CN114848080A

CN114848080A - Intraoperative feeding bone grafting device

Info

Publication number: CN114848080A
Application number: CN202210409159.3A
Authority: CN
Inventors: 李立
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-08-05

Abstract

The invention discloses an intraoperative material-adding bone grafting device, which comprises: one side of the sleeve is provided with a ball head held by a doctor; a support mechanism mounted on the outside of the cannula, the support mechanism supporting the cannula on the surface of the bone after the cannula is inserted into the bone of the patient's spine; the drilling and tapping mechanism is arranged at the end part of the sleeve and sequentially opens and taps the bone of the patient; the bone tapping device comprises a sleeve, a drilling and tapping mechanism, a support mechanism and a probe, wherein the sleeve is arranged in the sleeve, the drilling and tapping mechanism is arranged in the sleeve, the switching mechanism can switch drilling and tapping of the drilling and tapping mechanism, the support mechanism guides bone tapping after drilling of a patient after the switching mechanism is switched to a tapping state, the three steps of drilling, detecting and tapping are integrated, tapping is performed according to the drilling direction in the doctor operation process, the influence on subsequent operations is reduced, the probe can be used for detecting along the drilling direction before tapping, and the operation of a doctor is facilitated.

Description

Intraoperative feeding bone grafting device

Technical Field

The invention relates to the technical field of medical instruments, in particular to an intraoperative material-adding bone grafting device.

Background

Bone grafting is the surgical implantation of bone tissue to the site of a bone defect, requiring reinforcement or fusion in a patient. Because the bone sources are different, the bone transplantation is divided into autologous bone transplantation and allogeneic bone transplantation, and with the progress of refrigeration equipment and sterile preservative technology, allogeneic bones are stored in a bone bank. The common areas include bone defects, nonunion of fractures, filling of cavities left by cystic lesions or scraping of benign tumors, spinal and joint fusion, etc.

The method comprises the steps of implanting bones between spines after the spines of patients need to be partially cut off during spine surgery of the patients, using a vertebral arch nail implantation method during the implantation of the bones between the spines, namely tensioning the spines implanted at two sides of the bones to facilitate the healing between the spines of the subsequent patients and the implanted bones, wherein the conventional vertebral arch nail implantation method firstly needs to use a hole opener to open holes on the side surfaces of the spines, then change a road roller to punch deep holes on the spines, then use a probe to probe whether the inner walls of the holes are sclerotin, use a tap along the direction of the holes after determining that the inner walls of the holes are sclerotin, use the probe to continuously probe after the tapping is finished, and finally fix screws on the spines, but in the surgical process of doctors, the tapping device needs to be taken out after the deep holes are punched, then replace the tapping device to tap, and the tapping may not completely follow the direction of the tapping device during the tapping, during tapping, the bone grafting device can deflect to influence subsequent operations, and the operation of a doctor is inconvenient, so that the bone grafting device with the material added in the operation is provided.

Disclosure of Invention

The invention aims to provide an intraoperative material-adding bone grafting device to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an intraoperative material-adding bone grafting device, comprising:

one side of the sleeve is provided with a ball head held by a doctor;

a support mechanism mounted on the outside of the cannula, the support mechanism supporting the cannula against the surface of the bone after insertion of the cannula into the bone of the patient's spine;

the drilling and tapping mechanism is arranged at the end part of the sleeve and sequentially opens and taps the bone of the patient;

the drilling and tapping mechanism comprises a sleeve, a drilling and tapping mechanism, a switching mechanism and a supporting mechanism, wherein the switching mechanism is installed inside the sleeve, the switching mechanism can switch drilling and tapping of the drilling and tapping mechanism to each other, and the supporting mechanism guides bone tapping after drilling of a patient after the switching mechanism is switched to a tapping state.

Preferably, the supporting mechanism is including installing the stand pipe in the sleeve pipe outside, shifting chute and locking groove have been seted up on the surface of stand pipe, the outside of stand pipe is equipped with the sleeve of cover in shifting chute and locking inslot side, telescopic one side is rotated and is connected with the locking ring, be equipped with in the locking ring at the shifting chute and locking inslot removal's lug, the one end that the sleeve pipe is located drilling tapping mechanism is equipped with the position cover, be equipped with two relative rotations between the sleeve stand pipe and open the bracing piece that is triangle-shaped.

Preferably, the positioning cover is trumpet-shaped, and the positioning cover is attached to the outer side of the bone of the patient.

Preferably, the surface of the guide pipe is provided with an arc-shaped groove, and the outer side of the sleeve is provided with a limiting pin which is positioned in the arc-shaped groove and used for limiting the guide pipe.

Preferably, drilling and tapping mechanism is including installing a plurality of turning blocks at sleeve pipe tip, every one side of turning block all is equipped with the groove of punching, every the opposite face of turning block all is equipped with tapping groove, the turning block rotates along sleeve pipe tip, and is a plurality of the tapping groove of turning block constitutes complete tapping head, the groove of punching extends to the sleeve pipe surface.

Preferably, each rotating block is provided with two punching grooves which are symmetrically distributed, the punching grooves are symmetrically distributed about the central line of the rotating block, and the rotating block is provided with a knife edge part at the position of the punching groove.

Preferably, the rotating shaft of the rotating block is close to one side of the punching groove, and when the rotating block rotates to the outward direction of the tapping groove, the outer diameter of the tapping groove is larger than the radius of the outward direction of the punching groove.

Preferably, the switching mechanism comprises a core pipe arranged in the sleeve, a core rod is arranged in the core pipe, the end portion of the core rod is embedded in the core pipe, a switching block is arranged in the ball head and is in threaded connection with the core pipe, and a transmission piece which is pushed by the core pipe and rotates the rotating block and switches the tapping state or the drilling state is arranged in the sleeve.

The both ends of switching the piece all seted up the screw hole, and wherein the screw hole degree of depth of one end is greater than the screw hole degree of depth of other end, plug and core pipe sliding connection, the tip convergent to the blade form of plug.

Preferably, the driving medium is including installing the rolling disc in the sleeve pipe is inside, the one end of rolling disc is equipped with the catch bar, the catch bar is in the extrusion state, the catch bar is the elastic rod, one side of rolling disc is equipped with the wire rope of being connected with the turning block, the rolling disc is loosened after the core pipe is taken out the core pipe is promoted and is rotated to taut wire rope state by the core pipe after the core pipe reinsertion, wire rope pulling turning block rotates and switches into the tapping state.

After the core tube and the core rod inside the sleeve are drawn out, the probe can be stretched into the sleeve, and then the bone position is detected, so that the damage of the drilling and tapping on the rest of the nerves, blood vessels and other tissues of the patient is avoided.

The invention has at least the following beneficial effects:

the drilling direction is positioned after the bone of the patient is drilled through the supporting mechanism, the drilling is switched into tapping through the matching of the drilling and tapping mechanism and the switching mechanism, and then the bone of the patient is tapped along the supporting mechanism.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a view of another embodiment of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a partial cross-sectional view of the support mechanism of the present invention;

FIG. 5 is a partial cross-sectional view of the ball head of the present invention;

FIG. 6 is a partial view of the drilling and tapping mechanism of the present invention;

FIG. 7 is a partial cross-sectional view of the bushing of the present invention;

FIG. 8 is a partial cross-sectional view of a turning block of the present invention;

fig. 9 is a diagram showing the state of the present invention switched to the tapping form.

In the figure: 1-a sleeve; 2-a ball head; 3-a support mechanism; 30-a limit pin; 31-a guide tube; 32-a moving slot; 33-locking groove; 34-a sleeve; 35-a locking ring; 36-a bump; 37-positioning the cover; 38-a support bar; 39-arc-shaped grooves; 4-drilling and tapping mechanism; 41-turning block; 42-punching grooves; 43-a knife edge part; 44-tapping a groove; 5-a switching mechanism; 51-core tube; 52-a switching block; 53-a mandrel; 6-a transmission member; 61-a rotating disc; 62-a push rod; and 63-steel wire rope.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: an intraoperative feeding bone grafting device, comprising:

the sleeve comprises a sleeve 1, wherein a ball head 2 held by a doctor is arranged on one side of the sleeve 1, and the ball head 2 is convenient for the doctor to hold and extrude the sleeve 1 for use, so that the doctor can conveniently drill and tap;

the supporting mechanism 3 is arranged on the outer side of the sleeve 1, the supporting mechanism 3 supports the sleeve 1 on the surface of a bone after the sleeve 1 is inserted into the spine bone of a patient, the supporting mechanism 3 plays a role in positioning drilling and tapping, a doctor can conveniently tap directly through the guide formed by the supporting mechanism 3 when tapping is performed after drilling is completed, the tapping is positioned in the drilling direction, the possibility of tapping deflection is reduced, and the operation and the subsequent operation of the doctor are facilitated;

the drilling and tapping mechanism 4 is arranged at the end part of the sleeve 1, the drilling and tapping mechanism 4 sequentially opens holes and taps the bone of a patient, and the drilling and tapping mechanism 4 can be switched to a tapping state after drilling is finished, so that the operation of a doctor is facilitated, the operation time is shortened, and the risk of infection of the operation of the patient is reduced;

switching mechanism 5, switching mechanism 5 installs in the inside of sleeve 34, switching mechanism 5 can switch over drilling tapping of drilling tapping mechanism 4 each other, supporting mechanism 3 switches over to bone tapping direction behind the patient drilling after switching mechanism 5 switches over to the tapping state, and switching mechanism 5 switches over drilling and tapping, and then can survey the back direct tapping that finishes after drilling the probe, and the instrument is comparatively convenient to use.

The supporting mechanism 3 is including installing the stand pipe 31 in the sleeve pipe 1 outside, stand pipe 31 and sleeve pipe 1 swing joint, and stand pipe 31 can slide and rotate on sleeve pipe 1, shifting chute 32 and locking groove 33 have been seted up on the surface of stand pipe 31, the outside of stand pipe 31 is equipped with the sleeve 34 of cover in the shifting chute 32 and locking groove 33 outside, sleeve 34 and sleeve pipe 1 sliding connection, one side of sleeve 34 is rotated and is connected with locking ring 35, locking ring 35 and sleeve 34 are rotated and are connected, be equipped with the lug 36 that removes in shifting chute 32 and locking groove 33 in the locking ring 35, locking ring 35 and lug 36 fixed connection, the one end that sleeve pipe 1 is located drilling and tapping mechanism 4 is equipped with the position cover 37, position cover 37 and sleeve pipe 1 fixed connection, be equipped with two relative rotations between the sleeve 34 stand pipe 31 and open and be triangular bracing piece 38, the two support rods 38 are straight rods, the two support rods 38 are rotatably connected, two ends of each support rod 38 are respectively rotatably connected with the sleeve 34 and the guide tube 31, the plurality of groups of support rods 38 are jointly supported on the bone surface of a patient after being unfolded, and further have the function of positioning the guide tube 31, after a doctor drills the sleeve 1 into the bone of the patient, the other hand of the doctor pushes the guide tube 31, the guide tube 31 slides to the bone surface of the patient along the sleeve 1, the positioning cover 37 is attached to the bone on the drilling surface of the patient, the sleeve 34 and the locking ring 35 are pushed to slide along the moving groove 32, the two support rods 38 are unfolded and move, the support rods 38 are directly abutted against the outer side of the bone of the patient, at the moment, the locking ring 35 is rotated, the locking ring 35 drives the lug 36 to be inserted into the locking groove 33, so as to lock the support rods 38, at the moment, one hand of the doctor presses the top of the locking ring 35, several of the support rods 38 may be supported on the bone surface of the patient to provide a stable support for subsequent tapping after drilling.

Location cover 37 is the loudspeaker form, location cover 37 laminates in the patient bone outside, and location cover 37 makes things convenient for the preliminary location to patient bone surface, makes things convenient for the butt on the surface of patient bone, reduces the damage to patient bone.

Arc wall 39 has been seted up on the surface of stand pipe 31, sleeve pipe 1's the outside is equipped with and is located arc wall 39 interior spacing spacer pin 30 to stand pipe 31, spacer pin 30 and sleeve pipe 1 fixed connection, when the doctor drills to patient's bone, the arc wall 39 of stand pipe 31 keeps comparatively stable state under spacer pin 30's effect this moment, and then makes things convenient for the doctor to rotate stand pipe 31 after drilling finishes, breaks away from spacer pin 30 with arc wall 39, makes things convenient for the follow-up support to patient's bone surface of doctor.

Drilling and tapping mechanism 4 is including installing a plurality of turning blocks 41 at sleeve 1 tip, and every turning block 41 all rotates through the pivot with sleeve 1 and is connected, every one side of turning block 41 all is equipped with the groove of punching 42, every the opposite face of turning block 41 all is equipped with tapping groove 44, turning block 41 rotates along sleeve 1 tip, and is a plurality of tapping groove 44 of turning block 41 constitutes complete tapping head, the groove of punching 42 extends to sleeve 1 surface, and a side of turning block 41 is the groove of punching 42, and a plurality of turning blocks 41 constitute complete cylindric that punches, and when a plurality of turning blocks 41 overturn, tapping groove 44 of another side of turning block 41 forms complete tapping head, and then conveniently punches the tapping of position to the patient, and then make things convenient for the installation of follow-up screw.

Every be equipped with two slots 42 that punch that are the symmetric distribution on the turning block 41, the slot 42 that punches is the symmetric distribution about the central line of turning block 41, turning block 41 is located slot 42 department of punching and is equipped with cutting edge portion 43, and turning block 41 is when rotating along with sleeve pipe 1, and the slot 42 that punches of turning block 41 both sides forms cutting edge portion 43, and cutting edge portion 43 all can punch the bone no matter when sleeve pipe 1 corotation or reversal, then extrudees the bone to the bone surface from the slot 42 that punches with the broken bone, and then makes things convenient for doctor's operation.

The pivot of turning block 41 is close to one side of the groove 42 of punching, turning block 41 is rotating to tapping groove 44 when outwards, tapping groove 44's external diameter is greater than the radius of the groove 42 of punching when outwards, need punch the position tapping after finishing punching, and turning block 41 rotates to the tapping state after, the external diameter of tapping is greater than the external diameter of punching, more convenient tapping at the position of punching.

The switching mechanism 5 comprises a core pipe 51 installed in the sleeve 1, the core pipe 51 is in sliding connection with the sleeve 1, a switching block 52 is arranged inside the ball head 2, a transmission piece 6 which is pushed by the core pipe 51 to rotate the rotating block 41 and switch tapping or drilling states is arranged inside the sleeve 1, the core pipe 51 is connected inside the ball head 2, the core pipe 51 can be pulled out along with the switching block 52, a hollow area is formed inside the sleeve 1, a probe can be conveniently placed in the hollow area, the core pipe 51 is inserted after the probe is detected, the rotating block 41 is switched to the tapping state by the transmission piece 6, the rotating block 41 can directly tap into a hole along the core pipe 51, and operation of a doctor is facilitated.

The transmission piece 6 comprises a rotating disc 61 installed inside the sleeve 1, the rotating disc 61 is rotatably connected with the inner wall of the sleeve 1, a push rod 62 is arranged at one end of the rotating disc 61, the push rod 62 is fixedly connected with the rotating disc 61, the push rod 62 is in an extrusion state, the push rod 62 is an elastic rod, a steel wire rope 63 connected with a rotating block 41 is arranged on one side of the rotating disc 61, one end of the steel wire rope 63 is fixedly connected with the rotating disc 61, the other end of the steel wire rope 63 is fixedly connected with the rotating block 41, the rotating disc 61 is loosened after the core tube 51 is drawn out, the core tube 51 is pushed by the core tube 51 after being inserted again and rotates to a state of tensioning the steel wire rope 63, and the steel wire rope 63 pulls the rotating block 41 to rotate and is switched to a tapping state.

When a doctor holds the ball head 2 to drill a hole at a position for drilling a hole in a patient, the core tube 51 abuts against the back of the rotating block 41 to limit the rotating block 41, the palm of the doctor abuts against the tops of the ball head 2 and the switching block 52, the sleeve 1 and the rotating block 41 rotate along with the rotation of the ball head 2 while the ball head 2 rotates, the hole drilling groove 42 drills the bone to form a cavity, when the hole drilling depth reaches a standard, the supporting mechanism 3 is pushed open, the supporting mechanism 3 is supported on the surface of the bone of the patient, the doctor pulls the switching block 52 and the core tube 51 out of the sleeve 1, the doctor inserts a probe into the hollow position in the middle of the sleeve 1 to detect whether the hole drilling position is the bone or not, when the core tube 51 is pulled out, the push rod 62 examines the inner wall of the sleeve 1 under the self elasticity, after the probe detection is finished, the core tube 51 and the switching block 52 are inserted into the sleeve 1 and the ball head 2 again, the core pipe 51 pushes the push rod 62 to move in the inserting process, the rotating disc 61 rotates, the rotating disc 61 pushes the rotating block 41 to rotate, the rotating block 41 rotates to the position that the tapping groove 44 faces outwards, at the moment, the core pipe 51 is inserted into the end of the sleeve pipe 1, the rotating block 41 is positioned on the outer side of the core pipe 51, the rotating block 41 is not prone to rotating, a doctor rotates the sleeve pipe 1 and the ball head 2 along the supporting mechanism 3 again, tapping is conducted on the punching position of a patient, the core pipe 51 plays a role in further guiding the tapping direction during tapping, and tapping on the punching position of the patient is facilitated.

According to the second embodiment, the mandrel 53 is provided inside the core tube 51, the mandrel 53 is slidably connected to the core tube 51, the end of the mandrel 53 is fitted in the core tube 51, and the switching block 52 is screwed to the core tube 51.

The two ends of the switching block 52 are provided with threaded holes, wherein the threaded hole depth of one end is greater than the threaded hole depth of the other end, the core rod 53 is connected with the core tube 51 in a sliding manner, the end part of the core rod 53 is tapered to be in a blade shape, the blade shape of the end part of the core rod 53 is convenient for breaking the bone end part of a patient, the use of the rotating block 41 is assisted, and further the bone of the patient is convenient to be punched, when the core tube 51 and the core rod 53 are drawn out after punching is finished by a doctor, the core tube 51 and the switching block 52 are rotated at the moment, the core tube 51 is detached from the switching block 52, the core tube 51 is screwed into the deep thread groove at the other side of the switching block 52 in a reverse direction and only screwed into a part, the core tube 53 can slide along the core tube 51 relatively, when tapping is carried out, the core tube 51 and the core rod 53 are simultaneously inserted into the cavity of the patient, the core tube 53 retracts into the core tube 51, the core tube 51 is abutted against the bottommost of the hole, and the switching block 52 can directly tap the direction along with the rotation of the sleeve 1 at the moment, the tapping direction and the punching direction are ensured to be the same, and the operation and the subsequent operation of doctors are facilitated.

After the core tube 51 and the core rod 53 in the sleeve 1 are drawn out, the probe can be extended into the sleeve 1, and then the bone position is detected, so that the damage of the rest of the nervous, vascular and other tissues of the patient caused by drilling and tapping is avoided.

Simultaneously partial bone sediment can get into between switching groove and the sleeve pipe 1 when the tapping of individual drilling, can conveniently clear up out partial bone sediment from the screw hole, makes things convenient for beating into of follow-up screw, can also directly arrange into the outside of punching from switching block 52 and sleeve pipe 1 with the bone sediment when rotating switching block 52, makes things convenient for medical personnel's cleanness, reduces the risk that the bone sediment caused the infection to the patient.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An intraoperative material-adding bone grafting device, comprising:

the medical endoscope comprises a sleeve (1), wherein a ball head (2) held by a doctor is arranged on one side of the sleeve (1);

the method is characterized in that:

the supporting mechanism (3), the said supporting mechanism (3) is installed outside the quill (1), the said supporting mechanism (3) supports the said quill (1) on the surface of the bone after the quill (1) is inserted into patient's spinal bone;

the drilling and tapping mechanism (4), the drilling and tapping mechanism (4) is installed at the end of the sleeve (1), and the drilling and tapping mechanism (4) sequentially performs hole forming and tapping on the bone of a patient;

the bone tapping guide device comprises a switching mechanism (5), the switching mechanism (5) is installed inside a sleeve (34), the drilling and tapping of the drilling and tapping mechanism (4) are mutually switched by the switching mechanism (5), and the bone tapping guide device is used for guiding bone tapping after drilling of a patient after the switching mechanism (5) is switched to a tapping state.

2. The intraoperative feeding bone grafting instrument according to claim 1, characterized in that: supporting mechanism (3) are including installing stand pipe (31) in the sleeve pipe (1) outside, shifting chute (32) and locking groove (33) have been seted up on the surface of stand pipe (31), the outside of stand pipe (31) is equipped with sleeve (34) in shifting chute (32) and locking groove (33) outside, one side of sleeve (34) is rotated and is connected with locking ring (35), be equipped with in locking ring (35) and move lug (36) in shifting chute (32) and locking groove (33), the one end that sleeve pipe (1) is located drilling tapping mechanism (4) is equipped with position fixing cover (37), be equipped with two relative rotations and open bracing piece (38) that are triangle-shaped between sleeve (34) stand pipe (31).

3. The intraoperative feeding bone grafting device according to claim 2, characterized in that: the positioning cover (37) is trumpet-shaped, and the positioning cover (37) is attached to the outer side of a bone of a patient.

4. The intraoperative feeding bone grafting device according to claim 2, characterized in that: an arc-shaped groove (39) is formed in the surface of the guide pipe (31), and a limiting pin (30) which is located in the arc-shaped groove (39) and limits the guide pipe (31) is arranged on the outer side of the sleeve (1).

5. The intraoperative feeding bone grafting device according to claim 1, characterized in that: drilling and tapping mechanism (4) are including installing a plurality of turning blocks (41) at sleeve pipe (1) tip, every one side of turning block (41) all is equipped with tapping groove (42), every the opposite face of turning block (41) all is equipped with tapping groove (44), turning block (41) rotate along sleeve pipe (1) tip, and is a plurality of tapping groove (44) of turning block (41) constitute complete tapping head, tapping groove (42) extend to sleeve pipe (1) surface.

6. The intraoperative feeding bone grafting device according to claim 5, characterized in that: every be equipped with two drilling grooves (42) that are the symmetric distribution on turning block (41), drilling groove (42) are the symmetric distribution about the central line of turning block (41), turning block (41) are located drilling groove (42) department and are equipped with cutting edge portion (43).

7. The intraoperative feeding bone grafting instrument according to claim 5, characterized in that: the rotating shaft of the rotating block (41) is close to one side of the punching groove (42), when the rotating block (41) rotates to the outward tapping groove (44), the outer diameter of the tapping groove (44) is larger than the radius of the outward tapping groove (42).

8. The intraoperative feeding bone grafting device according to claim 1, characterized in that: the switching mechanism (5) comprises a core pipe (51) installed in the sleeve (1), a core rod (53) is arranged inside the core pipe (51), the end portion of the core rod (53) is embedded in the core pipe (51), a switching block (52) is arranged inside the ball head (2), the switching block (52) is in threaded connection with the core pipe (51), and a transmission piece (6) which is pushed by the core pipe (51) to rotate the rotating block (41) and switch tapping or drilling states is arranged inside the sleeve (1).

9. The intraoperative charging bone grafting instrument according to claim 8, characterized in that: the transmission piece (6) is including installing rolling disc (61) inside sleeve pipe (1), the one end of rolling disc (61) is equipped with catch bar (62), catch bar (62) are in the extrusion state, catch bar (62) are the elastic rod, one side of rolling disc (61) is equipped with wire rope (63) be connected with turning block (41), rolling disc (61) is loosened after core pipe (51) is taken out core pipe (51) the back is promoted by core pipe (51) and is rotated to taut wire rope (63) state again, wire rope (63) pulling turning block (41) rotate and switch into the tapping state.