CN219089542U - Replaceable grinding end structure - Google Patents
Replaceable grinding end structure Download PDFInfo
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- CN219089542U CN219089542U CN202222130452.4U CN202222130452U CN219089542U CN 219089542 U CN219089542 U CN 219089542U CN 202222130452 U CN202222130452 U CN 202222130452U CN 219089542 U CN219089542 U CN 219089542U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model discloses a replaceable grinding end structure, and belongs to the technical field of vascular interventional operations. The grinding device comprises a hollow driving shaft, a hollow driving connecting shaft and a grinding end head, wherein the grinding end head is fixed outside the driving connecting shaft, and the driving shaft and the driving connecting shaft are connected and fixed through a hollow detachable joint. The grinding end is connected and fixed with the driving shaft by adopting the hollow detachable connector, so that the grinding end with different specifications can be rapidly selected for different calcified plaque lesions, the occlusive calcified plaque can be more effectively and pointedly cut off, the flexibility of clinical selection is improved, multiple sets of equipment are not required to be replaced, the clinical operation time is shortened, and the use cost of clinical products is reduced; the detachable joint is simple and reliable in connection mode, can be assembled and disassembled quickly, is easy to use and popularize, and in addition, the detachable joint adopts a structure with an inner connecting piece, so that the rotation of the circumferential direction of the driving shaft does not affect the connection of the axial direction of the detachable joint.
Description
Technical Field
The utility model relates to a replaceable grinding end structure, and belongs to the technical field of vascular interventional operations.
Background
Arteriosclerosis-type vascular diseases are mainly caused by plaque or substance accumulating inside blood vessels, which occludes or narrows blood vessel passages, thus restricting blood flow, resulting in a restriction of blood supply in the downstream region of the vascular system. Such abnormal hemodynamics can cause a series of adverse consequences such as hypoxia, abnormal intravascular pressure, increased cardiac load and heart failure. Plaque or material that causes stenosis or occlusion of a blood vessel gradually develops within the vessel wall and, in severe cases, may develop into complete occlusion of the blood vessel. For example, chronic Total Occlusion (CTO), which may also be a calcification of intima or media plaque with calcium salt deposition, may result in severe arteriosclerosis or stenosis, loss of vascular elasticity and vascular channel size. Stenosis or occlusion caused by plaque in the blood vessel or calcified plaque may occur in the coronary and peripheral arteries, and vascular stenosis caused by plaque in the peripheral blood vessel of the lower limb of the human body, such as long-term untreated, may cause pain, claudication, or even amputation in the patient due to a long-term lack of blood flow. In coronary vascular disease, if the patient is untreated, blood flow through the coronary arteries to the heart muscle will become abnormal, causing myocardial infarction and possibly leading to stroke and death.
With the recent development of medical technology, vascular access minimally invasive procedures, known as atherectomy, have been used to treat such vascular stenosis or occlusion, restoring or reestablishing intravascular blood flow. A variety of devices and procedures have been used to date that are capable of cutting plaque or calcified plaque tissue from within a blood vessel, and modifying plaque within a lumen of the blood vessel to ensure adequate vascular passageway size. Angioplasty is then performed using the balloon catheter to dilate the vascular passageway. Finally, a vascular stent is implanted to maintain the lumen size of the vessel and restore the blood circulation function. Among them, atherectomy may be performed by rotational cutting, orbital rotational atherectomy, laser ablation, and directional atherectomy.
In atherectomy procedures, a typical atherectomy device includes a drive shaft positioned within a catheter, with a grinding tip provided at a distal end, the grinding tip having a layer of diamond particles on a surface thereof that abrade plaque. The abrading head effects abrading by rotation of a drive shaft coupled into the handle drive assembly while traveling within the vessel through the occlusion to form an open passageway. The larger the area of plaque removed, the larger the passage created through the vessel and the better the resulting blood flow. The plaque or material removed may be so fine as to be digested and absorbed by the vascular reticuloendothelial system.
Generally, it is required in clinic to use grinding tips of different sizes and specifications according to the occlusion degree of calcified lesions to open occluded blood vessels, and the size of the vascular opening channel formed by the grinding tip by spin grinding is related to the size specification and form of the grinding tip. However examples of plaque removal devices in the prior art include:
CN201980065928.9 is used for devices and methods for producing an orbital motion in a drive shaft of a rotating medical device; CN201710187996.5 plaque removal device (center); CN201780019226.8 has a rotary cutting device of an eccentric abrading head system; CN200880019500.2 is used for eccentric abrading heads of high-speed rotational atherectomy devices; CN201980065928.9 is used for devices and methods for producing an orbital motion in a drive shaft of a rotating medical device; CN201380045305.8 plaque excision and thrombectomy combined catheter.
The grinding tips of the above-mentioned patent technology are integral with the drive shaft and are not removable, which limits the clinical choice of product specifications, and the choice of different specifications requires replacement of the entire handle and catheter device product, increasing the cost of selecting different specifications of grinding tips.
Therefore, the design of the replaceable grinding end structure can rapidly select grinding ends with different specifications for different calcified plaque lesions, effectively remove occlusive calcified plaque materials, increase the flexibility of clinical selection, shorten the time of clinical operation and reduce the use cost of clinical products.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: a replaceable grinding tip structure is provided, which solves the problem that the grinding tip is not replaceable in the current device for rotary cutting calcified plaque.
The technical problems to be solved by the utility model are realized by adopting the following technical scheme:
the utility model provides a removable grinding end structure, it includes hollow drive shaft, hollow drive connecting axle and grinding end, and the grinding end is fixed in the drive connecting axle outside, connect fixedly through hollow detachable joint between drive shaft, the drive connecting axle.
In a first preferred scheme, the detachable joint is composed of a hollow male joint and a hollow female joint, the male joint is fixed with the distal end of the driving shaft, the female joint is fixed with the proximal end of the driving connecting shaft, the male joint is provided with external threads, the female joint is provided with internal threads, and the male joint is screwed and fixed with the female joint.
In this scheme, the drive shaft has the motor drive rotation in the actuating lever, and the drive shaft is rotatory according to male joint and female joint direction of screwing, prohibits the counter-rotation. Thus, the male connector and the female connector cannot be loosened when the driving shaft rotates. At this time, the driving shaft drives the driving connecting shaft and the grinding end to rotate, and the calcified plaque is rotary-cut. All matched grinding ends adopt the same male connector and female connector so as to quickly replace grinding ends with different specifications.
The second preferred scheme, can dismantle the joint and constitute by hollow male joint, hollow female joint and establish at the inside hollow internal connection spare of female joint, male joint and drive shaft distal end are fixed, and male joint sets up the external screw thread, and female joint proximal end sets up the internal screw thread, sets up the through-hole that is less than female joint internal diameter on the female joint distal end terminal surface, and internal connection spare diameter is greater than the through-hole diameter, and drive connecting axle proximal end passes the through-hole and is fixed with internal connection spare distal end, and male joint screw in female joint compresses tightly the internal connection spare and fixes.
The male connector is characterized in that an external thread is arranged on the outer circumference of the proximal end of the male connector, a connecting plug with a non-circular cross section is arranged at the distal end of the male connector, an inner jack matched with the connecting plug in shape is arranged inside the proximal end of the inner connecting piece, the connecting plug is inserted into the inner jack of the inner connecting piece, the female connector is screwed with the male connector, and the inner connecting piece is pressed inside the female connector by the male connector.
The section of the connecting plug is any one of a polygon, an ellipse and a star.
The driving shaft rotates according to the screwing direction of the male joint and the female joint, and the reverse rotation is forbidden. The male connector is provided with a non-circular connecting plug at the distal end, an inner jack matched with the connecting plug in shape is arranged in the proximal end of the inner connecting piece, and the male connector is screwed into the female connector to tightly press and fix the inner connecting piece. The connecting plug transmits power in the axial rotation circumferential direction, and the male connector and the female connector are fixedly connected in the axial direction, so that the axial connection cannot be directly tightened or loosened due to rotation in the rotation circumferential direction. Namely, the circumferential rotation and axial connection functions are separated and are not mutually influenced, so that reliable power transmission and quick disassembly and replacement are ensured. At this time, the driving shaft drives the driving connecting shaft and the grinding end to rotate, and rotary cutting is performed.
The detachable connector is composed of a hollow male connector, a hollow female connector and a hollow inner connecting piece arranged in the female connector, wherein the male connector is fixed with the far end of a driving shaft, an elastic buckle is arranged on the outer circumference of the near end of the male connector, a connecting plug with a noncircular section is arranged at the far end of the male connector, a circle of annular clamping grooves matched with the elastic buckle are arranged on the near end of an inner cavity of the female connector, a through hole smaller than the inner diameter of the female connector is formed in the corresponding position of the annular clamping grooves and the elastic buckle, the diameter of the inner connecting piece is larger than that of the through hole, the near end of a driving connecting shaft penetrates through the through hole and is fixed with the far end of the inner connecting piece, an inner jack matched with the shape of the connecting plug is formed in the near end of the inner connecting piece, the connecting plug is inserted into the inner jack of the inner connecting piece, the female connector is tightly clamped with the male connector through the elastic buckle in the annular clamping grooves, and the inner connecting piece is pressed inside the female connector.
The male connector and the female connector are connected through the elastic buckle structure, the problem of forward and reverse rotation of the driving shaft is not needed to be considered, the rotary cutting purpose can be achieved in two rotation directions, and the problem of loosening is not needed to be worried about. The elastic buckle can be assembled quickly in a plugging manner; through the side opening that uses the thimble to insert annular draw-in groove, with elasticity buckle compression back, withdraw from annular draw-in groove, dismantlement that can be convenient.
The detachable connector is composed of a hollow male connector and a hollow female connector, the male connector is fixed with the far end of a driving shaft, an elastic buckle is arranged on the outer circumference of the near end of the male connector, a connecting plug with a non-circular section is arranged at the far end of the male connector, a circle of annular clamping grooves matched with the elastic buckle are arranged on the near end of an inner cavity of the female connector, a through side hole is formed in the position, corresponding to the elastic buckle, of the annular clamping grooves, an inner insertion hole matched with the connecting plug is formed in the far end of the inner cavity of the female connector, the far end of the female connector is fixed with the near end of the driving connecting shaft, the connecting plug is inserted into the inner insertion hole, and the female connector is clamped through the elastic buckle matching of the annular clamping grooves and the male connector.
On the basis of scheme III, set up non-circular connecting plug at the public joint distal end, connecting plug transmits power at axis rotatory circumferencial direction, and public joint and female joint can not receive power transmission's influence through elastic buckle connection's structure in the axis direction to elastic buckle connection structure's stability has been guaranteed.
In the above scheme:
the grinding end adopts a coaxial grinding end with a centroid falling on the central axis of the driving shaft or an eccentric grinding end with a centroid falling outside the central axis of the driving shaft.
And the outer surface of the grinding end is wholly or partially provided with a silicon carbide particle layer.
And the outer surface of the female joint is wholly or partially provided with a silicon carbide particle layer.
The grinding end head comprises a centroid which is radially offset from the longitudinal axis of the driving shaft and a non-offset centroid, the vibration amplitude of the eccentric grinding end head is larger than that of the non-eccentric coaxial grinding end head, the grinding end head has better rotary cutting effect, is suitable for preliminary rotary cutting, and is suitable for later-stage slow and fine rotary cutting.
The beneficial effects of the utility model are as follows:
(1) The grinding end is connected and fixed with the driving shaft by adopting the hollow detachable connector, so that the grinding end with different specifications can be rapidly selected for different calcified plaque lesions, the occlusive calcified plaque can be more effectively and pointedly cut off, the flexibility of clinical selection is improved, multiple sets of equipment are not required to be replaced, the clinical operation time is shortened, and the use cost of clinical products is reduced;
(2) The detachable joint is simple and reliable in connection mode, can be assembled and disassembled quickly, is easy to use and popularize, and in addition, the detachable joint adopts a structure with an inner connecting piece, so that the rotation of the driving shaft in the circumferential direction does not influence the connection of the detachable joint in the axial direction, the connection structure is more stable, the structure of elastic buckle connection is not influenced by power transmission, and can also rotate bidirectionally, and quick plug connection is realized;
(3) The detachable joint is adopted for connection, and after the grinding end is worn, only the grinding end can be detached and replaced without replacing the whole driving shaft and the driving handle, so that the use cost of the product is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the drive connection shaft and grinding bit;
FIG. 3 is a schematic view of a grinding bit utilizing a coaxial grinding bit;
FIG. 4 is a schematic view of a grinding head employing an eccentric grinding head;
FIG. 5 is a schematic view of a distal end of a male connector with a connecting plug;
FIG. 6 is a schematic cross-sectional view of a male connector and a female connector;
FIG. 7 is a schematic view of the internal connection of the male and female connectors;
FIG. 8 is a schematic diagram of the connection structure of a male connector and a female connector;
FIG. 9 is a schematic view of a connection structure of a male connector using an elastic buckle;
FIG. 10 is a schematic view of an internal connection structure of a male connector using an elastic buckle;
FIG. 11 is a schematic view of an internal connection structure of a male connector with a female connector using an elastic buckle;
FIG. 12 is a schematic view of a female connector and an inner connector in a split configuration;
FIG. 13 is a schematic view of a disassembly structure of a male connector using an elastic buckle structure;
FIG. 14 is a schematic view of a female connector and an inner connector in a unitary construction;
fig. 15 is a schematic view of the structure of the present utility model applied to atherectomy.
In the figure: 1. a drive shaft; 2. driving the connecting shaft; 3. grinding the end head; 301. coaxially grinding the end head; 302. eccentric grinding of the end head; 4. a detachable joint; 401. a male connector; 402. a female joint; 403. an inner connecting piece; 404. a through hole; 405. an external thread; 406. a connection plug; 407. an inner jack; 408. an elastic buckle; 409. an annular clamping groove; 410. a side hole; 5. a thimble; 6. a conduit; 7. a blood vessel; 8. a guide wire.
Detailed Description
The utility model will be further described with reference to the following embodiments in order to make the technical means, the creation features, the achievement of the objects and the effects of the utility model easy to understand.
As used herein, the "distal end" is the end proximal to the patient and the "proximal end" is the end proximal to the operator.
Example 1
As shown in fig. 1-4, the replaceable grinding end structure comprises a hollow driving shaft 1, a hollow driving connecting shaft 2 and a grinding end 3, wherein the grinding end 3 is fixed outside the driving connecting shaft 2, and the driving shaft 1 and the driving connecting shaft 2 are fixedly connected through a hollow detachable joint 4.
The grinding tip 3 employs a coaxial grinding tip 301 whose center of mass falls on the center axis of the drive shaft 1 or an eccentric grinding tip 302 whose center of mass falls outside the center axis of the drive shaft 1.
The grinding bit 3 and the outer surface of the female connector 402 are provided with a layer of silicon carbide particles in whole or in part.
The detachable joint 4 is composed of a hollow male joint 401 and a hollow female joint 402, wherein the male joint 401 is fixed with the distal end of the driving shaft 1, the female joint 402 is fixed with the proximal end of the driving connecting shaft 2, the male joint 401 is provided with external threads, the female joint 402 is provided with internal threads, and the male joint 401 is screwed and fixed with the female joint 402.
The drive shaft 1 is driven to rotate by a motor in a drive handle, and the drive shaft 1 is rotated in a screwing direction of the male connector 401 and the female connector 402, and is prevented from rotating in the reverse direction. This does not cause the male connector 401 to come loose from the female connector 402 while the drive shaft 1 rotates. At this time, the drive shaft 1 drives the drive connection shaft 2 and the grinding tip 3 to rotate, and the calcified plaque is subjected to rotary cutting. All matched grinding heads 3 adopt the same male connector 401 and female connector 402 so as to quickly replace grinding heads 3 with different specifications.
The grinding tip 3 comprises two forms of a centroid which is radially offset from the longitudinal axis of the driving shaft 1 and a non-offset centroid, the vibration amplitude of the eccentric grinding tip 302 is larger than that of the non-eccentric coaxial grinding tip 301, the grinding tip has better rotary cutting effect, the grinding tip is suitable for being used in preliminary rotary cutting, and the non-eccentric coaxial grinding tip 301 is suitable for later-stage slow fine rotary cutting.
The grinding end 3 and the outer surface of the female joint 402 are fully or partially provided with a layer of silicon carbide particles. The layer of diamond grains is used to provide a rough grinding surface for grinding the calcified plaque into fine particles which are digested and absorbed by the vascular 7 reticuloendothelial system.
As shown in fig. 15, the method of use:
(1) The required grinding tip 3 is selected, and the drive connection shaft 2 is connected and fixed at the distal end of the drive shaft 1 through the detachable joint 4.
(2) The driving shaft 1, the detachable joint 4 and the driving connecting shaft 2 are all arranged in the catheter 6, the proximal end of the catheter 6 is connected with the driving handle, the driving shaft 1 is driven to rotate by a motor in the driving handle (which is the prior equipment and is not shown in the drawing), a guide wire 8 is inserted into the driving shaft 1, the detachable joint 4 and the driving connecting shaft 2, the guide wire 8 is stretched into the blood vessel 7 until reaching the calcified plaque, and then the catheter 6 is gradually conveyed to the calcified plaque rotary cutting part of the blood vessel 7 along the guide wire 8;
(3) Starting a motor of a driving handle, starting rotation of a driving shaft 1, starting rotary cutting of a driving connecting shaft 2 and a grinding end 3 connected with the driving shaft 1, and grinding calcified plaques into fine particles which can be digested and absorbed by a vascular 7 reticuloendothelial system;
(4) When the operation is carried out until another grinding end head 3 needs to be replaced, the motor of the driving handle is stopped, the catheter 6 and the internal rotary cutting structure are withdrawn from the body, the new grinding end head 3 is detached and replaced, the operation is carried out again according to the steps (2) and (3), until the plaque rotary cutting operation is completely finished, and all the instruments are withdrawn from the human body.
The grinding end 3 is connected and fixed with the driving shaft 1 by adopting the hollow detachable joint 4, so that the grinding end 3 with different specifications can be rapidly selected for different calcified plaque lesions, the occlusive calcified plaque can be more effectively and pointedly cut off, the flexibility of clinical selection is improved, multiple sets of equipment are not required to be replaced, the clinical operation time is shortened, and the use cost of clinical products is reduced.
Adopt and dismantle the joint 4 and connect, after grinding end 3 loss, can only dismantle and change grinding end 3, need not change whole drive shaft 1 and actuating handle, reduce product use cost by a wide margin.
Example 2
As shown in fig. 5 to 8, the detachable joint 4 is similar to the embodiment 1, and is composed of a hollow male joint 401, a hollow female joint 402 and a hollow inner connecting piece 403 arranged inside the female joint 402, wherein the male joint 401 is fixed to the distal end of the driving shaft 1, the male joint 401 is provided with external threads, the proximal end of the female joint 402 is provided with internal threads, a through hole 404 smaller than the inner diameter of the female joint 402 is arranged on the distal end face of the female joint 402, the diameter of the inner connecting piece 403 is larger than that of the through hole 404, the proximal end of the driving connecting shaft 2 is fixed to the distal end of the inner connecting piece 403 through the through hole 404, and the male joint 401 is screwed into the female joint 402 to compress and fix the inner connecting piece 403.
The male connector 401 is provided with external threads on the outer circumference of the proximal end, the distal end of the male connector 401 is provided with a connecting plug 406 with a non-circular cross section, an inner insertion hole 407 matched with the connecting plug 406 in shape is formed in the proximal end of the inner connector 403, the connecting plug 406 is inserted into the inner insertion hole 407 of the inner connector 403, the female connector 402 is screwed with the male connector 401, and the inner connector 403 is compressed in the female connector 402 by the male connector 401.
The cross section of the connection plug 406 is any one of polygonal, elliptical, and star-shaped.
The drive shaft 1 is rotated in the screwing direction of the male connector 401 and the female connector 402, and the reverse rotation is inhibited. The distal end of the male connector 401 is provided with a non-circular connecting plug 406, the inside of the proximal end of the inner connecting piece 403 is provided with an inner insertion hole 407 which is matched with the connecting plug 406 in shape, and the male connector 401 is screwed into the female connector 402 to tightly press and fix the inner connecting piece 403. The connection plug 406 transmits power in the axial rotation circumferential direction, and the male connector 401 and the female connector 402 are connected and fixed in the axial direction, so that rotation in the rotation circumferential direction does not directly cause the axial connection to become tighter or looser. Namely, the circumferential rotation and axial connection functions are separated and are not mutually influenced, so that reliable power transmission and quick disassembly and replacement are ensured. At this time, the drive shaft 1 drives the drive connection shaft 2 and the grinding tip 3 to rotate, and rotary cutting is performed.
Example 3
As shown in fig. 9-13, other structures are the same as those of embodiment 1, the detachable joint 4 is composed of a hollow male joint 401, a hollow female joint 402 and a hollow inner connecting piece 403 arranged inside the female joint 402, the male joint 401 is fixed with the distal end of the driving shaft 1, an elastic buckle 408 is arranged on the outer circumference of the proximal end of the male joint 401, a connecting plug 406 with a non-circular section is arranged on the distal end of the male joint 401, a circle of annular clamping grooves 409 matched with the elastic buckle 408 is arranged on the proximal end of the inner cavity of the female joint 402, a through hole 410 penetrating through the annular clamping grooves 409 and corresponding to the elastic buckle 408 is arranged on the distal end face of the female joint 402, a through hole 404 smaller than the inner diameter of the female joint 402 is arranged on the distal end face of the female joint 402, the diameter of the inner connecting piece 403 is larger than the diameter of the through hole 404, an inner inserting hole 407 matched with the connecting plug 406 is arranged inside the proximal end of the inner connecting piece 403, the connecting plug 406 is inserted into the inner inserting hole 407, the female joint 402 is matched with the elastic buckle 408 of the male joint 401 through the annular clamping grooves 409, and the inner connecting piece 403 is pressed inside the male joint 402.
The male connector 401 and the female connector 402 are connected through the elastic buckle 408 structure, the problem of forward and reverse rotation of the driving shaft 1 is not needed to be considered, the rotary cutting purpose can be achieved in both rotation directions, and the problem of loosening is not needed to be worried about. And the elastic buckle 408 can be assembled quickly by plugging; the ejector pin 5 is inserted into the side hole 410 of the annular clamping groove 409, so that the elastic buckle 408 is compressed and then retreated from the annular clamping groove 409, and the elastic buckle can be conveniently detached.
Example 4
As shown in fig. 14, other structures are the same as those of embodiment 1, the detachable joint 4 is composed of a hollow male joint 401 and a hollow female joint 402, the male joint 401 is fixed to the distal end of the driving shaft 1, an elastic buckle 408 is provided on the outer circumference of the proximal end of the male joint 401, a connecting plug 406 with a non-circular cross section is provided on the distal end of the male joint 401, a ring-shaped clamping groove 409 matched with the elastic buckle 408 is provided on the proximal end of the inner cavity of the female joint 402, a through side hole 410 is provided on the position of the ring-shaped clamping groove 409 corresponding to the elastic buckle 408, an inner insertion hole 407 matched with the connecting plug 406 is provided on the distal end of the inner cavity of the female joint 402, the distal end of the female joint 402 is fixed to the proximal end of the driving connecting shaft 2, the connecting plug 406 is inserted into the inner insertion hole 407, and the female joint 402 is clamped with the elastic buckle 408 of the male joint 401 through the ring-shaped clamping groove 409.
In embodiments 2-4, a non-circular connecting plug 406 is provided at the distal end of the male connector 401, the connecting plug 406 transmits power in the circumferential direction of rotation of the axis, and the axial connecting structure is not affected by the power transmission. In embodiments 3 and 4, the structure in which the male connector 401 and the female connector 402 are connected in the axial direction through the elastic buckle 408 is not only affected by power transmission, but also can rotate in both directions, and quick plug connection is achieved, so that the stability of the connection structure of the elastic buckle 408 is ensured. The detachable joint 4 is simple and reliable in connection mode, can be assembled and disassembled quickly, and is easy to use and popularize.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by persons skilled in the art that the present utility model is not limited to the embodiments described above, but is capable of numerous variations and modifications without departing from the spirit and scope of the utility model as hereinafter claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a removable grinding end structure, it includes hollow drive shaft, hollow drive connecting axle and grinding end, and the grinding end is fixed in the drive connecting axle outside, its characterized in that, connect fixedly through hollow detachable joint between drive shaft, the drive connecting axle.
2. The replaceable grinding bit structure of claim 1 wherein the removable connector comprises a hollow male connector and a hollow female connector, the male connector being secured to the distal end of the drive shaft, the female connector being secured to the proximal end of the drive shaft, the male connector having external threads, the female connector having internal threads, the male connector being secured to the female connector by tightening.
3. The replaceable grinding end head structure according to claim 1, wherein the detachable joint is composed of a hollow male joint, a hollow female joint and a hollow internal connecting piece arranged in the female joint, the male joint is fixed with the distal end of the driving shaft, the male joint is provided with external threads, the proximal end of the female joint is provided with internal threads, the distal end face of the female joint is provided with a through hole smaller than the inner diameter of the female joint, the diameter of the internal connecting piece is larger than that of the through hole, the proximal end of the driving connecting shaft penetrates through the through hole to be fixed with the distal end of the internal connecting piece, and the male joint is screwed into the female joint to compress and fix the internal connecting piece.
4. The replaceable grinding tip structure of claim 3, wherein the male connector is provided with an external thread on the outer circumference of the proximal end, the distal end of the male connector is provided with a connecting plug having a non-circular cross section, the proximal end of the inner connector is internally provided with an inner insertion hole matching with the shape of the connecting plug, the connecting plug is inserted into the inner insertion hole of the inner connector, the female connector is screwed with the male connector, and the inner connector is pressed inside the female connector by the male connector.
5. The replaceable grinding bit structure of claim 4 wherein the cross-section of the connector pin is any one of polygonal, oval, and star-shaped.
6. The replaceable grinding end head structure according to claim 1, wherein the detachable joint is composed of a hollow male joint, a hollow female joint and a hollow inner connecting piece arranged in the female joint, the male joint is fixed with the distal end of the driving shaft, an elastic buckle is arranged on the outer circumference of the proximal end of the male joint, a connecting plug with a non-circular section is arranged at the distal end of the male joint, a circle of annular clamping grooves matched with the elastic buckle are arranged at the proximal end of the inner cavity of the female joint, a side hole penetrating through the annular clamping grooves is arranged at the corresponding position of the annular clamping grooves and the elastic buckle, a through hole smaller than the inner diameter of the female joint is arranged on the distal end face of the female joint, the diameter of the inner connecting piece is larger than the diameter of the through hole, the proximal end of the driving connecting shaft penetrates through the through hole to be fixed with the distal end of the inner connecting piece, an inner insertion hole matched with the shape of the connecting plug is arranged in the inner portion of the proximal end of the inner connecting piece, the connecting plug is inserted into the inner insertion hole of the inner connecting piece, the female joint is clamped through the elastic clamping of the annular clamping groove and the inner connecting piece, and the male joint is compressed inside the female joint.
7. The replaceable grinding end structure according to claim 1, wherein the detachable joint is composed of a hollow male joint and a hollow female joint, the male joint is fixed with the distal end of the driving shaft, an elastic buckle is arranged on the outer circumference of the proximal end of the male joint, a connecting plug with a non-circular section is arranged on the distal end of the male joint, a circle of annular clamping groove matched with the elastic buckle is arranged on the proximal end of the inner cavity of the female joint, a through side hole is arranged at the position corresponding to the annular clamping groove and the elastic buckle, an inner insertion hole matched with the connecting plug is arranged on the distal end of the inner cavity of the female joint, the distal end of the female joint is fixed with the proximal end of the driving connecting shaft, the connecting plug is inserted into the inner insertion hole, and the female joint is clamped with the elastic buckle matched with the male joint through the annular clamping groove.
8. The replaceable grinding bit structure of any of claims 1-7 wherein the grinding bit employs a coaxial grinding bit having a center of mass falling on the center axis of the drive shaft or an eccentric grinding bit having a center of mass falling outside the center axis of the drive shaft.
9. The replaceable grinding bit structure of any of claims 1-7 wherein the grinding bit outer surface is provided in whole or in part with a layer of diamond grains.
10. The replaceable grinding bit structure of any of claims 2-7 wherein the outer surface of the box is provided with a layer of silicon carbide particles in whole or in part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222130452.4U CN219089542U (en) | 2022-08-12 | 2022-08-12 | Replaceable grinding end structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222130452.4U CN219089542U (en) | 2022-08-12 | 2022-08-12 | Replaceable grinding end structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219089542U true CN219089542U (en) | 2023-05-30 |
Family
ID=86456823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222130452.4U Active CN219089542U (en) | 2022-08-12 | 2022-08-12 | Replaceable grinding end structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219089542U (en) |
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2022
- 2022-08-12 CN CN202222130452.4U patent/CN219089542U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240605 Address after: 201413, 1st and 2nd floors of Building 1, No. 356 Zhengbo Road, Lingang New Area, China (Shanghai) Pilot Free Trade Zone, Fengxian District, Shanghai Patentee after: Shanghai Xiaoyu Medical Technology Co.,Ltd. Country or region after: China Address before: 201318 Room 301, building 17, Lane 3399, Kangxin Road, Pudong New Area, Shanghai Patentee before: Shanghai rongmai Medical Technology Co.,Ltd. Country or region before: China |