Front cap structure for disposable sterile planing blade

Abstract

The utility model discloses a front cap structure for a disposable sterile planing tool head, and relates to the technical field of medical devices. The front cap structure is used for limiting the position of the disposable sterile planing tool head, and the disposable sterile planing tool head comprises a tool body and a limiting step, and the front cap structure comprises: a front cap body, and the front cap body is provided with a mounting hole along the axial direction; a bearing four, and the bearing four is arranged in the mounting hole, and the bearing four limits the tool body; a locking piece, and the locking piece is arranged on the front cap body, and when and only when the locking piece is locked, the locking piece and the bearing four are used to position the limiting step along the axial direction of the tool body; through the above structure, it can be directly installed and disassembled from the front end of the front cap structure, and there is no need to disassemble the front cap structure, so as to further save installation time and avoid the used planing tool head from causing pollution to the front cap structure or other parts of the planing tool.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a front cap structure for a disposable sterile planing tool head. Background Art

[0002] In the field of medical surgery, shavers are an important surgical instrument that is often used in orthopedic surgery to grind the edges of bones to make them flat and smooth, thereby facilitating subsequent surgical operations or implant fixation. Traditional shavers usually include a shaver body and a detachable shaver head, which allows doctors to replace shaver heads of different shapes and sizes according to surgical needs. However, this traditional design has some inherent problems and shortcomings.

[0003] First of all, the installation and removal process of the traditional planing blade is relatively cumbersome, requiring the doctor to first remove the front end of the planing blade, and then install and remove the planing blade. This process is not only time-consuming, increasing the time cost of the operation, but also prone to errors during the operation, affecting the accuracy and safety of the operation.

[0004] Secondly, because traditional planing heads need to frequently touch the front end of the planing tool during installation and removal, this increases the risk of contamination of other parts by the used planing heads. In a medical environment, any form of contamination may pose a potential threat to the health of patients, so reducing the risk of contamination is one of the important considerations in medical device design. Utility Model Content

[0005] The purpose of the utility model is to provide a front cap structure for a disposable sterile shaver head. By arranging a button and a button seat to cooperate with a pressing structure, the disposable sterile shaver head can be installed and disassembled from the front end of the front cap structure, thereby solving the problem that the installation and disassembly time of the shaver head is long, the operation time cost is increased, and the used shaver head is likely to cause contamination risks to other components.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A front cap structure for a disposable sterile shaver head is used to limit the position of the disposable sterile shaver head. The disposable sterile shaver head includes a cutter body and a limit step arranged on the cutter body. The front cap structure includes:

[0008] A front cap body, wherein the front cap body is provided with a mounting hole extending through the front cap body in the axial direction;

[0009] A bearing four, wherein the bearing four is disposed in the mounting hole, an inner ring of the bearing four is used to freely pass through the tail of the cutter body, and the bearing four is used to position the cutter body along the radial direction of the cutter body;

[0010] A locking piece, wherein the locking piece is arranged on the front cap body, and when and only when the locking piece is locked, the locking piece cooperates with the bearing four to axially limit the limiting step.

[0011] As a further solution of the present invention: the difference between the spacing between the locking member and the bearing four and the axial thickness of the limiting step is 0mm-0.5mm.

[0012] As a further solution of the utility model: the locking member includes:

[0013] A button seat, the button seat being mounted at one end of the front cap body;

[0014] A button, the button is mounted on the front cap body and connected to the button seat;

[0015] An elastic member is arranged between the button and the front cap body, and is used for the button to rebound and reset after being pressed.

[0016] As a further solution of the utility model: a mounting groove and a pressing groove are opened at one end of the front cap body, the mounting groove is connected to the pressing groove, the button seat is slidably arranged in the mounting groove, and the button is arranged in the pressing groove.

[0017] As a further solution of the utility model: the mounting hole includes a cutter head mounting hole, a second matching circular groove and a first matching circular groove which are opened inside the front cap body and connected in sequence; the cutter head mounting hole is arranged close to the button seat; the first matching circular groove and the second matching circular groove are used for assembling the planer knife body.

[0018] As a further solution of the utility model: a cooling and flushing system is also arranged on the front cap body, and the cooling and flushing system comprises an annular water channel 2 opened at one end of the front cap body away from the button seat, a water spraying water channel penetrating the front cap body is opened at the bottom of the groove of the annular water channel 2, and a water spraying port is arranged at the other end of the water spraying water channel.

[0019] As a further solution of the utility model: the button seat includes a moving body, one end of the moving body is connected to a button matching part, the other end of the moving body is connected to a connecting part, and an assembly hole is opened in the middle of the moving body.

[0020] As a further solution of the utility model: the diameter of the assembly hole is larger than the outer diameter of the upper limit step of the tool body.

[0021] As a further solution of the utility model: the difference between the spacing between the side surface of the movable body close to the bearing four and the side surface of the bearing four close to the movable body and the axial thickness of the limiting step is 0mm-0.5mm.

[0022] As a further solution of the utility model: the button includes a pressing body, a connecting body is arranged on one side of the pressing body, a connecting hole is opened in the center of the connecting body, and a ring groove is also opened on one side of the pressing body close to the connecting body, and the elastic member is arranged in the ring groove.

[0023] Beneficial effects of the utility model:

[0024] The utility model is provided with a front cap structure with a press-installation structure, and by manually pressing a button, the button squeezes the elastic part and the button seat, and the button seat moves outward, so that the tail of the knife body passes through the button seat and the front cap body and is installed into the fuselage assembly, and the disposable sterile planing tool head is directly installed and removed from the front end of the front cap structure without the need to disassemble the front cap structure, further saving installation time, reducing surgical time cost, and avoiding contamination of the front cap structure or other components by the used disposable sterile planing tool head, thereby reducing the risk of contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the installation structure of the disposable sterile planing tool head and the front cap structure of the utility model. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the installation structure of the disposable sterile planing tool head and the front cap structure of the utility model. Figure 2 ;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the front cap structure of the utility model;

[0029] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of the middle D area;

[0030] Figure 5 This is a schematic diagram of the cross-sectional structure of the front cap body of the utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the front cap body of the utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the button seat of the utility model;

[0033] Figure 8 It is a schematic diagram of the button structure of the utility model;

[0034] Fig. 9 This is a schematic diagram of the connection structure between the button and the button seat of the utility model;

[0035] Fig.10This is a schematic diagram of the water spray circuit structure of the utility model;

[0036] Fig.11 The utility model is a schematic diagram of the structure of a disposable sterile planing tool head.

[0037] In the figure: 21, front cap body; 210, annular water channel II; 211, mounting groove; 212, pressing groove; 213, first matching circular groove; 214, second matching circular groove; 215, cutter head mounting hole; 216, water spray port; 217, water spray waterway; 22, button seat; 221, button matching part; 222, moving body; 223, assembly hole; 224, connecting part; 23, button; 231, pressing body; 232, connecting body; 233, connecting hole; 234, annular groove; 24, bearing IV; 25, elastic member; 3, cutter body; 31, limiting step. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] Embodiment 1

[0040] like Figure 1 and Figure 2 As shown, this embodiment provides a front cap structure for a disposable sterile shaver head, which is used to limit the position of the disposable sterile shaver head. The disposable sterile shaver head in this embodiment is as shown in FIG. Fig.11 As shown, it includes a blade body 3 and a limiting step 31 arranged on the blade body 3. The blade body 3 is limitedly installed in the front cap structure by the limiting step 31.

[0041] Furthermore, the above-mentioned front cap structure includes a front cap body 21, and the front cap body 21 is provided with a mounting hole along the axial direction, and a bearing four 24 is provided in the mounting hole. The inner ring of the bearing four 24 is used to freely pass through the tail of the blade body 3 of the disposable sterile planing head, and the bearing four 24 is used to position the blade body 3 along the radial direction of the blade body 3; a locking piece is also provided on the front cap body 21, and when and only when the locking piece is locked, the locking piece cooperates with the bearing four 24 to axially limit the limiting step 31.

[0042] It should be noted that the locking member structure in this embodiment is not specifically limited, and can cooperate with the bearing four 24 to axially limit the limiting step 31, and can be a baffle structure or a pin structure, etc.

[0043] Embodiment 2

[0044] like Figure 1-Figure 10 As shown, based on the first embodiment, this embodiment provides a front cap structure for a disposable sterile shaver head, wherein the locking member includes a button seat 22 installed at one end of the head of the front cap body 21, one end of the button seat 22 passes through the front cap body 21 and is connected with a button 23, and an elastic member 25 is arranged between the button 23 and the front cap body 21, so that the button 23 can rebound and reset after being pressed.

[0045] Further as Figure 3 As shown, bearing four 24 is provided in multiple groups inside the front cap body 21, and the multiple groups cooperate to limit the position of the disposable sterile planing tool head inserted therein.

[0046] Specific as Figure 3 As shown, the above-mentioned cutter body 3 is inserted from the front end of the front cap body 21, passes through the button seat 22 and the bearing four 24 to be connected with the planer tool body, and transmission is performed, wherein the limiting step 31 on the cutter body 3 is nested in the front cap body 21, and the limiting step 31 is axially limited by the button seat 22 in a natural state, and the natural state refers to the static or default state of the button seat 22 in the absence of external force or external stimulation, and the button 23 is pressed to push the button seat 22 to move, releasing the limit on the limiting step 31, and the cutter body 3 can be disassembled from the front end.

[0047] The disposable sterile shaver head can be directly installed and removed from the front end of the front cap structure without disassembling the front cap structure, further saving installation time and avoiding contamination of the front cap structure or other parts of the shaver by the used shaver head. The disposable sterile shaver head installed from the front end can be stably limited and work normally through the limiting step 31.

[0048] Furthermore, if Figure 3-Figure 10 As shown, an annular water channel 210 is provided at the rear end of the front cap body 21 (i.e., the end away from the button seat 22), and a water spray channel 217 is provided at the bottom of the annular water channel 210, which is symmetrically arranged relative to the mounting hole and passes through the front cap body 21. A water spray port 216 connected to the water spray channel 217 is provided at the head of the front cap body 21. The cooling and flushing water is connected to the annular water channel 210 through the planer body, and then enters the water spray channel 217 and is sprayed out from the water spray port 216 to further cool the high-speed rotating cutter body 3, reduce the damage to the bone caused by the high-temperature cutter body 3, and flush the polished wound surface at the same time. In the utility model, the cooling and flushing water can be distilled water, physiological saline or special cutting fluid, wherein the special cutting fluid usually has better lubrication, cooling and flushing effects, and is specially treated to ensure sterility.

[0049] The annular water channel 210, the water spray channel 217 and the water spray port 216 constitute a cooling and flushing system. By combining with the cooling and flushing system of the planer knife body, the entire planer knife structure is cooled and the surgical site is flushed at the same time. In addition, by setting the annular water channel 210 on the front cap body 21, when installing the front cap structure, there is no need for precise alignment, and the water channel of the cooling and flushing system can be connected, so that the installation and disassembly of the front cap structure and the water channel connection of the cooling and flushing system do not interfere with each other.

[0050] Furthermore, if Figure 5-Figure 10 As shown, a mounting groove 211 is provided through the head of the front cap body 21, and the button seat 22 is slidably set in the mounting groove 211. A pressing groove 212 connected to the mounting groove 211 is provided on one side of the head of the front cap body 21, and the button 23 is set in the pressing groove 212, and a first matching circular groove 213, a second matching circular groove 214 and a cutter head mounting hole 215 are sequentially arranged inside the front cap body 21, wherein the first matching circular groove 213 and the second matching circular groove 214 are used for assembling the planer tool body.

[0051] like Figure 7 As shown, the button seat 22 also includes a moving body 222, a button matching portion 221 is connected to one end of the moving body 222, and a connecting portion 224 is connected to the other end. The button seat 22 is connected to the button 23 via the connecting portion 224, wherein an assembly hole 223 is also opened in the middle of the moving body 222, and the aperture of the assembly hole 223 is larger than the outer diameter of the upper limit step 31 of the blade body 3, so as to facilitate the insertion of the upper limit step 31 of the blade body 3 during installation.

[0052] like Figure 8 As shown, the button 23 includes a pressing body 231, a connecting body 232 is provided on one side of the pressing body 231, a connecting hole 233 is opened in the center of the connecting body 232, and the connecting hole 233 is adapted to the connecting portion 224 of the button seat 22 to realize the connection between the button 23 and the button seat 22, and an annular groove 234 is also opened on the inner side surface of the pressing body 231, and the above-mentioned elastic member 25 is arranged in the annular groove 234 to realize elastic force reset.

[0053] It should be further explained that the elastic member 25 in the present application is not limited to a specific structure, and can be a spring, or an elastic body with elasticity, etc.

[0054] The specific installation method of the disposable sterile planing tool head in this embodiment is:

[0055] By manually pressing the button 23, the button 23 squeezes the elastic member 25 and the button seat 22, and the button seat 22 moves outward to align the assembly hole 223 with the cutter head mounting hole 215, and the tail of the cutter body 3 passes through the button seat 22 and the front cap body 21 and is inserted into the planer body. After the installation is completed, the button 23 is released, and the button 23 and the button seat 22 are reset under the rebound of the elastic member 25. The assembly hole 223 in the reset button seat 22 is misaligned with the cutter head mounting hole 215. At this time, the button seat 22 and the bearing four 24 are respectively located on both sides of the limit step 31, thereby limiting the limit step 31 and preventing the cutter body 3 from falling off.

[0056] Furthermore, since the disposable sterile planing tool head is relatively slender, when the tool body 3 is inserted into the planing tool body, the entire tool body 3 is easily deflected due to the clearance fit relationship. When deflection occurs, the step surface of the limiting step 31 on the tool body 3 is easily against the corresponding bottom surface of the moving body 222 or the bearing four 24, resulting in the tool getting stuck.

[0057] For this reason Figure 3 and Figure 4 As shown, in this embodiment, a gap is reserved between the step surface of the limiting step 31 and the bottom surface of the bearing 24 or the moving body 222 to avoid the knife body 3 being deflected after installation due to the excessive length, so that the knife body 3 is not coaxial with the motor shaft, and then the knife body 3 is stuck in rotation;

[0058] Further, the above-mentioned gap is set to 0mm-0.5mm.

[0059] By leaving a gap between the step surface of the limiting step 31 and the bottom surface of the bearing four 24 or the movable body 222 (i.e., the difference between the side surface of the movable body 222 close to the bearing four 24 and the side surface of the bearing four 24 close to the movable body 222 and the axial thickness of the limiting step 31 is 0mm-0.5mm), the knife body 3 has sufficient space to rotate even if it is tilted after installation, thereby preventing the knife body 3 from being unable to rotate and being stuck in the front cap structure.

[0060] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A front cap structure for a disposable sterile shaver head, used for limiting the position of the disposable sterile shaver head, the disposable sterile shaver head comprising a shaver body (3) and a limiting step (31) arranged on the shaver body (3), characterized in that: The front cap structure comprises: A front cap body (21), wherein the front cap body (21) is provided with a mounting hole extending therethrough in the axial direction; A bearing four (24), wherein the bearing four (24) is arranged in the mounting hole, the inner ring of the bearing four (24) is used to freely pass through the tail of the knife body (3), and the bearing four (24) is used to position the knife body (3) along the radial direction of the knife body (3); A locking member, the locking member being arranged on the front cap body (21), and when and only when the locking member is locked, the locking member cooperates with the bearing four (24) to axially limit the limiting step (31); The locking member comprises: A button seat (22), the button seat (22) being mounted on one end of the front cap body (21); A button (23), the button (23) being mounted on the front cap body (21), and the button (23) being connected to the button seat (22); An elastic member (25), the elastic member (25) being arranged between the button (23) and the front cap body (21) and used for causing the button (23) to rebound and return to its original position after being pressed.

2. The front cap structure for a disposable sterile shaver head according to claim 1, characterized in that: The difference between the spacing between the locking member and the bearing four (24) and the axial thickness of the limiting step (31) is 0 mm to 0.5 mm.

3. The front cap structure for a disposable sterile shaver head according to claim 1, characterized in that: A mounting groove (211) and a pressing groove (212) are provided at one end of the front cap body (21); the mounting groove (211) is communicated with the pressing groove (212); the button seat (22) is slidably arranged in the mounting groove (211); and the button (23) is arranged in the pressing groove (212).

4. The front cap structure for a disposable sterile shaver head according to claim 3, characterized in that: The mounting hole comprises a cutter head mounting hole (215), a second matching circular groove (214) and a first matching circular groove (213) which are opened inside the front cap body (21) and are connected in sequence. The cutter head mounting hole (215) is arranged close to the button seat (22), and the first matching circular groove (213) and the second matching circular groove (214) are used for assembling the planer blade body.

5. The front cap structure for a disposable sterile shaver head according to claim 1, characterized in that: The front cap body (21) is also provided with a cooling and flushing system, the cooling and flushing system comprising an annular water channel 2 (210) opened at one end of the front cap body (21) away from the button seat (22), a water spraying channel (217) penetrating the front cap body (21) is opened at the bottom of the groove of the annular water channel 2 (210), and a water spraying port (216) is provided at the other end of the water spraying channel (217).

6. The front cap structure for a disposable sterile shaver head according to claim 1, characterized in that: The button seat (22) comprises a movable body (222), one end of the movable body (222) being connected to a button matching portion (221), the other end of the movable body (222) being connected to a connecting portion (224), and an assembly hole (223) being provided in the middle of the movable body (222).

7. The front cap structure for a disposable sterile shaver head according to claim 6, characterized in that: The diameter of the assembly hole (223) is larger than the outer diameter of the upper limit step (31) of the knife body (3).

8. The front cap structure for a disposable sterile shaver head according to claim 6, characterized in that: The difference between the spacing between the side surface of the movable body (222) close to the bearing four (24) and the side surface of the bearing four (24) close to the movable body (222) and the axial thickness of the limiting step (31) is 0 mm-0.5 mm.

9. The front cap structure for a disposable sterile shaver head according to claim 1, characterized in that: The button (23) comprises a pressing body (231), a connecting body (232) being provided on one side of the pressing body (231), a connecting hole (233) being provided at the center of the connecting body (232), and an annular groove (234) being provided on one side of the pressing body (231) close to the connecting body (232), the elastic member (25) being provided in the annular groove (234).

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