CN119770119B - Sheath stepless adjustment mechanism and medical grinding device - Google Patents
Sheath stepless adjustment mechanism and medical grinding deviceInfo
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- CN119770119B CN119770119B CN202411994834.9A CN202411994834A CN119770119B CN 119770119 B CN119770119 B CN 119770119B CN 202411994834 A CN202411994834 A CN 202411994834A CN 119770119 B CN119770119 B CN 119770119B
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- adjusting
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Abstract
The application relates to a sheath stepless adjusting mechanism and a medical grinding device, wherein a sheath adjusting assembly drives an axial adjusting sleeve to move along an axial direction and enables an elastic piece to deform in a self-adaptive mode so as to stepless adjust the axial position of the sheath assembly, and when an unlocking limiting body rotates to a locking position, the axial adjusting sleeve is axially locked so as to lock the axial position of the sheath assembly. The application can realize stepless automatic adjustment of the sheath, thereby more efficiently and safely carrying out grinding operation and improving the product performance.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to a sheath stepless adjusting mechanism and a medical grinding device.
Background
The grinding head with the sheath in the related art has the advantage that the positions of the sheath and the grinding head along the axial direction are relatively adjustable. By adjusting the position of the sheath along the axial direction, the relative movement between the sheath and the grinding head can be formed, and the sawing depth of the grinding head can be controlled. However, the related art grater with a sheath has only a manual adjustment of the sheath function, and thus, the grater is inconvenient to operate and has low safety when being ground.
Disclosure of Invention
Based on the above, it is necessary to overcome the defects of the prior art and provide a sheath stepless adjusting mechanism and a medical grinding device, which can improve the operation convenience and safety.
A sheath stepless adjustment mechanism connected with a sheath assembly, comprising:
a handle assembly;
The unlocking limiting body is rotatably arranged on the handle body assembly and provided with a locking position and an unlocking position, and the unlocking limiting body can rotate between the locking position and the unlocking position;
The axial adjusting sleeve is arranged on the handle body assembly and can move along the axial direction, and is matched with the unlocking limiting body;
One end of the sheath adjusting component is connected with the axial adjusting sleeve, the other end of the sheath adjusting component is connected with the sheath component,
When the unlocking limiting body rotates to the unlocking position, the sheath adjusting assembly drives the axial adjusting sleeve to move along the axial direction and enables the elastic piece to deform in a self-adaptive mode so as to adjust the position of the sheath assembly in the axial direction steplessly, and when the unlocking limiting body rotates to the locking position, the axial adjusting sleeve is locked in the axial direction.
In one embodiment, the unlocking limiting body comprises an unlocking limiting sleeve, a first movable concave part extending along the circumferential direction and a second movable concave part extending along the axial direction are arranged at the far end of the unlocking limiting sleeve, a first side of the first movable concave part along the circumferential direction is communicated with the second movable concave part and corresponds to the unlocking position, a second side of the first movable concave part along the circumferential direction is corresponding to the locking position, and a limiting part is arranged at the near end of the axial adjusting sleeve and can move along the first movable concave part and the second movable concave part.
In one embodiment, the inlet of the second movable recess comprises an arcuate transition wall on a side proximate to the first movable recess.
In one embodiment, the handle body component is provided with a first annular groove arranged along the circumferential direction of the handle body component, the inner wall of the unlocking limiting sleeve is provided with a first flange, the first flange is movably arranged in the first annular groove, and/or the inner wall of the unlocking limiting sleeve is provided with a second annular groove arranged along the circumferential direction of the unlocking limiting sleeve, the handle body component is provided with a second flange, and the second flange is movably arranged in the second annular groove.
In one embodiment, the handle body assembly comprises a handle body main body, a first support sleeve and a second support sleeve, wherein the first support sleeve is fixedly sleeved in the handle body main body, the distal end of the first support sleeve extends out of the handle body main body, the unlocking limiting sleeve is rotatably sleeved on the distal end of the first support sleeve, the second support sleeve is fixedly sleeved in the first support sleeve, the distal end of the second support sleeve extends out of the first support sleeve, the axial adjusting sleeve is movably arranged on the second support sleeve along the axial direction, the elastic piece is a spring, the spring is sleeved outside the second support sleeve, and two opposite ends of the elastic piece are respectively in butt joint with the proximal end of the axial adjusting sleeve and the first support sleeve.
In one embodiment, the sheath stepless adjusting mechanism further comprises an outer cover, the outer cover is arranged outside the unlocking limiting body and connected with the unlocking limiting body, and the outer cover is further rotatably arranged outside the proximal end of the axial adjusting sleeve and the proximal end of the sheath adjusting assembly.
In one embodiment, the sheath stepless adjusting mechanism further comprises an elastic sleeve sleeved on the outer part of the handle body assembly;
the outer cover is provided with a first alignment mark, and the outer wall of the handle body assembly is provided with a second alignment mark corresponding to the first alignment mark.
In one embodiment, the sheath adjusting assembly comprises a manual adjusting shell and a movable sleeve, wherein the manual adjusting shell is rotatably sleeved outside the axial adjusting sleeve, and the manual adjusting shell is relatively fixed with the axial adjusting sleeve in position along the axial direction;
The manual adjusting device comprises a manual adjusting shell, a sheath assembly, a movable sleeve, a protective sheath, a manual adjusting shell and a movable sleeve, wherein the movable sleeve is arranged in the manual adjusting shell and is used for being connected with the protective sheath assembly, the manual adjusting shell is connected with the movable sleeve, the movable sleeve can be driven to adjust the position along the axial direction when the manual adjusting shell rotates, and the movable sleeve is relatively fixed with the manual adjusting shell along the axial direction when the manual adjusting shell does not rotate.
In one embodiment, a third guide part in spiral shape is formed on the inner wall of the manual adjustment shell, a fourth guide part is arranged on the outer wall of the movable sleeve, a sliding groove extending in parallel to the axial direction is formed on the side wall of the axial adjustment sleeve, the fourth guide part slidably penetrates through the sliding groove, and the fourth guide part is matched with the third guide part.
In one embodiment, the sheath stepless adjusting mechanism further comprises a limiting shell, the limiting shell is detachably arranged at the far end of the axial adjusting sleeve, the limiting shell and the far end of the sheath adjusting assembly are mutually abutted and matched along the axial direction, a protruding portion is arranged on the outer wall of the axial adjusting sleeve, and the protruding portion and the near end of the sheath adjusting assembly are mutually abutted and matched along the axial direction.
The medical grinding device comprises a sheath stepless adjusting mechanism, a sheath assembly, an outer cutter assembly, an inner cutter assembly and a connecting shaft, wherein the sheath assembly is sleeved outside the outer cutter assembly, the proximal end of the sheath assembly is connected with the sheath adjusting assembly, the outer cutter assembly is fixedly connected with the handle assembly, the inner cutter assembly rotatably penetrates through the outer cutter assembly, the inner cutter assembly is connected with the connecting shaft, and the connecting shaft is used for being connected with a power rotating shaft of a motor.
According to the sheath stepless adjusting mechanism and the medical grinding device, in the use process, when the unlocking limiting body rotates to the locking position, the unlocking limiting body limits the axial adjusting sleeve to move along the axial direction, and at the moment, the position of the sheath assembly along the axial direction can be adjusted by operating the sheath adjusting assembly in a manual adjusting mode; when the unlocking limiting body rotates to the unlocking position, the axial adjusting sleeve can move along the axial direction and enable the elastic piece to adaptively deform, at the moment, the position of the sheath assembly along the axial direction can be adjusted in a manual adjusting mode, stepless adjustment of the sheath assembly along the axial direction can be achieved, specifically, when the sheath assembly is stressed along the axial direction, the sheath assembly drives the sheath adjusting assembly to move along the axial direction, the sheath adjusting assembly correspondingly drives the axial adjusting sleeve to move along the axial direction and enable the elastic piece to adaptively deform, namely, the sheath assembly adaptively and axially freely stretches and stretches under the action of the elastic force of the elastic piece, and stepless automatic position adjustment is achieved. Therefore, the sheath assembly can be adjusted in two modes, the sheath can be manually adjusted, stepless automatic adjustment of the sheath can be realized, grinding operation can be more efficiently and safely carried out, and the product performance is improved.
Drawings
Fig. 1 is a block diagram of a medical grinding apparatus according to an embodiment of the present application.
Fig. 2 is an enlarged structural view of fig. 1 at a.
Fig. 3 is an enlarged structural view of fig. 1 at B.
Fig. 4 is an enlarged structural view of fig. 1 at C.
Fig. 5 is a block diagram of a sheath stepless adjustment mechanism in the device shown in fig. 1.
Fig. 6 is a structural view of the unlocking limiting body in the structure shown in fig. 5.
10. The sheath stepless adjusting mechanism comprises a sheath stepless adjusting mechanism, 11, a handle body assembly, 111, a first annular groove, 112, a handle body, 113, a first supporting sleeve, 1131, a second boss, 114, a second supporting sleeve, 1141, a fourth boss, 1142, a second guiding part, 115, a third supporting sleeve, 1151, a first boss, 1152, a third boss, 116, a bearing, 117, a first elastic ring, 118, a third annular groove, 12, an unlocking limiting body, 121, a first movable concave part, 122, a second movable concave part, 123, an arc transition wall, 124, a first flange, 13, an elastic piece, 14, an axial adjusting sleeve, 141, a limiting piece, 142, a protruding part, 143, a fifth boss, 144, a first guiding part, 145, a sliding groove, 15, a manual adjusting shell, 151, a third guiding part, 16, a moving sleeve, 161, a fourth guiding part, 162, a mounting groove, 17, an outer cover, 18, an elastic sleeve, 191, a second elastic ring, 192, a limiting shell, 20, a sheath assembly, 21, a sheath assembly, 22, a sheath assembly, a cutter bar assembly, a cutter head, and a cutter assembly.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, the proximal end refers to the end of the instrument or the component close to the operator, the distal end refers to the end of the instrument or the component far away from the operator, the axial direction refers to the direction parallel to the connecting line between the distal end and the proximal end of the instrument or the component, the radial direction refers to the direction perpendicular to the axial direction, and the circumferential direction refers to the direction around the axial direction. The axial direction in this embodiment refers to the direction shown by Z in fig. 1 and 5.
Referring to fig. 1 and 5, an embodiment of the present application provides a sheath stepless adjusting mechanism 10, wherein the sheath stepless adjusting mechanism 10 comprises a handle assembly 11, an unlocking limiting body 12, an elastic member 13, an axial adjusting sleeve 14 and a sheath adjusting assembly. The unlocking limiting body 12 is rotatably arranged on the handle body assembly 11 and provided with a locking position and an unlocking position, and the unlocking limiting body 12 can rotate to the locking position and the unlocking position. The elastic member 13 is disposed inside the unlocking limiting body 12. The axial adjusting sleeve 14 is arranged between the handle body assembly 11 and the unlocking limiting body 12, and is connected with the handle body assembly 11 through the elastic piece 13 and can move along the axial direction. Specifically, the axial adjustment sleeve 14 is movably disposed on the shank assembly 11 in the axial direction. The axial adjusting sleeve 14 penetrates through the unlocking limiting body 12. One end of the sheath adjusting assembly is connected with the axial adjusting sleeve 14, and the other end of the sheath adjusting assembly is connected with the sheath assembly 20. When the unlocking limiting body 12 rotates to the locking position, the unlocking limiting body 12 limits the axial adjusting sleeve 14 to move along the axial direction, and when the unlocking limiting body 12 rotates to the unlocking position, the axial adjusting sleeve 14 can move along the axial direction under the drive of the sheath adjusting assembly and enables the elastic piece 13 to deform in a self-adaptive manner, so that the position of the sheath adjusting assembly along the axial direction can be adjusted steplessly.
Specifically, the sheath adjustment assembly includes a manual adjustment housing 15 and a moving sleeve 16. The manual adjusting shell 15 is rotatably sleeved outside the axial adjusting sleeve 14, and the manual adjusting shell 15 and the axial adjusting sleeve 14 are relatively fixed in position along the axial direction. A moving sleeve 16 is provided inside the manual adjustment housing 15, the moving sleeve 16 being adapted to be connected to the sheath assembly 20. The manual adjusting shell 15 is connected with the movable sleeve 16, the movable sleeve 16 can be driven to adjust the position along the axial direction when the manual adjusting shell 15 rotates, and the movable sleeve 16 is relatively fixed with the manual adjusting shell 15 along the axial direction when the manual adjusting shell 15 does not rotate.
The manual adjustment housing 15 is fixed in position relative to the axial adjustment sleeve 14 in the axial direction, i.e. the manual adjustment housing 15 cannot move relative to the axial adjustment sleeve 14 in the axial direction. Likewise, when the manual adjustment housing 15 is not rotated, the moving sleeve 16 is fixed in position relative to the manual adjustment housing 15 in the axial direction, that is, the moving sleeve 16 cannot move relative to the manual adjustment housing 15 in the axial direction.
In use, when the unlocking limiting body 12 rotates to the locking position, the unlocking limiting body 12 limits the axial adjusting sleeve 14 to move along the axial direction, and at the moment, the position of the sheath assembly 20 along the axial direction can be adjusted by adopting a manual adjusting mode. Specifically, the manual adjustment housing 15 is rotated, and when the manual adjustment housing 15 rotates, the moving sleeve 16 is driven to adjust the position along the axial direction, and the moving sleeve 16 can correspondingly drive the sheath assembly 20 to adjust the position along the axial direction.
In addition, when the unlocking limiting body 12 rotates to the unlocking position, the axial adjusting sleeve 14 can move along the axial direction and enable the elastic piece 13 to deform in a self-adaptive manner, at the moment, the position of the sheath assembly 20 along the axial direction can be adjusted by adopting a manual adjusting mode, and stepless adjustment of the sheath assembly 20 along the axial direction can be realized. Specifically, when the sheath assembly 20 is stressed in the axial direction, the sheath assembly 20 drives the moving sleeve 16 to move in the axial direction, and the moving sleeve 16 is relatively fixed to the position of the manual adjustment shell 15 in the axial direction when the manual adjustment shell 15 is not rotated, so that the manual adjustment shell 15 can be driven to move in the axial direction, the manual adjustment shell 15 correspondingly drives the axial adjustment sleeve 14 to move in the axial direction, and the elastic member 13 is enabled to adaptively deform, namely, the sheath assembly 20 is adaptively and axially and freely moved in a telescopic manner under the action of the elastic force of the elastic member 13, so that the stepless automatic position adjustment is realized.
Therefore, the sheath assembly 20 can be adjusted in two modes, the sheath 21 can be manually adjusted, and stepless automatic adjustment of the sheath 21 can be realized, so that grinding operation can be more efficiently and safely performed, and the product performance is improved.
Of course, as some alternative solutions, the sheath adjusting assembly is not limited to the above-mentioned structure including the manual adjusting housing 15 and the moving sleeve 16, and may be flexibly adjusted and set to other manual adjusting structures according to actual requirements, so long as the position of the sheath assembly 20 along the axial direction can be adjusted by a manual adjusting manner. For example, the moving sleeve 16 may be omitted and the sheath adjustment assembly directly coupled to the sheath assembly 20, which directly drives stepless adjustment of the sheath assembly 20 in the axial direction as the sheath adjustment assembly rotates.
Referring to fig. 5 and 6, in one embodiment, the unlocking limiting body 12 includes an unlocking limiting sleeve. The distal end of the unlocking stop is provided with a first movable recess 121 extending in the circumferential direction and a second movable recess 122 extending in parallel to the axial direction thereof. The first movable recess 121 communicates with the second movable recess 122 on a first side in the circumferential direction and is provided corresponding to the unlock position, and the first movable recess 121 is provided corresponding to the lock position on a second side in the circumferential direction. The proximal end of the axial adjustment sleeve 14 is provided with a stop 141, the stop 141 being movable along the first movable recess 121 and along the second movable recess 122. In this way, when the unlocking limiting body 12 rotates to rotate to the second side of the first movable concave portion 121 along the circumferential direction, that is, when the unlocking limiting body 12 rotates to the locking position, the unlocking limiting body 12 and the axial adjusting sleeve 14 are relatively fixed in position along the axial direction, the position of the sheath assembly 20 along the axial direction can be adjusted only by manually adjusting the rotation of the shell 15, and under the condition that the manual adjusting shell 15 does not rotate, the sheath 21 adjusting assembly is stressed and cannot compress the elastic piece 13 to adjust the axial position, when the unlocking limiting body 12 rotates to rotate to the position where the first movable concave portion 121 and the second movable concave portion 122 are mutually communicated, that is, when the unlocking limiting body 12 rotates to the unlocking position, the elastic piece 13 is adaptively deformed, and when the sheath assembly 20 is stressed, the unlocking limiting body 12 and the axial adjusting sleeve 14 can axially move to adjust the position.
In some embodiments, the limiting member 141 includes, but is not limited to, a limiting pin, a limiting shaft, a limiting rod, or a limiting protrusion disposed on the proximal end of the axial adjustment sleeve 14, which can be flexibly adjusted and set according to practical needs.
Specifically, the proximal wall thickness of the axial adjustment sleeve 14 is advantageously greater than the wall thickness of other portions of the axial adjustment sleeve 14, thereby improving the mounting stability of the limiter 141.
In one embodiment, the inlet of the second movable recess 122 includes an arcuate transition wall 123 on a side proximate to the first movable recess 121. In this way, the arc-shaped transition wall 123 plays a guiding role in the moving process of the limiting piece 141 between the first movable concave part 121 and the second movable concave part 122, so that the moving adjustment of the limiting piece 141 is smoother, and the defect of jamming noise is prevented.
In one embodiment, the handle body assembly 11 is formed with a first annular groove 111 disposed along a circumferential direction thereof, the inner wall of the unlocking limiting sleeve is provided with a first flange 124, the first flange 124 is movably disposed in the first annular groove 111, and/or the inner wall of the unlocking limiting sleeve is provided with a second annular groove disposed along a circumferential direction thereof, the handle body assembly 11 is provided with a second flange, and the second flange is movably disposed in the second annular groove. Thus, the unlocking limiting sleeve can only rotate relative to the handle body assembly 11 along the circumferential direction, so that the unlocking limiting sleeve can rotate to a locking position or an unlocking position, and the unlocking limiting sleeve cannot move on the handle body assembly 11 along the axial direction to adjust the position.
In one embodiment, the handle assembly 11 includes a handle body 112, a first support sleeve 113, and a second support sleeve 114. The first support sleeve 113 is fixedly sleeved inside the handle body 112, and the distal end of the first support sleeve 113 extends out of the handle body 112. Optionally, the outer wall of the first support sleeve 113 is provided with a step, the handle body main body 112 is sleeved on the step, the step of the first support sleeve 113 and the distal end face of the handle body main body 112 are matched to form a first annular groove 111, so that the processing can be facilitated, and of course, the first annular groove 111 can also be directly formed on the outer wall of the first support sleeve 113.
In addition, the unlocking limiting sleeve is rotatably sleeved on the distal end of the first supporting sleeve 113. The second support sleeve 114 is fixedly sleeved inside the first support sleeve 113, the distal end of the second support sleeve 114 extends out of the first support sleeve 113, and the axial adjustment sleeve 14 is movably arranged on the second support sleeve 114 along the axial direction. The elastic member 13 is, for example, a spring, and the spring is sleeved outside the second supporting sleeve 114, and opposite ends of the elastic member 13 are respectively abutted against the proximal end of the axial adjusting sleeve 14 and the first supporting sleeve 113. Thus, the handle assembly 11 includes the handle body 112, the first support sleeve 113 and the second support sleeve 114, which can be easily manufactured and assembled together.
On the basis of the previous embodiment, the shank assembly 11 further comprises a third support sleeve 115 connected between the first support sleeve 113 and the second support sleeve 114. The third support sleeve 115 is sleeved inside the first support sleeve 113 and sleeved outside the second support sleeve 114. The proximal end of the third support sleeve 115 extends outside the first support sleeve 113, and the third support sleeve 115 is internally provided with a bearing 116, and the inner cutter assembly 40 is rotatably inserted into the bearing 116.
Specifically, in order to facilitate assembling the first support sleeve 113, the second support sleeve 114 and the third support sleeve 115 together, a first boss 1151 is disposed on the outer wall of the distal end of the third support sleeve 115, a second boss 1131 is disposed on the inner wall of the first support sleeve 113, and the first boss 1151 and the second boss 1131 are aligned and matched in the axial direction. In addition, a third boss 1152 is provided on the inner wall of the third support sleeve 115, and the proximal end of the second support sleeve 114 is in positioning engagement with the third boss 1152 in the axial direction.
Optionally, the proximal end of the resilient member 13 abuts the second boss 1131.
In some embodiments, a fourth boss 1141 is provided on the distal outer wall of the second support sleeve 114. The fourth boss 1141 serves to locate the axial adjustment sleeve 14 in the axial direction. Optionally, a fifth boss 143 is provided on the proximal inner wall of the axial adjustment sleeve 14. The fourth boss 1141 is in positioning engagement with the fifth boss 143 in the axial direction. Thus, the fourth boss 1141 serves as a stopper to prevent the axial adjustment sleeve 14 from being removed from the second support sleeve 114 in the axial direction.
In some embodiments, the handle assembly 11 further includes a first resilient ring 117 mounted on an outer wall of the first support sleeve 113. The first elastic ring 117 includes, but is not limited to, being made of a rubber material. The first elastic ring 117 abuts against the inner wall of the unlocking limiting body 12. When the unlocking limiting body 12 rotates, the first elastic ring 117 increases the rotation resistance of the unlocking limiting body 12 by friction with the unlocking limiting body 12, so that the rotation operation hand feeling is improved.
In order to realize that the axial adjustment sleeve 14 is movably sleeved on the handle body assembly 11 along the axial direction and prevent the axial adjustment sleeve 14 from rotating on the handle body assembly 11, the axial adjustment sleeve 14 is provided with a first guide part 144, and a second guide part 1142 which is in sliding fit with the first guide part 144 on the handle body assembly 11. Alternatively, the first guide portion 144 includes, but is not limited to, a guide ball, a guide block, a guide rod, a guide shaft, or the like, and the second guide portion 1142 is a guide groove provided on the handle assembly 11, and the second guide portion 1142 extends in a direction parallel to the axial direction.
Referring to fig. 3 and 5, in one embodiment, the first guiding portion 144 is disposed on the first fixing shaft on the inner wall of the axial adjustment sleeve 14, the second guiding portion 1142 is a guiding groove disposed on the outer wall of the second support sleeve 114, and the first fixing ball moves along the guiding groove. In this way, the axial adjustment sleeve 14 moves in the axial direction on the second support sleeve 114 without rotating to the left or right with respect to the second support sleeve 114, thereby preventing the shake from causing rotational displacement in the circumferential direction. In addition, the axial adjusting sleeve 14 is fixedly arranged relative to the handle body assembly 11 along the circumferential direction, so that the unlocking limiting body 12 can be accurately and rotationally adjusted to an unlocking state or a locking state in the operation process of a doctor.
In one embodiment, the sheath stepless adjustment mechanism 10 further comprises a housing 17. The outer cover 17 is arranged outside the unlocking limiting body 12, and the outer cover 17 is connected with the unlocking limiting body 12. The outer cover 17 is also rotatably housed outside the proximal end of the axial adjustment sleeve 14 and the proximal end of the manual adjustment housing 15. In this way, the outer cover 17 is rotated, the outer cover 17 can correspondingly drive the unlocking limiting body 12 to rotate and adjust to the locking position or the unlocking position, in addition, the outer cover 17 and the unlocking limiting body 12 are separately processed and then assembled together, processing can be facilitated, in addition, the outer cover 17 plays a role in decoration and protection, shielding the unlocking limiting body 12, the proximal end of the axial adjusting sleeve 14 and the proximal end of the manual adjusting shell 15, exposure is avoided, and the manual adjusting shell is attractive.
In one embodiment, the sheath stepless adjustment mechanism 10 further comprises an elastic sleeve 18 that is sleeved on the outside of the handle body assembly 11.
Alternatively, the elastic sleeve 18 includes, but is not limited to, a silicone sleeve. Thus, the elastic sleeve 18 is soft and elastic during the surgical procedure, which improves the comfort of the grip.
Specifically, the elastic sleeve 18 is fitted over the handle body 112. Alternatively, a third annular groove 118 is formed on the outer wall of the shank body 112, the third annular groove 118 being disposed around the circumferential direction of the shank body 112. The elastic sleeve 18 is mounted inside the third annular groove 118. In this way, the elastic sleeve 18 can be firmly installed on the outside of the handle body 112.
Alternatively, the outer wall of the elastomeric sleeve 18, the outer wall of the handle body 112, and the outer wall of the outer cover 17 are disposed flush or substantially flush.
Wherein, the outer cover 17 is provided with a first alignment mark, and the outer wall of the handle body 112 is provided with a second alignment mark corresponding to the first alignment mark. Therefore, the first alignment mark and the second alignment mark play a role in marking, and the rotation of the outer cover 17 to the unlocking position or the locking position can be judged, so that the doctor can conveniently perform rotation adjustment.
Specifically, the first alignment marks are, for example, two and are sequentially arranged at intervals in the circumferential direction, and the second alignment mark is one. The outer cover 17 is rotated to enable the two first alignment marks to be aligned with the second alignment marks respectively, and rotation to the unlocking position and the locking position can be achieved respectively.
Or the first alignment marks are for example one, and the second alignment marks are two and are sequentially arranged at intervals along the circumferential direction. The rotation of the outer cover 17 enables the first alignment mark to be aligned with the two second alignment marks in sequence, and rotation to the unlocking position and the locking position can be achieved respectively.
It should be noted that, the rotation angles corresponding to the rotation of the outer cover 17 and the unlocking limiting body 12 from the unlocking position to the locking position include, but are not limited to, 30 °, 45 °, 60 °, 90 °,120 °, 135 °, 150 ° or 180 °, etc., and specifically may be flexibly adjusted and set according to actual requirements, which is not limited herein.
Referring to fig. 3 and 5, in one embodiment, a third guiding portion 151 is formed on an inner wall of the manual adjustment housing 15, and a fourth guiding portion 161 is formed on an outer wall of the moving sleeve 16. The axial adjustment sleeve 14 has a sliding groove 145 formed in a side wall thereof and extending in parallel with the axial direction, and a fourth guide portion 161 slidably penetrating the sliding groove 145, the fourth guide portion 161 further cooperating with the third guide portion 151. Thus, when the manual adjustment housing 15 rotates, the fourth guiding portion 161 slidably penetrates the sliding groove 145, so that the third guiding portion 151 drives the fourth guiding portion 161 to move in the axial direction, and the fourth guiding portion 161 correspondingly drives the moving sleeve 16 to move in the axial direction.
In some embodiments, third guide 151 includes, but is not limited to, a helical groove. The fourth guide portion 161 is, for example, a guide ball, a guide block, a guide rod, a guide shaft, or the like. In this embodiment, the fourth guiding portion 161 is specifically configured as a guiding ball, and the guiding ball is a steel ball. The outer wall of the movable sleeve 16 is provided with a mounting groove 162, the guide ball is movably arranged in the mounting groove 162, and the guide ball also extends out of the mounting groove 162.
In some embodiments, the sheath stepless adjustment mechanism 10 further comprises a second elastic ring 191 mounted on the outer wall of the axial adjustment sleeve 14. The second elastic ring 191 includes, but is not limited to, being made of a rubber material. The second elastic ring 191 abuts against the inner wall of the manual adjustment housing 15. When the manual adjustment housing 15 rotates, the second elastic ring 191 increases the rotation resistance of the manual adjustment housing 15 by friction with the inner wall of the manual adjustment housing 15, thereby improving the rotation operation feeling.
In one embodiment, the sheath stepless adjustment mechanism 10 further comprises a limit housing 192. The limiting shell 192 is detachably arranged at the far end of the axial adjusting sleeve, the limiting shell 192 and the far end of the manual adjusting shell 15 are mutually abutted and matched along the axial direction, the outer wall of the axial adjusting sleeve is provided with the protruding part 142, and the protruding part 142 and the near end of the manual adjusting shell 15 are mutually abutted and matched along the axial direction. In this way, on one hand, the limiting shell 192 and the protruding portion 142 are respectively in abutting engagement with opposite ends of the manual adjustment shell 15, so that the manual adjustment shell 15 can be prevented from moving in the axial direction, and the manual adjustment shell 15 can only rotate around the axial adjustment sleeve, and on the other hand, the limiting shell 192 is detachably connected with the axial adjustment sleeve, so that part processing and assembly can be facilitated.
Optionally, the connection of the limit housing 192 to the axial adjustment sleeve includes, but is not limited to, a threaded engagement or a snap fit connection, etc., as not limited herein.
Referring to fig. 1 to 4, another embodiment of the present application provides a medical grinding apparatus, which includes the sheath stepless adjusting mechanism 10 of any one of the above embodiments, and further includes a sheath assembly 20, an outer cutter assembly 30, an inner cutter assembly 40 and a connecting shaft 50. The sheath assembly 20 is sleeved outside the outer cutter assembly 30. The proximal end of sheath assembly 20 is connected to a sheath adjustment assembly, and in particular, the proximal end of sheath assembly 20 is fixedly connected to movement sheath 16. The outer cutter assembly 30 is fixedly connected with the handle body assembly 11, the inner cutter assembly 40 is rotatably arranged in the outer cutter assembly 30 in a penetrating mode, the inner cutter assembly 40 is connected with the connecting shaft 50, and the connecting shaft 50 is used for being connected with a power rotating shaft of a motor.
When the unlocking limiting body 12 rotates to the unlocking position, the unlocking limiting body 12 limits the axial adjusting sleeve 14 to move along the axial direction, the sheath adjusting assembly can be operated to adjust the position of the sheath assembly 20 along the axial direction in a manual adjusting mode, when the unlocking limiting body 12 rotates to the unlocking position, the axial adjusting sleeve 14 can move along the axial direction and enable the elastic piece 13 to be adaptively deformed, the stepless adjustment of the sheath assembly 20 along the axial direction can be realized by adjusting the position of the sheath assembly 20 along the axial direction in a manual adjusting mode, specifically, when the sheath assembly 20 is stressed along the axial direction, the sheath assembly 20 drives the sheath adjusting assembly to move along the axial direction, and the sheath adjusting assembly correspondingly drives the axial adjusting sleeve 14 to move along the axial direction and enables the elastic piece 13 to adaptively deform, namely, the sheath assembly 20 adaptively and axially freely stretch under the action of the elastic force of the elastic piece 13, and the stepless automatic adjusting position is realized. Therefore, the sheath assembly 20 can be adjusted in two modes, the sheath 21 can be manually adjusted, and stepless automatic adjustment of the sheath 21 can be realized, so that grinding operation can be more efficiently and safely performed, and the product performance is improved.
Referring to fig. 1 and 2, the sheath assembly 20 includes a sheath 21 and a connection tube 22. The sheath 21 is connected with the connecting tube 22, the connecting tube 22 is sleeved outside the outer knife assembly 30, and the proximal end of the connecting tube 22 is fixedly connected with the movable sleeve 16.
Referring to fig. 2 and 3, the outer cutter assembly 30 may alternatively comprise an outer cutter tube. The outer cutter tube is arranged in the connecting tube 22 in a penetrating way and in the second supporting sleeve 114 in a penetrating way, and is fixedly connected with the inner wall of the second supporting sleeve 114.
Referring to fig. 1 to 3, the inner cutter assembly 40 optionally includes a grinding head 41 and an inner cutter bar 42. The grinding head 41 is connected to an inner cutter bar 42, and the inner cutter bar 42 is connected to a connecting shaft 50.
In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, they may be fixedly connected, detachably connected or integrally formed, mechanically connected, electrically connected, directly connected or indirectly connected through an intermediate medium, and communicated between two elements or the interaction relationship between two elements unless clearly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A sheath stepless adjustment mechanism, connected with a sheath assembly, characterized in that the mechanism comprises:
a handle assembly;
The unlocking limiting body is rotatably arranged on the handle body assembly and provided with a locking position and an unlocking position, and the unlocking limiting body can rotate between the locking position and the unlocking position;
The axial adjusting sleeve is arranged on the handle body assembly and can move along the axial direction, and the axial adjusting sleeve is matched with the unlocking limiting body;
the elastic piece is connected with the axial adjusting sleeve;
One end of the sheath adjusting assembly is connected with the axial adjusting sleeve, and the other end of the sheath adjusting assembly is connected with the sheath assembly; when the unlocking limiting body rotates to the unlocking position, the sheath adjusting assembly drives the axial adjusting sleeve to move along the axial direction and enables the elastic piece to deform in a self-adaptive mode so as to adjust the axial position of the sheath assembly steplessly;
The sheath adjusting assembly comprises a manual adjusting shell and a moving sleeve, wherein the manual adjusting shell is rotatably sleeved outside the axial adjusting sleeve, the manual adjusting shell is relatively fixed with the axial adjusting sleeve in position along the axial direction, the moving sleeve is arranged inside the manual adjusting shell and is used for being connected with the sheath assembly, the manual adjusting shell is connected with the moving sleeve, the moving sleeve can be driven to adjust the position along the axial direction when the manual adjusting shell rotates, and the moving sleeve is relatively fixed with the manual adjusting shell in position along the axial direction when the manual adjusting shell does not rotate.
2. The sheath stepless adjustment mechanism according to claim 1, wherein the unlocking limiting body comprises an unlocking limiting sleeve, a first movable concave portion extending in the circumferential direction and a second movable concave portion extending in parallel to the axial direction of the unlocking limiting sleeve are arranged at the distal end of the unlocking limiting sleeve, a first side of the first movable concave portion in the circumferential direction is communicated with the second movable concave portion and corresponds to the unlocking position, a second side of the first movable concave portion in the circumferential direction corresponds to the locking position, and a limiting piece is arranged at the proximal end of the axial adjustment sleeve and can move along the first movable concave portion and the second movable concave portion.
3. The sheath stepless adjustment mechanism according to claim 2, wherein the handle assembly is provided with a first annular groove arranged along the circumferential direction of the handle assembly, the inner wall of the unlocking limiting sleeve is provided with a first flange, the first flange is movably arranged in the first annular groove, and/or the inner wall of the unlocking limiting sleeve is provided with a second annular groove arranged along the circumferential direction of the unlocking limiting sleeve, and the handle assembly is provided with a second flange, and the second flange is movably arranged in the second annular groove.
4. The sheath stepless adjusting mechanism according to claim 3, wherein the handle body assembly comprises a handle body main body, a first supporting sleeve and a second supporting sleeve, the first supporting sleeve is fixedly sleeved in the handle body main body, the distal end of the first supporting sleeve extends out of the handle body main body, the unlocking limiting sleeve is rotatably sleeved on the distal end of the first supporting sleeve, the second supporting sleeve is fixedly sleeved in the first supporting sleeve, the distal end of the second supporting sleeve extends out of the first supporting sleeve, the axial adjusting sleeve is movably arranged on the second supporting sleeve in the axial direction, the elastic piece is a spring, the spring is sleeved on the outer portion of the second supporting sleeve, and two opposite ends of the elastic piece are respectively abutted with the proximal end of the axial adjusting sleeve and the first supporting sleeve.
5. The stepless sheath regulating mechanism according to claim 1, further comprising an outer cover, wherein the outer cover is arranged outside the unlocking limiting body and is connected with the unlocking limiting body, and the outer cover is rotatably arranged outside the proximal end of the axial regulating sleeve and the proximal end of the sheath regulating assembly.
6. The sheath stepless adjustment mechanism of claim 5, further comprising an elastic sleeve sleeved on the exterior of the handle assembly;
the outer cover is provided with a first alignment mark, and the outer wall of the handle body assembly is provided with a second alignment mark corresponding to the first alignment mark.
7. The sheath stepless adjustment mechanism of claim 1, wherein the proximal end of the axial adjustment sleeve extends outside of the manual adjustment housing and into the interior of the unlocking limiting.
8. The sheath stepless adjustment mechanism according to claim 7, wherein a third guide portion is formed on the inner wall of the manual adjustment housing, the outer wall of the movable sleeve is provided with a fourth guide portion, a sliding groove extending in parallel to the axial direction is formed on the side wall of the axial adjustment sleeve, the fourth guide portion slidably penetrates through the sliding groove, and the fourth guide portion is further matched with the third guide portion.
9. The sheath stepless adjustment mechanism according to claim 1, further comprising a limiting shell detachably mounted at the distal end of the axial adjustment sleeve, wherein the limiting shell and the distal end of the sheath adjustment assembly are in mutually abutting fit along the axial direction, a protruding portion is arranged on the outer wall of the axial adjustment sleeve, and the protruding portion and the proximal end of the sheath adjustment assembly are in mutually abutting fit along the axial direction.
10. The medical grinding device is characterized by comprising the sheath stepless adjusting mechanism according to any one of claims 1 to 9, a sheath assembly, an outer cutter assembly, an inner cutter assembly and a connecting shaft, wherein the sheath assembly is sleeved outside the outer cutter assembly, the proximal end of the sheath assembly is connected with the sheath adjusting assembly, the outer cutter assembly is fixedly connected with the handle body assembly, the inner cutter assembly is rotatably arranged inside the outer cutter assembly in a penetrating mode, the inner cutter assembly is connected with the connecting shaft, and the connecting shaft is used for being connected with a power rotating shaft of a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411994834.9A CN119770119B (en) | 2024-12-31 | 2024-12-31 | Sheath stepless adjustment mechanism and medical grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411994834.9A CN119770119B (en) | 2024-12-31 | 2024-12-31 | Sheath stepless adjustment mechanism and medical grinding device |
Publications (2)
| Publication Number | Publication Date |
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| CN119770119A CN119770119A (en) | 2025-04-08 |
| CN119770119B true CN119770119B (en) | 2025-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202411994834.9A Active CN119770119B (en) | 2024-12-31 | 2024-12-31 | Sheath stepless adjustment mechanism and medical grinding device |
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| CN (1) | CN119770119B (en) |
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|---|---|---|---|---|
| CN1984610A (en) * | 2004-03-30 | 2007-06-20 | 新特斯(美国)公司 | Adjustable depth drill bit |
| CN114533193A (en) * | 2022-03-22 | 2022-05-27 | 诺美新创医疗科技(成都)研究院(有限合伙) | Under-mirror spine grinding head with depth limiting function |
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| US5810828A (en) * | 1997-02-13 | 1998-09-22 | Mednext, Inc. | Adjustable depth drill guide |
| US8662801B2 (en) * | 2009-02-24 | 2014-03-04 | Black & Decker Inc. | Depth gauge for drill bit |
| US9572589B2 (en) * | 2012-07-10 | 2017-02-21 | Stryker European Holdings I, Llc | Drill guide |
| US20140276880A1 (en) * | 2013-03-15 | 2014-09-18 | Blackstone Medical, Inc. | Locking assembly for a surgical drill bit guide |
| CN204192697U (en) * | 2014-10-29 | 2015-03-11 | 重庆西山科技有限公司 | Band protects the abrasive drilling handle of sheath |
| CN205626019U (en) * | 2016-04-12 | 2016-10-12 | 重庆西山科技股份有限公司 | Diversion abrasive drilling handle and abrasive drilling subassembly |
| CN208822879U (en) * | 2018-05-31 | 2019-05-07 | 贵州梓锐科技有限公司 | A kind of surgical grinding drill which is easy to adjust the grinding depth |
| DE102022119980A1 (en) * | 2022-08-09 | 2024-02-15 | Aesculap Ag | Medical motor handpiece with locking and/or stop unit |
| CN220676063U (en) * | 2023-04-18 | 2024-03-29 | 张伟 | Telescopic sheath grinding head |
| CN219629723U (en) * | 2023-04-27 | 2023-09-05 | 重庆西山科技股份有限公司 | Sheath adjustment structure and medical grinding tool |
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2024
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1984610A (en) * | 2004-03-30 | 2007-06-20 | 新特斯(美国)公司 | Adjustable depth drill bit |
| CN114533193A (en) * | 2022-03-22 | 2022-05-27 | 诺美新创医疗科技(成都)研究院(有限合伙) | Under-mirror spine grinding head with depth limiting function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119770119A (en) | 2025-04-08 |
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