CN214017774U - Minimally invasive spinal rod tractor - Google Patents
Minimally invasive spinal rod tractor Download PDFInfo
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- CN214017774U CN214017774U CN202022036573.3U CN202022036573U CN214017774U CN 214017774 U CN214017774 U CN 214017774U CN 202022036573 U CN202022036573 U CN 202022036573U CN 214017774 U CN214017774 U CN 214017774U
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Abstract
The utility model provides a wicresoft's spine stick tractor, include haulage rope, stand pipe, prevent the telescopic machanism soon, the stand pipe is equipped with horizontal pipe and vertical pipe, and horizontal pipe passes through the arc union coupling with vertical pipe, the stand pipe is equipped with two and symmetry and sets up, two the horizontal pipe of stand pipe is inwards docked or the interval sets up, prevent soon telescopic machanism and locate between the vertical pipe of two stand pipes to prevent rotatory the connection with two vertical pipes, the haulage rope passes two stand pipes. The invention has the advantages of simple operation of spinal surgery, small wound, quick recovery of patients after surgery and reduction of pain and economic burden of patients.
Description
Technical Field
The utility model provides a medical instrument, in particular to a minimally invasive spinal rod tractor.
Background
The common method of the posterior internal fixation operation of the spine is an open operation, a large incision is adopted, then muscles are stripped, a U-shaped pedicle screw is directly driven in, and a spinal rod is installed at the tail part of the pedicle screw and then locked. The operation causes a large amount of bleeding of a patient, the damage of local soft tissues, especially muscle and ligament of the posterior spinal column is serious, and the postoperative complications are large, so that the postoperative rehabilitation effect is influenced, and the patient is greatly suffered from pain and economic burden.
SUMMERY OF THE UTILITY MODEL
The utility model provides a minimally invasive spinal rod tractor, which overcomes the defects.
The minimally invasive spinal rod retractor is characterized by comprising a traction rope, a guide tube A and a rotation-preventing telescopic mechanism.
The haulage rope is established to dismantling with spinal rod A and is linked, haulage rope one end is equipped with the external screw thread connector, spinal rod A one end be equipped with connector complex internal thread hole.
The guide pipe A is provided with a transverse pipe A and a vertical pipe, the transverse pipe A is connected with the vertical pipe through an arc pipe, the end face of the transverse pipe A is arranged to be an inclined plane, the appearance of the vertical pipe is arranged to be an anti-rotation body, and the anti-rotation body is arranged to be rectangular, triangular, flat, D-shaped or polygonal. The transverse pipe A is arranged in a U-shaped groove of a first U-shaped pedicle screw and extends out towards a U-shaped groove of a second U-shaped pedicle screw, and the transverse pipe of the other guide pipe A is arranged in a U-shaped groove of a second U-shaped pedicle screw and extends out towards the U-shaped groove of the first U-shaped pedicle screw.
Further the inner hole of the transverse tube A is arranged to be in sliding fit with the traction rope, and the inner holes at two ends of the transverse tube A are provided with bell mouths.
The anti-rotation telescopic mechanism is arranged between the two guide pipes A and is in anti-rotation connection with the upper ends of the two guide pipes A, and is used for adjusting the distance between the two guide pipes A.
The anti-rotation telescopic mechanism consists of an anti-rotation sleeve, a nut and a telescopic rod,
prevent revolving sleeve pipe one end and be equipped with the perpendicular to and prevent revolving sleeve pipe axial and prevent revolving hole A, prevent revolving hole A with prevent that rotation body sliding fit sets up, prevent revolving sleeve pipe axial is equipped with and prevents revolving hole B, prevent revolving hole B and establish to D shape hole, prevent revolving sleeve pipe other end outer fringe and be equipped with the ring channel.
The telescopic link one end is equipped with the axial of perpendicular to telescopic link and prevents revolving hole A, prevent revolving hole A with prevent that rotation body sliding fit sets up, the other end is equipped with the screw rod, the screw rod axial is equipped with the plane, makes the axial view of screw rod be D shape, the screw rod is located prevent revolving in the hole B to prevent revolving sliding fit setting.
The nut is provided with a screw hole and is matched with the screw rod, one end of the nut is provided with a buckle which is clamped into the annular groove and only rotates along the annular groove, the anti-rotation sleeve and the telescopic rod are connected into a whole, the nut rotates left and right, and the anti-rotation telescopic mechanism extends or shortens.
In the minimally invasive spine surgery process, when a spine rod A is required to be connected with two U-shaped pedicle screws, the U-shaped grooves of the two U-shaped pedicle screws are arranged in the same direction, then one guide tube A is inserted from the outer side of a first U-shaped pedicle screw from top to bottom, the minimally invasive incision of the U-shaped pedicle screws can be used for inserting without additional incision, a transverse tube A of the guide tube A is inserted into the U-shaped groove of the first U-shaped pedicle screw and extends towards the U-shaped groove of a second U-shaped pedicle screw, then the other guide tube A is inserted from the outer side of the second U-shaped pedicle screw from top to bottom, the transverse tube A of the guide tube A is inserted into the U-shaped groove of the second U-shaped pedicle screw and extends towards the U-shaped groove of the first U-shaped pedicle screw, then an anti-rotation telescopic mechanism is arranged between the two guide tubes A, and is respectively connected with the anti-rotation rotator through the anti-rotation inner hole A of the anti-rotation sleeve and the anti-rotation inner hole A of the telescopic rod And after the distance between the two guide tubes A is adjusted to be proper by the anti-rotation telescopic mechanism, the traction rope penetrates through an inner hole of one guide tube A and penetrates out of an inner hole of the other guide tube A, the two ends of the traction rope protrude out of the skin, then the two guide tubes A are drawn out in the original way, the traction rope is connected with the spinal rod A, then the traction rope is pulled to pull the spinal rod A to the U-shaped grooves of the two U-shaped pedicle screws, the spinal rod A and the two U-shaped pedicle screws are fixed through the U-shaped grooves, and then the connection between the traction rope and the spinal rod A is removed and the traction rope is pulled out.
Further a wicresoft's spine stick tractor still is equipped with stand pipe B, stand pipe B is equipped with horizontal pipe B and vertical post, and horizontal pipe B passes through the arc post with vertical post and is connected, horizontal pipe B front end is established to the inclined plane, horizontal pipe B hole link up the arc post and form horizontal hole backward along horizontal tube direction, be equipped with the open slot on the horizontal hole pore wall, vertical post is established to preventing the rotator, prevent that the rotator is established to rectangle, triangle-shaped, flat, D type, polygon, when three or more U type pedicle of vertebral arch nails are connected simultaneously to spine stick B as needs, use stand pipe B leads through the U type groove of each piece of U type pedicle of vertebral arch nail in the middle of for the haulage rope.
The operation method requires that the spinal rod B is connected with three U-shaped pedicle screws at the same time: when in operation, the U-shaped grooves of the U-shaped pedicle screws are arranged in the same direction, then one guide tube A is inserted from the outside of a first U-shaped pedicle screw to the outside of a second U-shaped pedicle screw from top to bottom, the transverse tube A is inserted into the U-shaped groove of the first U-shaped pedicle screw and extends out towards the U-shaped groove of the second U-shaped pedicle screw, then one guide tube B is inserted from the outside of the second U-shaped pedicle screw to the first U-shaped pedicle screw, the transverse tube B is inserted into the U-shaped groove of the second U-shaped pedicle screw and extends out towards the U-shaped groove of the first U-shaped pedicle screw, then the anti-rotation telescopic mechanism is arranged between the guide tube A and the guide tube B and is respectively connected with the guide tube A and the guide tube B through the anti-rotation inner holes A at the two ends of the anti-rotation telescopic mechanism, and the anti-rotation telescopic mechanism adjusts the distance between the guide tube A and the guide tube B to be proper, a traction rope penetrates through an inner hole of the guide tube A and stops after penetrating through a transverse hole of the guide tube B, the front end of the traction rope can be observed by poking a minimally invasive incision of the U-shaped pedicle screw, then the guide tube B is operated to be separated from the traction rope from the open slot and drawn out of the guide tube B, then the guide tube B is inserted from top to bottom from the inner side of a second U-shaped pedicle screw relative to a first U-shaped pedicle screw and extends out along the direction of the U-shaped slot after passing through the U-shaped slot of the second U-shaped pedicle screw to the direction of the U-shaped slot of a third U-shaped pedicle screw, then the other guide tube A is inserted from top to bottom from the outer side of the third U-shaped pedicle screw relative to the second U-shaped slot and extends out along the direction of the U-shaped slot after passing through the third U-shaped pedicle screw, then the anti-rotation telescopic mechanism is arranged between the two guide pipes A and B and is respectively connected with the guide pipes A and B through anti-rotation inner holes A at the two ends of the anti-rotation telescopic mechanism, after the anti-rotation telescopic mechanism adjusts the distance between the guide pipes A and B to be proper, the traction rope is clamped by a tool to penetrate into the transverse hole of the guide tube B and penetrate out of the guide tube A, both ends of the traction rope protrude out of the skin, then operating the guide tube B to separate the traction rope from the open slot and drawing out the guide tube B, drawing out the two guide tubes A on the original path, then the traction rope is connected with the spinal rod B, the spinal rod B is drawn to the U-shaped groove of the three U-shaped pedicle screw by pulling the traction rope, and after the spinal rod B and the three U-shaped pedicle screws are fixed through the U-shaped grooves, the traction ropes are detached from the spinal rod B and pulled out.
The beneficial technical effects of the utility model, made things convenient for the excellent operation of wearing in the spinal surgery, the wound is little, and patient's postoperative resumes soon, has alleviateed patient's misery and economic burden.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural view of an embodiment of the guide tube a.
Fig. 3 is a schematic structural diagram of an embodiment of the anti-rotation sleeve.
Fig. 4 is a schematic structural view of an embodiment of the nut.
Fig. 5 is a schematic structural view of an embodiment of the telescopic rod.
Fig. 6 is a schematic structural view of an embodiment of the guide tube B.
Fig. 7 and 8 are schematic structural views of a second embodiment of the present invention.
Detailed Description
The invention will be further explained by the following examples given in conjunction with the drawings.
Fig. 1-5 show a first embodiment of a minimally invasive spinal rod retractor of the present invention.
The minimally invasive spinal rod retractor is characterized by comprising a traction rope 1, a guide tube A2 and a rotation-preventing telescopic mechanism 3.
The haulage rope 1 is established to dismantling with spinal rod A4 and is linked, 1 one end of haulage rope is equipped with the external screw thread connector, spinal rod A4 one end be equipped with connector complex internal thread hole.
The utility model discloses a rotation-proof structure, including stand pipe A2, stand pipe A, horizontal pipe and vertical pipe pass through the arc pipe and are connected, horizontal pipe terminal surface is established to the inclined plane, and vertical pipe appearance is established to rotation-proof body 21, rotation-proof body 21 establishes to rectangle, triangle-shaped, flat, D type, polygon. The transverse tube of the guide tube A2 penetrates through the U-shaped groove of the first U-shaped pedicle screw and extends out towards the U-shaped groove of the second U-shaped pedicle screw, and the transverse tube of the other guide tube A2 penetrates through the U-shaped groove of the second U-shaped pedicle screw and extends out towards the U-shaped groove of the first U-shaped pedicle screw.
The anti-rotation telescopic mechanism 3 is arranged between the two guide tubes A2, is in anti-rotation connection with the upper ends of the two guide tubes A2, and is used for adjusting the distance between the two guide tubes A2.
The anti-rotation telescopic mechanism 3 consists of an anti-rotation sleeve 31, a nut 32 and a telescopic rod 33,
prevent revolving sleeve pipe 31 one end and be equipped with the perpendicular to prevent revolving sleeve pipe 31 axial and prevent revolving hole A311, prevent revolving hole A311 with prevent that rotator 21 sliding fit sets up, prevent revolving sleeve pipe 31 axial is equipped with and prevents revolving hole B312, prevent revolving hole B312 and establish to D shape hole, prevent revolving sleeve pipe 31 other end outer fringe and be equipped with ring channel 313.
The nut 32 is provided with a screw hole matched with the screw rod 332, one end of the nut 32 is provided with a buckle 321 which is clamped into the annular groove 313 and only rotates along the annular groove, the anti-rotation sleeve 31 and the telescopic rod 33 are connected into a whole, the nut 32 rotates left and right, and the anti-rotation telescopic mechanism 3 extends or shortens.
In the process of minimally invasive spine surgery, when a spine rod A4 is needed to connect two U-shaped pedicle screws, the U-shaped grooves of the two U-shaped pedicle screws are arranged in the same direction, then one guide tube A2 is inserted from the outer side of a first U-shaped pedicle screw from top to bottom, the minimally invasive incision of the U-shaped pedicle screws can be used for being inserted into a non-additional incision, a transverse tube of the guide tube A3526 is inserted into the U-shaped groove of the first U-shaped pedicle screw and extends out towards the U-shaped groove of a second U-shaped pedicle screw, then the other guide tube A2 is inserted from the outer side of the second U-shaped pedicle screw from top to bottom, the transverse tube of the guide tube A2 is inserted into the U-shaped groove of the second U-shaped pedicle screw and extends out towards the U-shaped groove of the first U-shaped pedicle screw, then the anti-rotation telescopic mechanism 3 is arranged between the two guide tubes A2 and passes through the anti-rotation A311, two inner holes at two ends of the anti-rotation telescopic mechanism 3, A331 is respectively connected with anti-rotation bodies 21 at the upper ends of two guide tubes A2, after the distance between the two guide tubes A2 is adjusted to be proper by the anti-rotation telescopic mechanism 3, the traction rope 1 is penetrated through an inner hole of one guide tube A2 and penetrated out through an inner hole of the other guide tube A2, the two ends of the traction rope 1 are protruded out of the skin, then the two guide tubes A2 are drawn out in the original way, the traction rope 1 is connected with a spinal rod A4, then the spinal rod A4 is pulled to the U-shaped grooves of the two U-shaped pedicle screws by pulling the traction rope 1, after the spinal rod A4 is fixed with the two U-shaped pedicle screws through the U-shaped grooves, the connection between the traction rope 1 and the spinal rod A4 is removed, and the traction rope 1 is pulled out.
Fig. 2-8 illustrate a second embodiment of a minimally invasive spinal rod retractor of the present invention.
The minimally invasive spinal rod retractor is further provided with a guide tube B5, the guide tube B5 is provided with a transverse tube B and a vertical column, the transverse tube B is connected with the vertical column through an arc-shaped column, the front end of the transverse tube B is set to be an inclined plane, an inner hole of the transverse tube B is communicated with the arc-shaped column backwards along the transverse tube direction to form a transverse hole 52, an open slot 53 is formed in the hole wall of the transverse hole 52, the vertical column is set to be a rotation preventing body 51, the rotation preventing body 51 is set to be rectangular, triangular, flat, D-shaped and polygonal, and when 3 or more U-shaped pedicle screws are required to be connected with the spinal rod B6 at the same time, the guide tube B5 is used as a traction rope 7 and is guided through U-shaped grooves of the middle U-shaped pedicle screws.
When an operation requiring a spinal rod B6 to connect three U-shaped pedicle screws at the same time is performed, firstly, the U-shaped grooves of the U-shaped pedicle screws are arranged in the same direction as shown in figure 7, then a guide tube A2 is inserted from the outside of a first U-shaped pedicle screw to the outside of a second U-shaped pedicle screw from top to bottom, a transverse tube A of the guide tube A is inserted into the U-shaped groove of the first U-shaped pedicle screw and extends towards the U-shaped groove of the second U-shaped pedicle screw, then a guide tube B5 is inserted from the outside of the second U-shaped pedicle screw to the first U-shaped pedicle screw, a transverse tube B of the guide tube B is inserted into the U-shaped groove of the second U-shaped pedicle screw and extends towards the U-shaped groove of the first U-shaped pedicle screw, then an anti-rotation telescopic mechanism 3 is arranged between the guide tube A2 and the guide tube B5, and the anti-rotation telescopic mechanism 3 is arranged in the inner holes of the guide tube A311 and the guide tube B5 through the anti-rotation telescopic mechanism 3 at two ends, A331 is respectively connected with a guide tube A2 and a guide tube B5, after the distance between a guide tube A2 and a guide tube B5 is adjusted to be proper by the anti-rotation telescopic mechanism 3, a traction rope 7 penetrates through an inner hole of the guide tube A2 and stops after penetrating through a transverse hole 52 of a guide tube B5, at this time, the front end of the traction rope 7 can be observed by poking a minimally invasive incision of the U-shaped pedicle screw, then the guide tube B5 is operated to be separated from the traction rope 7 from the open slot 53 and draw out of the guide tube B, then the guide tube B5 is inserted from top to bottom from the inner side of a second U-shaped pedicle screw relative to a first U-shaped pedicle screw, passes through the U-shaped slot of the second U-shaped pedicle screw and then extends out to the U-shaped slot of a third U-shaped pedicle screw along the U-shaped slot direction, then the other guide tube A2 is inserted from top to bottom from the outer side of the second U-shaped pedicle screw relative to the outer side of the second U-shaped pedicle screw, and the traction rope 7 is clamped by a tool to penetrate into the transverse hole 52 of the guide tube B5 and penetrate out of the guide tube A2 after the distance between the guide tube A2 and the guide tube B5 is adjusted by the anti-rotation telescopic mechanism 3, the two ends of the traction rope 7 are protruded out of the skin, then the guide tube B5 is operated to separate the traction rope 7 from the open slot 53 and draw out the guide tube B, the two guide tubes A2 are drawn out in the original way, then the traction rope 7 is connected with the spinal rod B6, and the traction rope 7 is pulled to lead the spinal rod B6 to the U-shaped slot of the U-shaped pedicle screw of the second U-shaped pedicle screw, and after the spinal rod B6 and the three U-shaped pedicle screws are fixed through the U-shaped grooves, the connection between the traction rope 7 and the spinal rod B6 is removed, and the traction rope 7 is pulled out.
Claims (9)
1. The utility model provides a minimally invasive spine stick tractor which characterized in that includes haulage rope, stand pipe A, prevents the telescopic machanism soon, stand pipe A is equipped with horizontal pipe A and vertical pipe, and horizontal pipe A passes through the arc tube with vertical pipe and is connected, stand pipe A is equipped with two and symmetry and sets up, two the inside butt joint of horizontal pipe A of stand pipe A or interval setting, prevent that the telescopic machanism soon locates between two stand pipe A's vertical pipe to with two vertical pipe rotation-proof connection, the haulage rope passes two stand pipe A.
2. The minimally invasive spinal rod retractor according to claim 1, wherein the transverse tube end surface of the guide tube A is provided with an inclined surface, and the vertical tube is provided with an anti-rotation body.
3. The minimally invasive spinal rod retractor according to claim 1, wherein the inner bore of the transverse tube a is arranged to be in sliding fit with the traction rope, and the two ends of the inner bore of the transverse tube a are provided with bellmouths.
4. The minimally invasive spinal rod retractor according to claim 1, wherein the anti-rotation telescoping mechanism is comprised of an anti-rotation sleeve, a nut and a telescoping rod.
5. The minimally invasive spinal rod retractor according to claim 4, wherein the telescopic rod is provided with an anti-rotation inner hole A perpendicular to the axial direction of the telescopic rod at one end and a screw rod at the other end, and the screw rod is provided with a plane in the axial direction.
6. The minimally invasive spinal rod retractor according to claim 4, wherein one end of the anti-rotation sleeve is provided with an anti-rotation inner hole A perpendicular to the axial direction of the anti-rotation sleeve, the anti-rotation sleeve is provided with an anti-rotation inner hole B in the axial direction, and the outer edge of the other end of the anti-rotation sleeve is provided with an annular groove.
7. The minimally invasive spinal rod retractor according to claim 6 wherein the nut is provided with a snap at one end that snaps into the annular groove and is configured to rotate only along the annular groove.
8. The minimally invasive spinal rod retractor according to claim 1, further comprising a guide tube B, wherein the guide tube B is provided with a transverse tube B and a vertical column, the transverse tube B is connected with the vertical column through an arc-shaped column, the front end of the transverse tube B is arranged to be an inclined plane, an inner hole of the transverse tube B penetrates through the arc-shaped column backwards along the transverse tube direction and forms a transverse hole, an open slot is formed in the wall of the transverse hole, and the vertical column is arranged to be a rotation-preventing body.
9. The minimally invasive spinal rod retractor according to claim 1, wherein the pull cords are removably linked to spinal rod a and spinal rod B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022036573.3U CN214017774U (en) | 2020-09-17 | 2020-09-17 | Minimally invasive spinal rod tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022036573.3U CN214017774U (en) | 2020-09-17 | 2020-09-17 | Minimally invasive spinal rod tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214017774U true CN214017774U (en) | 2021-08-24 |
Family
ID=77350053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022036573.3U Active CN214017774U (en) | 2020-09-17 | 2020-09-17 | Minimally invasive spinal rod tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214017774U (en) |
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2020
- 2020-09-17 CN CN202022036573.3U patent/CN214017774U/en active Active
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