CN217219126U - Electric end plate cutter - Google Patents

Abstract

The application discloses electronic end plate cutter, including outer cutter pipe, interior cutter arbor, drive assembly and actuating mechanism, in outer cutter pipe was arranged in to interior cutter arbor, outer cutter pipe was stretched out at the both ends of interior cutter arbor, and one end is equipped with the tool bit, and the other end is connected with drive assembly, and actuating mechanism is connected with the drive assembly drive, drives drive assembly, and then drives interior cutter arbor and be reciprocating motion in outer cutter pipe. The utility model discloses an electronic endplate cutterbar, actuating mechanism can drive interior cutter arbor through drive assembly and be reciprocating motion in outer cutter pipe, make the tool bit can carry out the cutting action, adopt the reciprocating motion form to cut, and non-traditional rotatory cutting can implement the operation more accurately, safely in narrow and small space, reduces the operation risk.

Description

Electric end plate cutter

Technical Field

The present application relates to the field of medical devices, and more particularly, to a motorized endplate cutter.

Background

In clinical work, especially in minimally invasive surgery or spinal endoscopic surgery, when an operator performs surgical operations of cutting off intervertebral discs and processing vertebral end plates, the operation space is narrow, the size of a used tool is small, the processing efficiency is not high, and operation risks may be brought.

In addition, when an operator performs surgical operations of cutting intervertebral discs and treating vertebral end plates, the operator needs to sleeve the endoscope tube on the outer tube of the electric end plate cutter for use in a matching manner, but the endoscope tube is held by hands in the traditional Chinese medicine growth time during the surgical process, so that the endoscope tube is easy to shake due to fatigue, and the burden is increased for the operator.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides an electric end plate cutter.

The technical scheme provided by the application is as follows:

the utility model provides an electronic end plate cutter, includes outer sword pipe 1, interior cutter arbor 2, drive assembly and actuating mechanism 6, interior cutter arbor 2 is arranged in outer sword pipe 1, outer sword pipe 1 is stretched out at the both ends of interior cutter arbor 2, and one end is equipped with tool bit 20, and the other end is connected with drive assembly, actuating mechanism 6 is connected with the drive assembly drive, drives drive assembly, and then drives interior cutter arbor 2 and be reciprocating motion in outer sword pipe 1.

Preferably, the outer cutter tube 1 and the inner cutter bar 2 are arc-shaped, and the center lines of the outer cutter tube 1 and the inner cutter bar 2 are superposed; the inner cutter bar 2 is hinged with the transmission component, and the transmission component can drive the inner cutter bar 2 to do arc reciprocating motion in the outer cutter tube 1.

Preferably, the transmission assembly comprises a rotating part 5 and an advance and retreat rod 4, wherein the advance and retreat rod 4 is connected with the inner cutter rod 2, the rotating part 5 is in linkage connection with the advance and retreat rod 4, the driving mechanism 6 is in driving connection with the rotating part 5 of the transmission assembly and can drive the rotating part 5 to rotate, and the rotating part 5 drives the advance and retreat rod 4 to make reciprocating linear motion so as to drive the inner cutter rod 2 to make reciprocating motion in the outer cutter tube 1.

Preferably, the rotating member 5 is provided with a poking needle 51, the advancing and retreating rod 4 is provided with a spiral groove 401, the spiral groove 401 is a circle of spiral grooves connected end to end, and the poking needle 51 of the rotating member 5 is in sliding fit with the spiral groove 401 of the advancing and retreating rod 4.

Preferably, the rotating member 5 is a sleeve structure with two open ends, the setting needle 51 protrudes from the inner side wall of the rotating member 5, the driving shaft of the driving mechanism 6 is fixedly connected in one port of the rotating member 5, one end of the advancing and retreating rod 4 is inserted into the other port of the rotating member 5, and the setting needle 51 of the rotating member 5 is clamped in the spiral groove 401 of the advancing and retreating rod 4.

Preferably, the advancing and retreating rod 4 is hinged to the inner cutter bar 2 through a connecting piece 3, a connecting bayonet and a first hinge hole are arranged at two ends of the connecting piece 3, a second hinge hole 402 is arranged at one end of the advancing and retreating rod 4, one end of the advancing and retreating rod 4 is inserted into the connecting bayonet at one end of the connecting piece 3, and the advancing and retreating rod 4 is hinged to the connecting piece 3 by inserting the first hinge shaft 31 into the first hinge hole and the second hinge hole 402; one end of the inner cutter bar 2 is provided with a third hinge hole, one end of the inner cutter bar 2 is inserted into the connecting bayonet at the other end of the connecting piece 3, and the second hinge shaft 32 is inserted into the first hinge hole and the third hinge hole to realize that the inner cutter bar 2 is hinged with the connecting piece 3.

Preferably, the anti-rotation device further comprises a rotation stopping lantern ring 71, and the advancing and retreating rod 4 passes through an axial hole of the rotation stopping lantern ring 71 and is in sliding fit with the rotation stopping lantern ring 71.

Preferably, still include interior casing 7, well casing 8, outer casing 9 and back lid 10 cover are on the both ends of well casing 8 and are docked together, interior casing 7 is fixed in well casing 8 and corresponding with outer casing 9, actuating mechanism 6 is fixed in well casing 8 and corresponding with back lid 10, rotating member 5 installs in interior casing 7, the one end of outer cutter tube 1 inserts and fixes in interior casing 7.

Preferably, the rotating member 5 is installed in the inner housing 7 through a large bearing 72 and a small bearing 73 sleeved on both ends, and a first supporting step matched with the large bearing 72 and a second supporting step matched with the small bearing 73 are arranged on the inner side wall of the inner housing 7; the outer cutter tube 1 is provided with a fixed seat 101 matched with the inner shell 7, the end part of the fixed seat 101 is provided with a limiting bayonet 102, and the limiting bayonet 102 is matched with a limiting clamping block on the inner side wall of the inner shell 7; the fixing seat 101 is provided with a step surface which is flush with the port of the inner shell 7, and a damping gasket 90 is arranged between the step surface of the fixing seat 101 and the outer shell 9.

Preferably, the end of the tool bit 20 is provided with a cutting tip angle 201, a first connecting arc surface 202 and a first transitional arc surface 203 which are positioned on the inner side, and a second connecting arc surface 204 and a second transitional arc surface 205 which are positioned on the outer side, the first connecting arc surface 202 is connected between one side of the cutting tip angle 201 and the first transitional arc surface 203, and the second connecting arc surface 204 is connected between the other side of the cutting tip angle 201 and the second transitional arc surface 205; the included angle of the cutting sharp angle 201 is alpha, alpha is more than or equal to 55 degrees and is less than 90 degrees, the included angle between the cutting edge of the cutting sharp angle 201 and the axial direction of the root part of the cutter head 20 is beta, and beta is more than or equal to 75 degrees and is less than 90 degrees.

The utility model discloses an electronic endplate cutterbar, actuating mechanism can drive interior cutter arbor through drive assembly and be reciprocating motion in outer cutter pipe, make the tool bit can carry out the cutting action, adopt the reciprocating motion form to cut, and non-traditional rotatory cutting can implement the operation more accurately, safely in narrow and small space, reduces the operation risk.

In addition, set assorted arc through outer cutter tube and interior cutter arbor, and drive assembly and interior cutter arbor are articulated promptly and interior cutter arbor can swing around the articulated shaft, thereby realize under actuating mechanism's drive, drive assembly drives interior cutter arbor and is pitch arc reciprocating motion in outer cutter arbor, the outer cutter tube of arc is arc reciprocating motion to interior cutter arbor and plays spacing and guide's effect, also provide the support for straight shape endoscope pipe simultaneously, alleviate the burden for the doctor, avoid the shake, reduce the operation risk.

Drawings

In order to more clearly illustrate the embodiments or prior art solutions of the present application, the drawings used in the description of the embodiments or prior art will be briefly described below with reference to fig. 1 to 9, it is obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a sectional view of the outer knife tube, inner knife bar and endoscope of the present invention;

FIG. 2 is a perspective view of the motorized endplate cutter of the present invention;

FIG. 3 is a cross-sectional view of the powered endplate cutter of the invention;

FIG. 4 is a schematic view of the inner structure of the housing of the motorized endplate cutting machine of the present invention;

FIG. 5 is a cross-sectional view of the rotary member and the advancing and retreating rod of the present invention;

FIG. 6 is a perspective view of the advancing/retreating lever of the present invention;

FIG. 7 is a perspective view of the outer knife tube of the present invention;

fig. 8 is a front view of the cutter head of the present invention;

fig. 9 is a schematic view of the included angle of the tool bit of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to fig. 1 to 9, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all 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 application.

As shown in fig. 2-4, the utility model discloses an electronic endplate cutter, including outer sword pipe 1, interior cutter arbor 2, drive assembly and actuating mechanism 6, interior cutter arbor 2 is arranged in outer sword pipe 1, outer sword pipe 1 is stretched out at the both ends of interior cutter arbor 2, and one end is equipped with the tool bit 20 that is used for the cutting, and the other end is connected with drive assembly, actuating mechanism 6 is connected with the drive assembly drive, drives drive assembly, and then drives interior cutter arbor 2 and is reciprocating motion in outer sword pipe 1. The utility model discloses an electronic endplate cutterbar, actuating mechanism can drive interior cutter arbor through drive assembly and be reciprocating motion in outer cutter pipe, make the tool bit can carry out the cutting action, adopt the reciprocating motion form to cut, and non-traditional rotatory cutting can implement the operation more accurately, safely in narrow and small space, reduces the operation risk.

Preferably, the outer cutter tube 1 and the inner cutter bar 2 are arc-shaped, and the center lines of the outer cutter tube 1 and the inner cutter bar 2 are overlapped; the inner cutter bar 2 is hinged with the transmission component, and the transmission component can drive the inner cutter bar 2 to do arc reciprocating motion in the outer cutter pipe 1. Set to assorted arc through outer cutter tube and interior cutter arbor, and drive assembly is articulated with interior cutter arbor and interior cutter arbor can be around the articulated shaft swing promptly, thereby realize under actuating mechanism's drive, drive assembly drives interior cutter arbor and is pitch arc reciprocating motion in outer cutter tube, the outer cutter tube of arc is arc reciprocating motion to interior cutter arbor and plays spacing and guide's effect, simultaneously, as shown in figure 1, straight shape endoscope pipe A cover is on outer cutter tube 1 of arc during the use, outer cutter tube of arc also provides the support for straight shape endoscope pipe, alleviate the burden for the doctor, avoid the shake, reduce the operation risk. As shown in fig. 3, the inner cutter bar 2 of the present invention is a solid bar, and can be designed into a hollow tubular structure, so that the center hole of the inner cutter bar can discharge the tissue fragments and the blood water cut by the cutter head.

As shown in fig. 3-4, the utility model discloses a drive assembly includes rotating member 5 and advance and retreat pole 4, wherein advance and retreat pole 4 is articulated with interior cutter arbor 2, rotating member 5 is connected with advance and retreat pole 4 linkage, actuating mechanism 6 is connected with drive assembly's rotating member 5 drive, can drive rotating member 5 rotatory, and rotating member 5 drives advance and retreat pole 4 reciprocating linear motion, and then drives interior cutter arbor 2 and be pitch arc reciprocating motion in outer cutter pipe 1. Of course, a linear driving mechanism may be used instead of the rotary driving mechanism and the rotary member to directly drive the advancing/retreating rod to reciprocate. The utility model discloses a rotatory rethread rotating member of rotation type actuating mechanism drive rotating member cooperatees with the advance and retreat pole and turns into the translation with rotating to the cutter arbor is pitch arc reciprocating motion in the drive, can reach more high-speed because of the rotation, increases and rotates the translation, thereby realizes driving the high-speed translation of tool bit, and the cutting action is faster, and cutting efficiency is high, and the cutting effect is good. The driving mechanism of the present invention includes a motor and the like, which can drive rotation.

Specifically, as shown in fig. 5, the rotating member 5 is a sleeve structure with two open ends, the setting needle 51 protrudes from the inner side wall of the rotating member 5, the driving shaft of the driving mechanism 6 is fixedly connected in one port of the rotating member 5, one end of the advancing and retreating rod 4 is inserted into the other port of the rotating member 5, and the setting needle 51 of the rotating member 5 is clamped in the spiral groove 401 of the advancing and retreating rod 4.

Specifically, as shown in fig. 5-6, the rotating member 5 is provided with a setting pin 51, the advancing and retreating rod 4 is provided with a spiral groove 401, the spiral groove 401 is a circle of spiral grooves connected end to end, and the setting pin 51 of the rotating member 5 is in sliding fit with the spiral groove 401 of the advancing and retreating rod 4. The rotating member 5 rotates for one circle, and the poking needle 51 pokes the advancing and retreating rod 4 to complete one advancing and retreating cycle. The rotating piece and the advance and retreat rod are matched with each other by the poking needle and the spiral groove to realize rotation, translation and stable and reliable transmission.

Further, as shown in fig. 3-4, the advance-retreat lever 4 is hinged to the inner cutter bar 2 through a connecting piece 3, two ends of the connecting piece 3 are provided with a connecting bayonet and a first hinge hole, one end of the advance-retreat lever 4 is provided with a second hinge hole 402, one end of the advance-retreat lever 4 is inserted into the connecting bayonet at one end of the connecting piece 3, and the advance-retreat lever 4 is hinged to the connecting piece 3 by inserting the first hinge shaft 31 into the first hinge hole and the second hinge hole 402; one end of the inner cutter bar 2 is provided with a third hinge hole, one end of the inner cutter bar 2 is inserted into the connecting bayonet at the other end of the connecting piece 3, and the second hinge shaft 32 is inserted into the first hinge hole and the third hinge hole to realize that the inner cutter bar 2 is hinged with the connecting piece 3.

As shown in fig. 2, the inventive electric endplate cutting device further comprises a rotation stopping sleeve ring 71, the rotation stopping sleeve ring 71 is fixed on the inner side wall of the inner shell 7, and the advancing and retreating rod 4 passes through the axial hole of the rotation stopping sleeve ring 71 and is in sliding fit with the rotation stopping sleeve ring 71. The setting of the rotation stopping lantern ring limits the advancing and retreating rod to only slide along the axial direction of the rotation stopping lantern ring, and prevents the advancing and retreating rod from rotating.

As shown in fig. 2-4, the electric endplate cutting device of the present invention further comprises an inner casing 7, a middle casing 8, an outer casing 9 and a rear cover 10, wherein the outer casing 9 and the rear cover 10 are sleeved at both ends of the middle casing 8 and are butted together, the inner casing 7 is fixed in the middle casing 8 and corresponds to the outer casing 9, the driving mechanism 6 is fixed in the middle casing 8 and corresponds to the rear cover 10, the rotating member 5 is installed in the inner casing 7, and one end of the outer knife pipe 1 is inserted into and fixed in the inner casing 7.

As shown in fig. 3-4, the rotating member 5 is installed in the inner housing 7 through a large bearing 72 and a small bearing 73 sleeved on both ends, and a first supporting step matched with the large bearing 72 and a second supporting step matched with the small bearing 73 are arranged on the inner side wall of the inner housing 7. The outer diameter of the large bearing 72 is larger than that of the small bearing 73, and the small bearing 73 is clamped in the inner shell 7 and falls on the second support step; the large bearing 72 is snapped into the inner shell 7 onto the first support step.

As shown in fig. 3-4, the outer cutter tube 1 has a fixing seat 101 matched with the inner housing 7, as shown in fig. 7, a limiting bayonet 102 is arranged at the end of the fixing seat 101, the limiting bayonet 102 is matched with a limiting clamping block on the inner side wall of the inner housing 7, the limiting bayonet is matched with the limiting clamping block to play a role in rotation stopping, and the shape structures of the limiting clamping block and the limiting bayonet can be square, arc and the like. As shown in fig. 3-4, the fixing seat 101 has a step surface flush with the port of the inner housing 7, and a damping washer 90 is disposed between the step surface of the fixing seat 101 and the outer housing 9, so as to perform a damping function.

As shown in fig. 8, the utility model discloses the structure of tool bit, the root of tool bit 20 are straight or arc cylinder, and the body of interior cutter arbor 2 is arc cylinder, and the root of tool bit 20 is unanimous and is connected with the body tangent of interior cutter arbor 2 with the body external diameter of interior cutter arbor 2. The tip of tool bit 20 is equipped with cutting closed angle 201, is located inboard first connection arc surface 202 and first transition arc surface 203, is located the second connection arc surface 204 and the second transition arc surface 205 in the outside, first connection arc surface 202 is connected between cutting edge and the first transition arc surface 203 on one side of cutting closed angle 201, the second connection arc surface 204 is connected between the another side and the second transition arc surface 205 of cutting closed angle 201, first transition arc surface 203 and second transition arc surface 205 are the concentric circular arc. Specifically, as shown in fig. 9, the included angle of the cutting tip angle 201 is α, 55 ° or more and 90 ° or less, and the included angle between the cutting edge of the cutting tip angle 201 and the axial direction of the root of the cutter head 20 is β, 75 ° or more and 90 ° or less. The two sides of the cutting sharp corner are planes, so that tissues can be cut sharply, the processing is convenient, the inner and outer side connecting arc surfaces and the transition arc surface are both designed into arcs, and the two sides around are designed into smooth transition, so that the internal tissues of a patient are prevented from being injured.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A powered endplate cutter, comprising: including outer sword pipe (1), interior cutter arbor (2), drive assembly and actuating mechanism (6), interior cutter arbor (2) are arranged in outer sword pipe (1), outer sword pipe (1) is stretched out at the both ends of interior cutter arbor (2), and one end is equipped with tool bit (20), and the other end is connected with drive assembly, actuating mechanism (6) are connected with drive assembly drive, drive assembly, and then drive interior cutter arbor (2) and be reciprocating motion in outer sword pipe (1).

2. The powered endplate cutter of claim 1, wherein: the outer cutter tube (1) and the inner cutter rod (2) are arc-shaped, and the center lines of the outer cutter tube (1) and the inner cutter rod (2) are superposed; the inner cutter bar (2) is hinged with the transmission component, and the transmission component can drive the inner cutter bar (2) to do arc reciprocating motion in the outer cutter tube (1).

3. The powered endplate cutter of claim 1 or 2, wherein: the transmission assembly comprises a rotating piece (5) and an advancing and retreating rod (4), wherein the advancing and retreating rod (4) is connected with the inner cutter bar (2), the rotating piece (5) is in linkage connection with the advancing and retreating rod (4), the driving mechanism (6) is in driving connection with the rotating piece (5) of the transmission assembly and can drive the rotating piece (5) to rotate, and the rotating piece (5) drives the advancing and retreating rod (4) to do reciprocating linear motion so as to drive the inner cutter bar (2) to do reciprocating motion in the outer cutter tube (1).

4. The powered endplate cutter of claim 3, wherein: the novel retractable needle is characterized in that a poking needle (51) is arranged on the rotating piece (5), a spiral groove (401) is arranged on the advancing and retreating rod (4), the spiral groove (401) is a circle of spiral grooves connected end to end, and the poking needle (51) of the rotating piece (5) is in sliding fit with the spiral groove (401) of the advancing and retreating rod (4).

5. The powered endplate cutter of claim 4, wherein: the rotating part (5) is of a sleeve structure with openings at two ends, the poking needle (51) protrudes out of the inner side wall of the rotating part (5), the driving shaft of the driving mechanism (6) is fixedly connected in one port of the rotating part (5), one end of the advancing and retreating rod (4) is inserted into the other port of the rotating part (5), and the poking needle (51) of the rotating part (5) is clamped into the spiral groove (401) of the advancing and retreating rod (4).

6. The powered endplate cutter of claim 3, wherein: the advancing and retreating rod (4) is hinged with the inner cutter bar (2) through a connecting piece (3), a connecting bayonet and a first hinge hole are arranged at two ends of the connecting piece (3), a second hinge hole (402) is arranged at one end of the advancing and retreating rod (4), one end of the advancing and retreating rod (4) is inserted into the connecting bayonet at one end of the connecting piece (3), and the first hinge shaft (31) is inserted into the first hinge hole and the second hinge hole (402) to realize the hinging of the advancing and retreating rod (4) and the connecting piece (3); the one end of interior cutter arbor (2) is equipped with the third hinge and connects the hole, the one end of interior cutter arbor (2) inserts in the connection bayonet of connecting piece (3) other end to insert first hinge hole and third hinge through second articulated shaft (32) and connect the hole in realizing that interior cutter arbor (2) is articulated with connecting piece (3).

7. The powered endplate cutter of claim 3, wherein: the anti-rotation device further comprises a rotation stopping lantern ring (71), and the advancing and retreating rod (4) penetrates through an axial hole of the rotation stopping lantern ring (71) and is in sliding fit with the rotation stopping lantern ring (71).

8. The powered endplate cutter of claim 3, wherein: still include interior casing (7), well casing (8), shell body (9) and hou gai (10) cover are in the butt joint together on the both ends of well casing (8), interior casing (7) are fixed in well casing (8) and corresponding with shell body (9), actuating mechanism (6) are fixed in well casing (8) and corresponding with hou gai (10), rotating member (5) are installed in interior casing (7), the one end of outer sword pipe (1) is inserted and is fixed in interior casing (7).

9. The powered endplate cutter of claim 8, wherein: the rotating piece (5) is arranged in the inner shell (7) through a large bearing (72) and a small bearing (73) which are sleeved on two ends of the rotating piece, and a first supporting step matched with the large bearing (72) and a second supporting step matched with the small bearing (73) are arranged on the inner side wall of the inner shell (7); the outer cutter tube (1) is provided with a fixed seat (101) matched with the inner shell (7), the end part of the fixed seat (101) is provided with a limiting bayonet (102), and the limiting bayonet (102) is matched with a limiting clamping block on the inner side wall of the inner shell (7); the fixed seat (101) is provided with a step surface which is parallel and level with the port of the inner shell (7), and a damping gasket (90) is arranged between the step surface of the fixed seat (101) and the outer shell (9).

10. The powered endplate cutter of claim 1 or 2, wherein: the end part of the tool bit (20) is provided with a cutting sharp corner (201), a first connecting arc surface (202) and a first transition arc surface (203) which are positioned on the inner side, and a second connecting arc surface (204) and a second transition arc surface (205) which are positioned on the outer side, the first connecting arc surface (202) is connected between one side of the cutting sharp corner (201) and the first transition arc surface (203), and the second connecting arc surface (204) is connected between the other side of the cutting sharp corner (201) and the second transition arc surface (205); the included angle of the cutting sharp angle (201) is alpha, alpha is more than or equal to 55 degrees and less than 90 degrees, the included angle between the cutting edge of the cutting sharp angle (201) and the axial direction of the root part of the cutter head (20) is beta, and beta is more than or equal to 75 degrees and less than 90 degrees.

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