CN215349391U - Lumbar zygopophysis fusion screw fixing positioner - Google Patents
Lumbar zygopophysis fusion screw fixing positioner Download PDFInfo
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- CN215349391U CN215349391U CN202120273426.XU CN202120273426U CN215349391U CN 215349391 U CN215349391 U CN 215349391U CN 202120273426 U CN202120273426 U CN 202120273426U CN 215349391 U CN215349391 U CN 215349391U
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- positioning guide
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- sighting device
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Abstract
The utility model discloses a lumbar vertebra zygopophysis fusion screw fixing positioner, which comprises: the locator body, position the guide pin, sight bush and aiming the guide pin; the locator body comprises a longitudinal connecting rod, a locating guide pin connecting rod, a transverse connecting rod, a sighting device sleeve support and a locking screw; the longitudinal connecting rod and the transverse connecting rod are movably connected to form a parallelogram structure; the sighting device sleeve support is fixed at the lower end of the longitudinal connecting rod; the sighting device sleeve is arranged on the sighting device sleeve bracket; the sighting device sleeve is used for inserting the sighting guide needle; the positioning guide pin connecting rod is movably connected with the transverse connecting rod; a positioning guide pin is arranged in the positioning guide pin connecting rod; the end part of the positioning guide pin connecting rod is provided with a fastening screw for fixing the positioning guide pin; the middle section of the needle body of the positioning guide needle is provided with a limiting buckle. The utility model has simple structure, can accurately realize the screw implantation of the intervertebral disc/space fusion minimally invasive surgery, improves the surgery efficiency, reduces the surgery risk, avoids the damage to nerves and blood vessels, and improves the interbody fusion effect.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and particularly relates to a lumbar vertebra zygopophysis fusion screw fixing positioner.
Background
Lumbar degenerative diseases such as lumbar disc protrusion, lumbar instability, lumbar spondylolisthesis and the like account for a considerable proportion in the current orthopedic outpatient service, and the diseases cause continuous pain, incapability of engaging in physical labor and the like to the patients and seriously affect the life quality of the patients. The disease is clinically treated by adopting a method of implanting and fusing intervertebral joint screws at present, and the implantation and fixation of the intervertebral joint screws are the key of the whole operation in the process of the operation. The current mainstream surgical mode is percutaneous operation under the assistance of images, the surgical mode has the advantages of small wound, less tissue stripping and less bleeding and quick recovery, but how to quickly find a screw implantation point and an implantation angle during screw implantation mainly depends on the experience of a surgeon and repeated adjustment in the operation at present, and the professional experience and the manipulation of the surgeon have considerable challenges. While also presenting a significant risk.
In order to assist an operator to find the optimal path for implanting the screw in the operation, the Zeng faithful friend creates a lumbar vertebra lamina articular process screw sighting device (patent number: ZL 200920120264.5), and according to the principle that two points form a line, the device determines an in-point and an out-point by accurately measuring the vertebral lamina camber angle, the distance from the surface of a transverse process to the central axis of the vertebral lamina and the intersection point of the transverse process and the distance from the deep surface value of the spinous process to the intersection point of the central axis of the vertebral lamina and the base of the spinous process and adjusting a positioning rod and a guide sleeve, thereby implanting the screw. The problems with this solution are: needs to assist more external measurement data, and the nail driving point also needs to depend on the experience of a doctor and intraoperative adjustment, so that errors are easy to generate. The utility model of the southern Hua university's utility model' bilateral positioning pedicle screw-setting sighting device '(patent number ZL: 201621234335.0) combines the auxiliary software algorithm according to the detailed image data of the patient's centrum, uses the personalized body and the guide sleeve to help the doctor provide the personalized screw-setting sighting device for each patient, and the device and the method ensure the accuracy of the patient screw-setting to a greater extent, but the operation of the scheme is relatively complex, the requirements on software and image modeling are higher, and the cost is higher. Therefore, how to develop a lumbar vertebra zygopophysis fusion screw fixing and positioning device can realize accurate implantation of screws in minimally invasive surgery so as to improve the surgery efficiency of doctors, reduce surgery risks and experience thresholds of doctors, reduce manufacturing cost and simplify the operation process, and is a direction which needs to be researched by technicians in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a lumbar vertebra zygopophysis fusion screw fixing positioner, which can realize accurate implantation of screws in a minimally invasive surgery, improve the surgery efficiency, reduce the surgery risk and the experience threshold of doctors, reduce the manufacturing cost and simplify the operation process.
In order to solve the technical problems, the technical scheme is as follows:
a lumbar processes fusion screw fixation positioner, comprising: the locator body, position the guide pin, sight bush and aiming the guide pin; the locator body comprises two longitudinal connecting rods, two locating guide pin connecting rods, two transverse connecting rods, a sighting device sleeve support and a locking screw; the longitudinal connecting rods and the positioning guide pin connecting rods are arranged along the longitudinal direction; the transverse connecting rod and the sighting device sleeve support are arranged along the transverse direction; each longitudinal connecting rod is movably connected with each transverse connecting rod through a movable screw, and the two longitudinal connecting rods and the two transverse connecting rods form a parallelogram structure together; the sighting device sleeve supports are respectively fixed at the lower ends of the two longitudinal connecting rods through movable screws; the sighting device sleeve is arranged on the sighting device sleeve bracket; the sighting device sleeve is used for inserting the sighting guide needle; an oblique connecting rod is further arranged between the longitudinal connecting rods, and the locking screw is connected with the oblique connecting rod and used for locking/unlocking the oblique connecting rod; the positioning guide pin connecting rod is movably connected with the two transverse connecting rods respectively; the positioning guide pin connecting rod is of a hollow structure and is used for installing a positioning guide pin; the end part of the positioning guide pin connecting rod is provided with a fastening screw for fixing the positioning guide pin; the middle section of the needle body of the positioning guide needle is provided with a limiting buckle.
By adopting the technical scheme: the locator body is by the three horizontal four vertical' planar structure that vertical connecting rod, location guide pin connecting rod, horizontal connecting rod and sight sleeve support constitute jointly, and this planar structure is under the circumstances that locator locking screw is not locked, and the connecting rod can be adjusted the activity around the movable screw, forms the parallelogram of angle constantly changing. When the locking screw of the positioner is not locked, the whole positioner can be extruded and stretched in a plane to form parallelograms with different angles, and the omnidirectional aiming angle switching can be provided for the sighting device. After the angle adjustment is finished, only one locking screw needs to be screwed, and the whole positioner cannot relatively move, so that a fixed angle is provided for the implantation of the fusion needle and the screw.
Preferably, in the above lumbar process fusion screw fixation fixture: the needle head part of the positioning guide needle is provided with fastening threads.
By adopting the technical scheme: when the location guide pin is implanted and is fixed a position, the structure of the needle head fastening screw thread can help the location guide pin head implant the backbone top layer more easily, and when the subsequent locator adjustment and the operation of fusing the needle location and implanting, keep the position fixed, improve and fuse the needle location precision.
More preferably, in the above-described lumbar processes fusion screw fixation fixture: the transverse connecting rod is provided with a sliding groove, and the positioning guide pin connecting rod is provided with a limiting screw penetrating through the sliding groove.
By adopting the technical scheme: make the location guide pin can slide from side to side in the sliding tray when loosening spacing screw, this locator can be applicable to different patient of intervertebral length, width, clearance difference, through the position of the portable location guide pin connecting rod of adjustment, can provide the fusion needle location of screw implantation and aim for the patient of different physiological characteristics.
Further preferably, in the above-described lumbar arthrodesis fusion screw fixation fixture: and a plurality of groups of mounting holes are formed in the rod body of the longitudinal connecting rod, and the size of each mounting hole corresponds to that of the movable screw.
By adopting the technical scheme: by adopting the technical scheme: the horizontal connecting rod of the positioner can be arranged on different mounting hole positions and is matched with positioning guide pins with different length and size, so that the positioner can be suitable for patients with different subcutaneous fat, muscle and tissue thicknesses. For the patients with obesity and large subcutaneous fat thickness, only the second locator transverse connecting rod is arranged in the mounting hole closer to the upper part, and the matched longer locating guide needle is selected.
Compared with the prior art, the utility model has the advantages of simple structure, convenient operation and low dependence on doctor experience and manipulation. The fixing screw can be quickly, accurately and safely placed by an assistant operating doctor based on a minimally invasive operation, accurately passes through the base of the spinous process to the opposite side inferior articular process and then to the superior articular process of the inferior vertebra, and a good biomechanical effect is realized. The efficiency of the operation is improved, reduce the operation risk, avoid the damage to peripheral nerve, blood vessel, improve the interbody fusion effect. The utility model has simple structure, low manufacturing cost and convenient operation.
Drawings
The utility model will be described in further detail with reference to the following detailed description and accompanying drawings:
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a schematic diagram of the two positioning guide pin head tips and the aiming guide pin at this time of the present invention;
the correspondence between each reference numeral and the part name is as follows:
1. a locator body; 2. positioning a guide pin; 3. a sight sleeve; 4. aiming the guide needle;
11. a longitudinal link; 12. positioning a guide pin connecting rod; 13. a transverse connecting rod; 14. a sight sleeve mount; 15. a first movable screw; 16. locking screws; 17. a second movable screw; 21. a limiting buckle; 22. fastening threads; 131. a sliding groove; 122. a limiting screw; 111. mounting holes; 121. fastening screws; 161. an oblique connecting rod.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the following will be further described with reference to various embodiments.
FIG. 1 shows example 1 of the present invention:
a lumbar processes fusion screw fixation positioner, comprising: the locator body 1, location guide pin 2, sight sleeve 3 and aiming guide pin 4.
The locator body 1 comprises two longitudinal connecting rods 11, two locating guide pin connecting rods 12, two transverse connecting rods 13, a sighting device sleeve support 14 and a locking screw 16; the longitudinal connecting rod 11 and the positioning guide pin connecting rod 12 are arranged along the longitudinal direction; the transverse link 13 and the aimer sleeve holder 14 are arranged in the transverse direction; each longitudinal connecting rod 11 is movably connected with each transverse connecting rod 13 through a plurality of first movable screws 15, and the two longitudinal connecting rods 11 and the two transverse connecting rods 13 are intersected to form a parallelogram structure; the sighting device sleeve support 14 is respectively fixed at the lower ends of the two longitudinal connecting rods 11 through two second movable screws 17; the sighting device sleeve 3 is arranged on the sighting device sleeve support 14, and the sighting device sleeve 3 is connected with one end of the sighting device sleeve support 14; the aimer sleeve 3 is used for inserting an aiming guide needle 4; an oblique connecting rod 161 is further arranged between the longitudinal connecting rods 11, and the locking screw 16 is connected with the oblique connecting rod 161 and used for locking/unlocking the oblique connecting rod 161; the two positioning guide pin connecting rods 12 are respectively movably connected with two transverse connecting rods 13; the two positioning guide pin connecting rods 12 and the two transverse connecting rods 13 are intersected to form a parallelogram structure; the positioning guide pin connecting rod 12 is of a hollow structure and is used for installing the positioning guide pin 2; the end part of the positioning guide pin connecting rod 12 is provided with a fastening screw 121 for fixing the positioning guide pin 2; and the middle section of the needle body of the positioning guide needle 2 is provided with a limiting buckle 21.
The needle head of the positioning guide needle 2 is provided with a fastening thread 22. The fastening thread 22 is used to achieve the fixation of the positioning tip segment at the center of the ratchet point.
In this example: the transverse connecting rod 13 is provided with a sliding groove 131, and the positioning guide pin connecting rod 12 is provided with a limit screw 122 penetrating through the sliding groove 131. So that the positioning guide pin connecting rod 12 can realize position sliding in the sliding groove 131. A plurality of groups of mounting holes 111 are arranged at the crossing positions of the rod body of the longitudinal connecting rod 11 and the transverse connecting rod 13, and the size of each mounting hole 111 corresponds to that of the first movable screw 15.
In practice, the working process is as follows:
s1: firstly, a doctor positions the center point of the spinous process under the assistance of C-arm X-ray images, inserts a positioning guide pin 2, and fixes the positioning guide pin 2 at the center point of the spinous process by using a fastening thread 22 formed on the head of the positioning guide pin;
s2: the center point of the inferior articular process is positioned under the assistance of the C-arm X-ray image, and another positioning guide pin 2 is vertically inserted into the skin;
s3: adjusting the position of the movable positioning guide pin connecting rod 12 in the connecting rod sliding groove 131 of the positioning guide pin 2 until the distance between the two positioning guide pin connecting rods 12 is equal to the distance between the two positioning guide pins 2;
s4: sleeving two positioning guide pin connecting rods 12 on the positioner body 1 from the upper parts of the two positioning guide pins 2;
s5: extruding/drawing the positioner body 1, and adjusting the angle of each parallelogram in the positioner body 1 until the bottoms of the two positioning guide pin connecting rods 12 are respectively abutted against the limiting buckles 21 of the two positioning guide pins 2;
s6: fastening screws 121 at the lower part of the connecting rod 12 of the positioning guide pin are locked, so that the positioner body 1 and the two positioning guide pins 2 form a whole with fixed relative positions;
s7: adjusting the positioner body 1 to a station convenient for subsequent operation, adjusting the locking screw 16, and locking the positioner body 1;
s8: the aimer sleeve 3 is inserted into the aimer sleeve holder 14 with the head of the aimer sleeve 3 against the skin of the patient, and the aiming guide needle 4 is inserted from inside the aimer sleeve 3 and percutaneously inserted into the patient.
As shown in fig. 2, the design and manufacture of the lumbar-zygapophyseal fusion screw fixing positioner body of the utility model have strictly limited the three-transverse four-longitudinal plane structure, the transverse rods are parallel to each other, the longitudinal rods are also parallel to each other, and the length of each connecting rod is also strictly limited. As shown in FIG. 2, AB is parallel and equal to CD (which is a strict design and manufacturing constraint), so ACDB is a parallelogram and BD is parallel to AC. AB is parallel and equal to EF (strictly limited at design and manufacture), so AEFB is parallelogram and BF is parallel to AC (AC and AE are on the same line). AB is parallel and equal to GH (strictly limited in design and manufacture), so AGHB is a parallelogram and BH is parallel to AC (AC and AG are on the same line). Therefore, BD, BF and BH are all parallel to AC, and in one plane, only one straight line is parallel to the other straight line through one point, so B, D, F, H is on the same straight line, namely, the top ends of the heads of the two positioning guide needles and the aiming guide needle at the moment are on the same straight line.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. The protection scope of the utility model is subject to the scope of the claims.
Claims (4)
1. A lumbar processes fusion screw fixation locator, comprising: the device comprises a locator body (1), a locating guide pin (2), a sighting device sleeve (3) and a sighting guide pin (4);
the locator body (1) comprises two longitudinal connecting rods (11), two locating guide pin connecting rods (12), two transverse connecting rods (13), a sighting device sleeve support (14) and a locking screw (16); the longitudinal connecting rod (11) and the positioning guide pin connecting rod (12) are arranged along the longitudinal direction; the transverse connecting rod (13) and the sighting device sleeve support (14) are arranged along the transverse direction; each longitudinal connecting rod (11) is movably connected with each transverse connecting rod (13) through a movable screw (15), and the two longitudinal connecting rods (11) and the two transverse connecting rods (13) form a parallelogram structure together; the sighting device sleeve supports (14) are respectively fixed at the lower ends of the two longitudinal connecting rods (11) through movable screws (15); the sighting device sleeve (3) is arranged on the sighting device sleeve support (14); the sighting device sleeve (3) is used for inserting a sighting guide needle (4); an oblique connecting rod (161) is further arranged between the longitudinal connecting rods (11), and the locking screw (16) is connected with the oblique connecting rod (161) and used for locking/unlocking the oblique connecting rod (161);
the positioning guide pin connecting rod (12) is movably connected with the two transverse connecting rods (13) respectively; the positioning guide pin connecting rod (12) is of a hollow structure and is used for installing a positioning guide pin (2); a fastening screw (121) for fixing the positioning guide pin (2) is arranged at the end part of the positioning guide pin connecting rod (12); and the middle section of the needle body of the positioning guide needle (2) is provided with a limiting buckle (21).
2. The lumbar processes fusion screw fixation positioner of claim 1, wherein: the needle head part of the positioning guide needle (2) is provided with a fastening thread (22).
3. The lumbar processes fusion screw fixation positioner of claim 1, wherein: the transverse connecting rod (13) is provided with a sliding groove (131), and the positioning guide pin connecting rod (12) is provided with a limiting screw (122) penetrating through the sliding groove (131).
4. The lumbar processes fusion screw fixation positioner of claim 1, wherein: a plurality of groups of mounting holes (111) are formed in the rod body of the longitudinal connecting rod (11), and the size of each mounting hole (111) corresponds to that of the movable screw (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120273426.XU CN215349391U (en) | 2021-02-01 | 2021-02-01 | Lumbar zygopophysis fusion screw fixing positioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120273426.XU CN215349391U (en) | 2021-02-01 | 2021-02-01 | Lumbar zygopophysis fusion screw fixing positioner |
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| CN215349391U true CN215349391U (en) | 2021-12-31 |
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| CN202120273426.XU Active CN215349391U (en) | 2021-02-01 | 2021-02-01 | Lumbar zygopophysis fusion screw fixing positioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114176800A (en) * | 2022-01-04 | 2022-03-15 | 上海交通大学 | Femoral head core decompression operation positioner and decompression method thereof |
| CN114557760A (en) * | 2022-03-01 | 2022-05-31 | 戴建辉 | Guider for spinous process vertebral lamina articular process screw and using method thereof |
-
2021
- 2021-02-01 CN CN202120273426.XU patent/CN215349391U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114176800A (en) * | 2022-01-04 | 2022-03-15 | 上海交通大学 | Femoral head core decompression operation positioner and decompression method thereof |
| CN114176800B (en) * | 2022-01-04 | 2024-01-30 | 上海交通大学 | Femoral head marrow core decompression operation positioner and decompression method thereof |
| CN114557760A (en) * | 2022-03-01 | 2022-05-31 | 戴建辉 | Guider for spinous process vertebral lamina articular process screw and using method thereof |
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