CN212574928U - Medullary focus removing device - Google Patents

Abstract

The utility model relates to a medullary focus clearing device, including sleeve pipe and scaler, the sleeve pipe is flexible hollow sleeve pipe, the scaler includes fusiform cutting head, flexible pipe and regulator, the regulator with fusiform cutting head sets up respectively the both ends of flexible pipe, the regulator includes base, swiveling wheel, acts as go-between and connector, the one end of acting as go-between be equipped with the briquetting that fusiform cutting head is connected, the other end of acting as go-between passes the flexible pipe inside with the swiveling wheel is connected, the one end of flexible pipe with base fixed connection, fusiform cutting head is pressed the briquetting the other end of flexible pipe, the connector with base fixed connection, the swiveling wheel with flexible pipe threaded connection. The utility model is used for the operation of cleaing away of bone marrow matter focus, can change the size at direction and cutting position in the bone cavity, be applicable to the excision of the optional position focus in the bone cavity.

Description

Medullary focus removing device

The technical field is as follows:

the utility model relates to the technical field of medical equipment, concretely relates to medullary focus clearing device.

Background art:

at present, various benign bone diseases such as osteonecrosis, bone fibrous dysplasia, bone cyst, aneurysm-like bone cyst, chronic osteomyelitis and the like which involve bone marrow (cancellous bone) all relate to surgical operations which need to clear focuses, and particularly once the focuses at the bone marrow are formed, local tissue ischemia and bone trabecular mechanical structures are easily caused, so that local chronic pain and limb dysfunction are caused, great pain is caused to patients, and the life quality of the patients is influenced. The disease is difficult to self-heal, and the focus is required to be thoroughly cleared by an operation when the disease develops to a certain stage, so that a space is made for the regeneration of new bones of an organism.

For the above mentioned benign focus of bone marrow, the current clearing method mainly includes two methods of open type operation and minimally invasive operation, the open type operation method usually needs to cut the skin, fascia, muscle and periosteum corresponding to the affected part, open the hard cortical bone part outside the bone marrow focus, then reach the bone marrow focus, scrape and clear the focus, the whole operation process has large wound to the patient, the postoperative recovery is slow, meanwhile, the destruction of the local mechanical structure usually needs to be matched with the internal fixation such as steel plate or the mechanical support of the external fixator additionally, when the operation time, operation cost and infection risk are increased, the operation such as taking out the internal fixation or dismantling the external fixator for the second time is also involved, and the cost is huge. Although the minimally invasive surgery method can reduce trauma, the focus is easy to be removed incompletely due to the restriction of the operation space. Patent No. ZL201720641679.1 discloses that by providing an extendable and retractable cutting blade at the tip of the outer sleeve, the radius of rotation of the cutting blade can be adjusted to increase the clearance range. However, the outer sleeve of the device and the inner support rod connected with the cutting blade are straight rods, and need to directly extend into a focus, the direction of the outer sleeve and the inner support rod cannot be adjusted in a bone according to the position of the focus, so that the device is limited in application range, the arm of force of the cutting blade is too long, and the risk of fracture is caused at any time in the use process.

The utility model has the following contents:

the technical problem to be solved is as follows:

the utility model aims at providing a medullary focus clearing device for the operation of clearing away of medullary department focus solves current minimal access surgery equipment and can not be in the bone according to focus position control direction, and application scope is limited, and the cutting arm of force is too long, has the problem of the risk of splitting in the use.

The technical scheme is as follows:

in order to solve the technical problem, the utility model adopts the following technical scheme: a medullary focus removing device comprises a sleeve and a scraper, wherein the sleeve is a flexible hollow sleeve, the scraper comprises a fusiform cutting head, a flexible pipe and an adjuster, the adjuster and the fusiform cutting head are respectively arranged at two ends of the flexible pipe, the regulator comprises a base, a rotating wheel, a stay wire and a connector, wherein one end of the stay wire is provided with a pressing block connected with the fusiform cutting head, the other end of the pull wire penetrates through the interior of the flexible tube and is connected with the rotating wheel, a plurality of connecting ropes are arranged between the pull wire and the flexible tube, one end of the flexible pipe is fixedly connected with the base, the spindle-shaped cutting head is pressed at the other end of the flexible pipe by the pressing block, the connector with base fixed connection, the swiveling wheel with flexible pipe threaded connection, the swiveling wheel rotatably set up in the base with between the connector.

The fusiform cutting head is used for clearing away the focus position of bone marrow matter, the sleeve pipe is used for inserting the focus position in the bone cavity, the flexible pipe is used for through the sleeve pipe inserts the fusiform cutting head, the swiveling wheel is used for rotatory in order to stimulate act as go-between, through the briquetting will the fusiform cutting head compresses, so that the fusiform cutting head inflation, increase the diameter of fusiform cutting head, it is used for keeping to connect the rope act as go-between with relative position between the flexible pipe is fixed, the connector is used for being connected with handle or electric drill, because the flexible pipe with the sleeve pipe is the flexibility, the fusiform cutting head can be according to the arbitrary change direction in position of focus in the bone marrow matter to reach required cutting position.

Further, the base with be equipped with the spacing groove of mutual intercommunication on the connector, the spacing inslot is equipped with the stopper, the stopper with the rim laminating of swiveling wheel, be equipped with fastening bolt on the connector, be equipped with on the stopper with fastening bolt complex screw hole, fastening bolt passes the connector inserts in the screw hole, the stopper is used for injecing the position of swiveling wheel need not adjust during the diameter of fusiform cutting head, through fastening bolt twists in the screw hole, make the stopper will the rim chucking of swiveling wheel can prevent the swiveling wheel is rotatory, when needs are rotatory the swiveling wheel is adjusted during the diameter of fusiform cutting head, will fastening bolt follows the threaded hole is twisted out can.

Further, the connector with all be equipped with on the base one with the parallel countersunk screw hole of fastening bolt, be equipped with on the stopper two with the blind hole that countersunk screw hole corresponds, be equipped with the spring in the blind hole, be equipped with countersunk screw in the countersunk screw hole, the spring quilt countersunk screw compresses tightly in the blind hole, the stopper is in precompression is in under the spring action of spring the spacing inslot prevents the stopper is in fastening screw follows when the screw hole is twisted out follow the spacing inslot is deviate from, simultaneously the stopper can be rotatory give during the swiveling wheel provides certain pressure, prevents the swiveling wheel rotation range is too big or the undersize.

Further, the swiveling wheel is a gear, and the limiting block is convenient for clamping and limiting the rim of the swiveling wheel.

Further, the connector with the base passes through the locating pin and connects, and is convenient the connector with the installation and the dismantlement of base.

Furthermore, the connector is a threaded connector or a clamping connector, can be in threaded connection or clamping connection with an electric drill or a handle, and is convenient to use.

Furthermore, the flexible pipe is a medical stainless steel hose, the sleeve is a medical flexible plastic hose, and the surfaces of the sleeve and the flexible pipe are provided with scales, so that the insertion depth of the flexible pipe and the sleeve during use can be conveniently observed and recorded.

Further, the fusiform cutting head comprises two blade seats, a plurality of blades are evenly distributed in the circumferential direction between the two blade seats, the blades are arc-shaped, and the blade seats are used for compressing the blades under the action of the tensile force of the pull wire when the rotating wheel rotates, so that the radian of the blades is increased, the diameter of the fusiform cutting head is convenient to adjust, and the cutting area is increased.

Further, the sheathed tube front end is equipped with the opening that has the angle of inclination, sheathed tube rear end is equipped with the pointing to open-ended sign, the opening has the angle of inclination and can inject the inflation direction of fusiform cutting head makes the blade struts to required angle, is convenient for control cutting direction, realizes the accurate clearance of focus, the sign can pass through when conveniently operating the sign is judged open-ended direction.

(III) the beneficial effects are as follows:

compared with the prior art, the utility model discloses the beneficial effect who produces is: can adjust the fusiform cutting head of diameter size through the tip setting at the flexible tube, the diameter of fusiform cutting head is pulled the line through the swiveling wheel pulling that sets up at the flexible tube other end and is adjusted, can reach the focus position of optional position in the bone with fusiform cutting head to adjust the diameter size of fusiform cutting head as required, thereby realize the cleaing away of the focus position of equidimension and angle not in the medulla, the wound is little simultaneously, and the treatment effect is improved, does benefit to the postoperative and resumes.

Description of the drawings:

in order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below.

Fig. 1 is a schematic view of the overall structure of the scraper of the bone marrow lesion removing device according to the embodiment of the present invention;

fig. 2 is an exploded view of the scraper of the bone marrow lesion removing apparatus according to the embodiment of the present invention;

fig. 3 is a sectional view of the scraper of the bone marrow lesion removing device according to the embodiment of the present invention;

fig. 4 is a partial cross-sectional view of the regulator of the bone marrow lesion removing device according to the embodiment of the present invention;

fig. 5 is a schematic structural view of the spindle-shaped cutting head of the device for removing a medullary lesion according to the embodiment of the present invention;

fig. 6 is a schematic view illustrating the use of the bone marrow lesion removing device according to the embodiment of the present invention;

fig. 7 is a schematic structural view of the cannula of the bone marrow lesion removing device according to the embodiment of the present invention;

in the figure: 1. a sleeve; 2. a scraper; 21. a spindle-shaped cutting head; 211. a blade seat; 212. a blade; 22. a flexible tube; 23. a regulator; 231. a base; 232. a rotating wheel; 233. a pull wire; 234. a connector; 235. briquetting; 236. connecting ropes; 3. a limiting groove; 4. a limiting block; 5. fastening a bolt; 6. A threaded hole; 7. countersunk screw holes; 8. blind holes; 9. a spring; 10. countersunk head screws; 11. positioning pins; 12. an electric drill; 13. a focus of disease; 14. bone marrow matter; 15. an opening; 16. identification

The specific implementation mode is as follows:

the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1, 2, 3, 4, 5, 6 and 7, the marrow lesion removing device comprises a casing 1 and a scraper 2, the casing 1 is a flexible hollow casing, the scraper 2 comprises a spindle-shaped cutting head 21, a flexible tube 22 and an adjuster 23, the adjuster 23 and the spindle-shaped cutting head 21 are respectively arranged at two ends of the flexible tube 22, the adjuster 23 comprises a base 231, a rotating wheel 232, a pull wire 233 and a connector 234, one end of the pull wire 233 is provided with a pressing block 235 connected with the spindle-shaped cutting head 21, the other end of the pull wire 233 passes through the interior of the flexible tube 22 to be connected with the rotating wheel 232, a plurality of connecting ropes 236 are arranged between the pull wire 233 and the flexible tube 22, one end of the flexible tube 22 is fixedly connected with the base 231, the spindle-shaped cutting head 21 is pressed at the other end of the flexible tube 22 by the pressing block 235, the connector 234 is fixedly connected with the base 231, the rotating wheel 232 is in threaded connection with the flexible, the rotation wheel 232 is rotatably disposed between the base 231 and the connection head 234.

Preferably, be equipped with the spacing groove 3 of mutual intercommunication on base 231 and the connector 234, be equipped with stopper 4 in the spacing groove 3, stopper 4 and the rim laminating of swiveling wheel 232, be equipped with fastening bolt 5 on the connector 234, be equipped with on the stopper 4 with fastening bolt 5 complex screw hole 6, fastening bolt 5 passes connector 234 and inserts in the screw hole 6, stopper 4 is used for injecing the position of swiveling wheel 232, when the diameter of spindle-shaped cutting head 21 need not be adjusted, twist in screw hole 6 through fastening bolt 5, make stopper 4 with the rim chucking of swiveling wheel 232, can prevent that swiveling wheel 232 is rotatory, when the diameter of needs use swiveling wheel 232 to adjust spindle-shaped cutting head 21, it can to twist out fastening bolt 5 from screw hole 6.

Preferably, the connecting head 234 and the base 231 are both provided with a countersunk screw hole 7 parallel to the fastening bolt 5, the limiting block 4 is provided with two blind holes 8 corresponding to the countersunk screw holes 7, a spring 9 is arranged in each blind hole 8, a countersunk screw 10 is arranged in each countersunk screw hole 7, the spring 9 is pressed in each blind hole 8 by the countersunk screw 10, the limiting block 4 is pre-pressed in the limiting groove 3 under the elastic force action of the spring 9, the limiting block 4 is prevented from being separated from the limiting groove 3 when the fastening bolt 5 is screwed out of the threaded hole 6, meanwhile, the limiting block 4 can provide certain pressure for the rotating wheel 232 when the rotating wheel 232 is rotated, and the rotating amplitude of the rotating wheel 232 is prevented from being too large or too small.

Preferably, the rotating wheel 232 is a gear, so that the limiting block 4 can clamp and limit the rim of the rotating wheel 232.

Preferably, the connection head 234 and the base 231 are connected by a positioning pin 11, which facilitates the installation and removal of the connection head 234 and the base 231.

Preferably, the connector 234 is a threaded connector or a snap connector, which can be screwed or snapped with the drill 12 for convenient use.

Preferably, the flexible tube 22 is a medical stainless steel hose, the cannula 1 is a medical flexible plastic hose, and the surfaces of the cannula 1 and the flexible tube 22 are provided with scales, so that the insertion depth of the flexible tube 22 and the cannula 1 during use can be conveniently observed and recorded.

Preferably, the fusiform cutting head 21 includes two blade seats 211, a plurality of blades 212 are evenly distributed in the circumferential direction between the two blade seats 211, the blades 212 are arc-shaped, and when the blade seats 211 rotate the rotating wheel 232, the blades 212 are pressed tightly under the action of the pulling force of the pull wire 233, so that the radian of the blades 212 is increased, the diameter of the fusiform cutting head 21 is convenient to adjust, and the cutting area is increased.

Preferably, the front end of the cannula 1 is provided with an opening 15 with an inclination angle, the rear end of the cannula 1 is provided with a mark 16 pointing to the opening 15, the opening 15 has an inclination angle which can limit the expansion direction of the spindle-shaped cutting head 21, so that the blade 212 is spread to a required angle, the cutting direction is convenient to control, accurate removal of a lesion is realized, and the mark 16 can be used for conveniently judging the direction of the opening 15 through the mark 16 during operation.

The spindle-shaped cutting head 21 is used for clearing a focus part of marrow, the sleeve 1 is used for being inserted into the focus part in a bone cavity, the flexible tube 22 is used for being inserted into the spindle-shaped cutting head 21 through the sleeve 1, the rotating wheel 232 is used for rotating to pull the pull wire 233, the spindle-shaped cutting head 21 is compressed through the pressing block 235, the radian of the blade 212 is increased, the spindle-shaped cutting head 21 is expanded, the diameter of the spindle-shaped cutting head 21 is increased, after adjustment is finished, the fastening screw 5 is screwed into the threaded hole 6 to press the limiting block 4 on the rim of the rotating wheel 232, the rotating wheel 323 is prevented from rotating, the connecting rope 236 is used for keeping the relative position between the pull wire 233 and the flexible tube 22 fixed, the connecting head 234 is used for being connected with the electric drill 12, the spindle-shaped cutting head 21 can be rotated by starting the electric drill 12 to clear the focus 13, and the, the spindle-shaped cutting head 21 may be arbitrarily changed in direction according to the position of the intramedullary lesion 13 to reach a desired cutting position.

The embodiment of the utility model provides an application method of marrow matter focus clearing device as follows:

drilling a hole on the surface of a bone into medullary 14 by using an orthopedic soft drill, wherein the orthopedic soft drill can change the direction in a bone cavity until the bone is drilled to a focus 13 due to the softer medullary, the orthopedic soft drill can be matched with a C-arm machine for perspective confirmation, the insertion depth of the sleeve 1 and the flexible tube 22 is determined according to the entry depth of the orthopedic soft drill, and then the orthopedic soft drill is pulled out; inserting the sleeve 1, inserting the spindle-shaped cutting head 21 along the sleeve 1 until the spindle-shaped cutting head 21 reaches the focus 13, confirming again under the perspective of a C-arm machine, manually rotating the rotating wheel 232, expanding the spindle-shaped cutting head 21 under the tension of the pull wire 233 and the pressing block 235, increasing the radian of the blade 212, increasing the diameter of the spindle-shaped cutting head 21 until the required size is reached, and rotating the fastening bolt 5 to press the limiting block 4 on the rim of the rotating wheel 232 so as to fix the rotating wheel 232; connecting the connector 234 with the electric drill 12, starting the electric drill 12 to rotate the regulator 23, so that the spindle-shaped cutting head 21 repeatedly stirs at the focus part, damages the pathological structure and removes the focus; after the focus 13 is removed, the fastening bolt 5 is screwed out of the threaded hole 6, the rotating wheel 232 is rotated to loosen the stay wire 233, so that the blade 212 is restored, the diameter of the spindle-shaped cutting head 21 is reduced, the spindle-shaped cutting head 21 is withdrawn from the sleeve 1, a pulse pressure flushing gun or a flusher is connected with the sleeve 1 to flush the postoperative part, then bone repair materials such as autologous cancellous bone, allogeneic bone, artificial bone or BMP are implanted along the sleeve 1, the sleeve 1 is withdrawn at the same time, and the operation is finished.

To sum up, the utility model provides a medullary focus clearing device for the operation of cleaing away of medullary department focus solves current minimal access surgery equipment and can not be in the bone according to focus position control direction, and application scope is limited, and the cutting arm of force is too long, has the problem of the risk of breaking off in the use.

The present invention has been described above by way of example, but the present invention is not limited to the above-mentioned embodiments, and any modification or variation based on the present invention is within the scope of the present invention.

Claims (9)

1. A medullary lesion removing device, comprising: comprises a sleeve and a scraper, wherein the sleeve is a flexible hollow sleeve, the scraper comprises a spindle-shaped cutting head, a flexible pipe and an adjuster, the regulator and the fusiform cutting head are respectively arranged at two ends of the flexible pipe, the regulator comprises a base, a rotating wheel, a pull wire and a connector, one end of the stay wire is provided with a pressing block connected with the fusiform cutting head, the other end of the stay wire penetrates through the interior of the flexible pipe and is connected with the rotating wheel, a plurality of connecting ropes are arranged between the pull wire and the flexible pipe, one end of the flexible pipe is fixedly connected with the base, the spindle-shaped cutting head is pressed at the other end of the flexible pipe by the pressing block, the connector is fixedly connected with the base, the swiveling wheel with flexible pipe threaded connection, the swiveling wheel rotatably set up in the base with between the connector.

2. A medullary lesion removal device as defined in claim 1, wherein: the base with be equipped with the spacing groove of mutual intercommunication on the connector, the spacing inslot is equipped with the stopper, the stopper with the rim laminating of swiveling wheel, be equipped with fastening bolt on the connector, be equipped with on the stopper with fastening bolt complex screw hole, fastening bolt passes the connector inserts in the screw hole.

3. A medullary lesion removal device as defined in claim 2, wherein: the connector with all be equipped with one on the base with the parallel countersunk screw hole of fastening bolt, be equipped with two on the stopper with the blind hole that countersunk screw hole corresponds, be equipped with the spring in the blind hole, be equipped with countersunk screw in the countersunk screw hole, the spring quilt countersunk screw compresses tightly in the blind hole.

4. A medullary lesion removal device as defined in claim 1, wherein: the rotating wheel is a gear.

5. A medullary lesion removal device as defined in claim 1, wherein: the connector with the base passes through the locating pin and connects.

6. A medullary lesion removal device as defined in claim 1, wherein: the connector is a threaded connector or a clamping connector.

7. A medullary lesion removal device as defined in claim 1, wherein: the flexible pipe is a medical stainless steel hose, the sleeve is a medical flexible plastic hose, and the surfaces of the sleeve and the flexible pipe are provided with scales.

8. A medullary lesion removal device as defined in claim 1, wherein: the fusiform cutting head comprises two blade seats, a plurality of blades are circumferentially and uniformly distributed between the two blade seats, and the blades are arc-shaped.

9. A medullary lesion removal device as defined in claim 1, wherein: the front end of the sleeve is provided with an opening with an inclination angle, and the rear end of the sleeve is provided with a mark pointing to the opening.

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