducing operating costs. The detachable motor design also facilitates motor sterilization, improving the efficiency of medical device sterilization. Attached Figure Description

[0016] Figure 1This is a cross-sectional view of the reciprocating rotary cutting medical shaving blade assembly.

[0017] Figure 2 This is a schematic diagram of the reciprocating rotary cutting medical planer assembly.

[0018] Figure 3 This is a schematic diagram of the drive shaft engagement of a reciprocating rotary cutting medical planer assembly;

[0019] Figure 4 This is a schematic diagram showing the connection between the reciprocating rotary cutting medical planer assembly and the motor assembly.

[0020] Figures 1 to 4 The reference numerals in the attached figures are respectively: 1-outer blade handle, 2-outer blade sheath, 3-tower spring, 4-reciprocating lead screw, 5-gear front housing, 6-drive gear, 7-drive shaft, 8-gear rear housing, 9-driven gear, 10-suction tube, 11-handle housing, 12-fixed ring, 13-reciprocating pin, 14-motor assembly, 15-reciprocating rotary cutting medical shaving blade assembly. Detailed Implementation

[0021] 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.

[0022] Example 1:

[0023] As attached Figure 1 , 2 As shown, a reciprocating rotary cutting medical shaving shaving assembly includes an outer blade handle 1, an outer blade sleeve 2, a tower-shaped spring 3, a reciprocating screw 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 positioned at the front end in the axial direction. 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 inside 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. A connecting block is provided at the front end of the driven gear 9. A reciprocating pin 13 is provided inside the connecting block. The reciprocating pin 13 is engaged in the double helical groove of the reciprocating screw 4. The driving gear 6 is sleeved on the outside of the transmission shaft 7.

[0024] 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.

[0025] The front end of the drive shaft 7 is provided with a reciprocating lead screw 4, and the drive shaft 7 and the reciprocating lead screw 4 are an integral structure. The rear end of the drive shaft 7 is provided with Y-shaped meshing teeth.

[0026] It also includes a retaining ring 12, which is located at the tail of the handle housing 11.

[0027] It also includes a suction tube, and a suction tube 10, with the tail end of the inner knife tube connected and fixed to the suction tube 10.

[0028] It also includes a second snap-fit ​​part 14 and a medical planer 15, which is detachably connected to the present invention through the second snap-fit ​​part 14.

[0029] In this embodiment, the reciprocating rotary cutting medical shaving blade assembly 15 works by driving the drive gear 6 to rotate via the transmission shaft 7. The drive gear 6 meshes with the driven gear 9, causing the driven gear 9 to rotate. The reciprocating pin 13, located inside the connecting block at the front end of the driven gear 9, engages with the double helical groove of the reciprocating lead screw 4. When the transmission shaft 7 rotates, the reciprocating pin 13 moves within the double helical groove, causing the inner blade tube to reciprocate while rotating, thus driving the inner blade tube to perform a reciprocating rotary cutting motion to cut the tissue.

[0030] The splicing structure design of the outer cutter tube handle 1 and the outer cutter tube sleeve 2 allows the outer cutter tube to be securely connected to the planer assembly. Meanwhile, the tower-shaped spring 3 fitted on the outside of the outer cutter tube sleeve 2 provides appropriate elastic support, enhancing the stability and comfort of the planer assembly during use. The outer cutter tube passes through both the outer cutter tube handle 1 and the outer cutter tube sleeve 2, forming a complete external protective structure. The inner cutter tube is located inside the outer cutter tube, and the two form a coaxial structure, allowing the inner cutter tube to perform reciprocating rotary cutting motion within the outer cutter tube.

[0031] The handle housing 11, as the external structure of the entire planer assembly, provides a good grip and ease of operation. The gear front housing 5 and gear rear housing 8, fixedly mounted inside the handle housing 11, form a closed gear transmission cavity, protecting the normal operation of the gear transmission system and preventing external impurities from affecting the transmission effect. A drive gear 6 is sandwiched between the gear front housing 5 and the gear rear housing 8, enabling the drive gear 6 to rotate stably. The transmission shaft 7 passes through both the gear front housing 5 and the gear rear housing 8, ensuring the stability and reliability of the transmission system.

[0032] As attached Figure 3As shown, the front end of the drive shaft 7 is a reciprocating lead screw 4, which is the key component for realizing reciprocating motion. The double helical groove on the reciprocating lead screw 4 cooperates with the reciprocating pin 13 to convert rotational motion into reciprocating motion. The Y-shaped meshing tooth design at the tail end of the drive shaft 7 facilitates connection with an external power source (such as a motor) to realize power input. The Y-shaped meshing tooth design increases the stability of the connection and the transmission efficiency.

[0033] Furthermore, a fixing ring 12 is provided at the tail of the handle housing 11. The outer surface of the fixing ring 12 is uniformly provided with a plurality of radially outward protrusions, so that the sterile bag can be put into the tail and fixed on the fixing ring to provide sterile protection for the motor assembly.

[0034] As attached Figure 4 As shown, a medical planer includes a motor assembly 14 and a reciprocating rotary cutting medical planer assembly. The motor assembly 14 is detachably connected to the reciprocating rotary cutting medical planer assembly via a snap-fit ​​structure.

[0035] The suction tube 10 is fixedly connected to the tail of the inner blade tube, forming a continuous channel. During the operation of the medical shaving blade, the cut tissue fragments can be suctioned out through the inner blade tube and the suction tube 10, keeping the surgical area clean and improving surgical efficiency and safety. The design of the suction tube 10 allows the shaving blade assembly to be connected to an external suction device to form a complete surgical system.

[0036] In practical applications, the reciprocating rotary cutting medical shaving shaving assembly is used as follows: First, connect the shaving assembly to an external power source (such as a motor), with the motor's output shaft engaging with the Y-shaped meshing teeth of the transmission shaft 7; then connect the suction tube 10 of the shaving assembly to an external suction device; the operator holds the handle housing 11 and brings the front end of the outer blade tube of the shaving assembly close to the tissue to be cut; start the motor, which drives the drive gear 6 to rotate via the transmission shaft 7, and the drive gear 6 drives the driven gear 9 to rotate. The reciprocating pin 13 in the connecting block at the front end of the driven gear 9 moves within the double helical groove of the reciprocating screw 4, causing the inner blade tube to generate a reciprocating rotary cutting motion to cut the tissue; the cut tissue fragments are sucked out through the inner blade tube and the suction tube 10.

[0037] The reciprocating rotary cutting medical shaving shaving assembly has the following advantages due to its structural design: compared with simple rotary cutting, the reciprocating rotary cutting motion can cut tissue more effectively and reduce tissue pulling and damage; the gear transmission system provides stable power transmission and ensures consistent cutting results; the coaxial design of the outer and inner blade tubes, as well as the support of the tower spring 3, improves the stability and operating accuracy of the shaving shaving assembly; and the design of the suction tube 10 allows the cut tissue to be removed in a timely manner, keeping the surgical area clean.

[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 reciprocating rotary cutting medical shaving blade assembly, characterized in that, The device includes an outer cutter tube handle (1), an outer cutter tube sleeve (2), a tower spring (3), a reciprocating lead screw (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 front 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). The outer blade sleeve (2) is provided with an inner blade sleeve inside the outer blade sleeve. The driven gear (9) is fixedly sleeved at the tail of the inner blade sleeve. The driven gear (9) meshes with the driving gear (6). A connecting block is provided at the front end of the driven gear (9). A reciprocating pin (13) is provided inside the connecting block. The reciprocating pin (13) is inserted into the double spiral groove of the reciprocating screw (4). The driving gear (6) is sleeved on the outside of the transmission shaft (7).

2. The reciprocating rotary cutting medical shaving blade 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 reciprocating rotary cutting medical shaving blade assembly according to claim 1, characterized in that, The front end of the drive shaft (7) is provided with the reciprocating lead screw (4), and the drive shaft (7) and the reciprocating lead screw (4) are an integral structure. The tail end of the drive shaft (7) is provided with Y-shaped meshing teeth.

4. The reciprocating rotary cutting medical shaving blade 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 reciprocating rotary cutting medical shaving blade 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. A medical planer, characterized in that, It includes a motor assembly (14) and a reciprocating rotary cutting medical shaving blade assembly (15) according to any one of claims 1 to 5, wherein the motor assembly (14) is detachably connected to the reciprocating rotary cutting medical shaving blade assembly (15) via a snap-fit ​​structure.

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