CN213217533U - Selective pedicle screw - Google Patents
Selective pedicle screw Download PDFInfo
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- CN213217533U CN213217533U CN202020581522.6U CN202020581522U CN213217533U CN 213217533 U CN213217533 U CN 213217533U CN 202020581522 U CN202020581522 U CN 202020581522U CN 213217533 U CN213217533 U CN 213217533U
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Abstract
The utility model discloses a selectivity pedicle of vertebral arch screw, including screw rod, last installation head, the inside through-hole that is provided with of screw rod, the screw rod lower extreme is provided with top, be provided with degree of depth indicator mark on the screw rod outer wall, the screw rod top is provided with go up installation head, it is provided with the side fixed orifices to go up installation head both sides, it is provided with down the fixed orifices to go up installation head lower extreme central authorities, it is provided with the internal thread groove to go up installation head upper end, be provided with supplementary fixed cover in the internal thread groove, be provided with the external thread groove on the supplementary fixed cover outer wall, be provided with positive. Has the advantages that: adopt titanium alloy to make intensity high, internal fixation is internal back through to inside direct injection medicine, can be directly be in the same place with the backbone is long, avoids making a round trip to dismantle the influence that causes the patient, and convenient to use possesses the degree of depth index mark, in time knows the depth of insertion when making things convenient for the operation to realize accurate positioning, conveniently operate.
Description
Technical Field
The utility model relates to the field of medical technology, especially, relate to selectivity pedicle of vertebral arch screw.
Background
Adolescent idiopathic scoliosis refers to a structural scoliosis occurring at puberty or before skeletal maturity without other organic diseases. The special scoliosis of teenagers is one of the common skeletal muscle deformities of teenagers. Due to the characteristics of sound field development of teenagers, how to maximally correct scoliosis deformity, reconstruct spinal balance, reserve more motion segments, reduce spinal degeneration, improve quality of life and reduce complications is still the problem to be solved under the condition of not influencing normal growth and development of the spinal column. At present, the treatment of adolescent special scoliosis is mainly carried out by fixing pedicle screws in the vertebral column to correct the vertebral column. The application number is 201610740489.5's chinese patent, discloses a pedicle of vertebral arch screw, including screw, nail seat, jackscrew and connective bar, on the screw was located to the nail seat, was equipped with U type recess on the nail seat, and the jackscrew holding is in U type recess, and the connective bar passes U type recess from the bottom of jackscrew, and the jackscrew supports with the connective bar and holds, and the transversal U type that personally submits of connective bar. The pedicle screw of the above patent is mostly solid, needs to be dismantled after the postoperative spine recovers, causes very big damage to the patient, when performing the operation in addition, because the length of knowing the screw and having deepened the vertebra that can not be clear leads to the screw to run through the vertebra easily, or the position deviation appears and inserts other positions, causes secondary damage to the health.
Disclosure of Invention
It is an object of the present invention to provide a selective pedicle screw for solving the above problems.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the selective pedicle screw comprises a screw and an upper mounting head, wherein an inner through hole is formed in the screw, a tip is arranged at the lower end of the screw, a depth indication mark is arranged on the outer wall of the screw, the upper mounting head is arranged above the screw, side fixing holes are formed in two sides of the upper mounting head, a lower fixing hole is formed in the center of the lower end of the upper mounting head, an inner thread groove is formed in the upper end of the upper mounting head, an auxiliary fixing sleeve is arranged in the inner thread groove, an outer thread groove is formed in the outer wall of the auxiliary fixing sleeve, and a regular polygon prism short shaft is arranged.
Further, the screw rod is made of titanium alloy.
Furthermore, the diameter of the screw is 2.5mm-7.5mm, and the length of the screw is 10mm-50 mm. The upper mounting head is of a cylindrical structure, and a groove is formed in the middle of the upper mounting head to form a U-shaped structure.
Furthermore, the upper mounting head is made of artificial bones, and the diameter of the upper mounting head is 2-3 times of that of the screw.
Furthermore, the side fixing hole and the lower fixing hole are threaded holes, and the side fixing hole and the lower fixing hole are machined by a high-precision machine tool.
Furthermore, the screw rod is installed in the lower fixing hole through threads, the auxiliary fixing sleeve is fixed in the outer thread groove, and a through hole corresponding to the position and the size of the inner through hole is formed in the center of the regular polygon prism short shaft.
Further, the depth indication mark is marked on the external thread of the screw rod, and the width of the depth indication mark is gradually reduced from top to bottom.
Furthermore, the depth indicator mark is sprayed with food-grade pigment, and the color of the pigment gradually becomes lighter from top to bottom.
Further, the depth indicator may be replaced with an indicator lamp having a pressure sensor.
Furthermore, the inner through hole is formed in the screw rod, and a medicine outlet hole communicated with the inner through hole is formed in the side wall of the center.
Furthermore, the inner through hole is formed in the screw, the tip is of a barb-shaped structure, the tip is equally split into 2-4 petal-shaped split parts, and the inner through hole reaches the center of the split part.
The specific using method comprises the following steps:
a. general anesthesia is carried out on a patient, and a double-cavity trachea is inserted;
b. taking a patient from a prone position, positioning the patient in an operation by using a C-arm X-ray machine, taking a rear median incision after carrying out conventional disinfection, sequentially cutting skin, subcutaneous tissue and deep fascia from an upper vertebral body of an upper end vertebra to a lower vertebral body of a lower end vertebra, and carrying out subperiosteal separation on paravertebral muscles to fully expose vertebral plates and articular processes on two sides;
c. selecting a fixed vertebral body according to preoperative design, implanting a pedicle screw with a proper size in a free-hand mode by matching with a C-arm X-ray machine, sleeving a lengthened metal rod on the regular polygonal column short shaft, rotating the lengthened metal rod to enable the pedicle screw to enter the vertebra, and determining the implantation depth according to the depth indication mark;
d. pre-bending the spine in the physiological bending direction of the spine by using a pre-bending rod, placing a first pre-bending rod on the concave side, rotationally correcting the lateral protrusion, and temporarily locking by using the auxiliary fixing sleeve;
e. the rod is clamped by the rod-holding clamp, and the aim of shape correction is achieved by successively unfolding the rod according to preoperative design;
f. a second pre-bending rod is arranged on the convex side, the lateral bulge is corrected through rotation, the auxiliary fixing sleeve is used for temporary locking, the rod is clamped by the rod clamping clamp, and the rod is gradually opened according to preoperative design to achieve the aim of correcting the shape;
g. and installing connectors in the two adjacent upper mounting heads, and fixing the connectors in the side fixing holes through threads.
The beneficial effects of the utility model reside in that: adopt titanium alloy to make intensity high, internal fixation is internal back through to inside direct injection medicine, can be directly be in the same place with the backbone is long, avoids making a round trip to dismantle the influence that causes the patient, and convenient to use possesses the degree of depth index mark, in time knows the depth of insertion when making things convenient for the operation to realize accurate positioning, conveniently operate.
Drawings
FIG. 1 is a perspective view of an embodiment of the selective pedicle screw of the invention;
FIG. 2 is a simplified front view of an embodiment of the selective pedicle screw of the invention;
FIG. 3 is a schematic view of the sectional structure of the upper end of the selective pedicle screw of the invention;
figure 4 is a schematic front view of an alternative pedicle screw of the present invention.
The reference numerals are explained below:
1. a screw; 2. a lower fixing hole; 3. a regular polygonal prism minor axis; 4. an auxiliary fixing sleeve; 5. an outer thread groove; 6. an internal thread groove; 7. an upper mounting head; 8. a side fixing hole; 9. an inner through hole; 10. a tip; 11. a medicine outlet hole; 12. a depth indication mark; 13. a crotch part.
Detailed Description
The invention will be further described with reference to the following examples and drawings:
the first embodiment is as follows:
as shown in fig. 1-3, the selective pedicle screw includes a screw 1 and an upper mounting head 7, wherein an inner through hole 9 is provided inside the screw 1, a tip 10 is provided at the lower end of the screw 1, a depth indication mark 12 is provided on the outer wall of the screw 1, the upper mounting head 7 is provided above the screw 1, side fixing holes 8 are provided at two sides of the upper mounting head 7, a lower fixing hole 2 is provided at the center of the lower end of the upper mounting head 7, an inner thread groove 6 is provided at the upper end of the upper mounting head 7, an auxiliary fixing sleeve 4 is provided in the inner thread groove 6, an outer thread groove 5 is provided on the outer wall of the auxiliary fixing sleeve 4, and a regular polygon prism short shaft 3 is provided in the.
In this embodiment, the screw 1 is made of titanium alloy.
In the embodiment, the diameter of the screw 1 is 2.5mm-7.5mm, and the length of the screw 1 is 10mm-50 mm. The upper mounting head 7 is of a cylindrical structure, and a groove is formed in the middle of the upper mounting head 7 to form a U-shaped structure.
In this embodiment, the upper mounting head 7 is made of artificial bone, and the diameter of the upper mounting head 7 is 2-3 times of the diameter of the screw rod 1.
In this embodiment, the side fixing hole 8 and the lower fixing hole 2 are both threaded holes, and the side fixing hole 8 and the lower fixing hole 2 are formed by machining with a high-precision machine tool.
In this embodiment, the screw rod 1 is installed in the lower fixing hole 2 through a thread, the auxiliary fixing sleeve 4 is fixed in the external thread groove 5, and a through hole corresponding to the position and size of the inner through hole 9 is formed in the center of the regular polygonal prism short shaft 3.
In this embodiment, the depth indication mark 12 is marked on the external thread of the screw rod 1, and the width of the depth indication mark 12 is gradually reduced from top to bottom.
In this embodiment, the depth indicator 12 is sprayed with an edible pigment, and the color of the pigment gradually becomes lighter from top to bottom.
In this embodiment, the depth indicator 12 may be replaced with an indicator light with a pressure sensor.
In this embodiment, the inner through hole 9 is formed inside the screw rod 1, and the side wall of the center 10 is provided with a medicine outlet 11 communicated with the inner through hole 9.
The specific using method comprises the following steps:
a. general anesthesia is carried out on a patient, and a double-cavity trachea is inserted;
b. taking a patient from a prone position, positioning the patient in an operation by using a C-arm X-ray machine, taking a rear median incision after carrying out conventional disinfection, sequentially cutting skin, subcutaneous tissue and deep fascia from an upper vertebral body of an upper end vertebra to a lower vertebral body of a lower end vertebra, and carrying out subperiosteal separation on paravertebral muscles to fully expose vertebral plates and articular processes on two sides;
c. selecting a fixed vertebral body according to preoperative design, implanting a pedicle screw with a proper size in a free-hand mode by matching with a C-arm X-ray machine, sleeving a lengthened metal rod on the regular polygonal short shaft 3, rotating the lengthened metal rod to enable the pedicle screw to enter the vertebra, and determining the implantation depth according to the depth indication mark 12;
d. pre-bending the spine in the physiological bending direction of the spine by using a pre-bending rod, placing a first pre-bending rod on the concave side, rotationally correcting the lateral protrusion, and temporarily locking by using the auxiliary fixing sleeve 4;
e. the rod is clamped by the rod-holding clamp, and the aim of shape correction is achieved by successively unfolding the rod according to preoperative design;
f. a second pre-bending rod is arranged on the convex side, the lateral bulge is corrected through rotation, the auxiliary fixing sleeve 4 is used for temporary locking, the rod is clamped by the rod clamping clamp, and the rod is gradually opened according to preoperative design to achieve the aim of shape correction;
g. and installing connectors in two adjacent upper mounting heads 7, wherein the connectors are fixed in the side fixing holes 8 through threads to finish fixing.
Example two:
as shown in fig. 3 and 4, the selective pedicle screw comprises a screw 1 and an upper mounting head 7, wherein an inner through hole 9 is formed in the screw 1, a tip 10 is arranged at the lower end of the screw 1, a depth indication mark 12 is arranged on the outer wall of the screw 1, the upper mounting head 7 is arranged above the screw 1, side fixing holes 8 are formed in two sides of the upper mounting head 7, a lower fixing hole 2 is formed in the center of the lower end of the upper mounting head 7, an inner thread groove 6 is formed in the upper end of the upper mounting head 7, an auxiliary fixing sleeve 4 is arranged in the inner thread groove 6, an outer thread groove 5 is formed in the outer wall of the auxiliary fixing sleeve 4, and a regular polygon prism short shaft 3 is arranged in the.
In this embodiment, the screw 1 is made of titanium alloy.
In the embodiment, the diameter of the screw 1 is 2.5mm-7.5mm, and the length of the screw 1 is 10mm-50 mm. The upper mounting head 7 is of a cylindrical structure, and a groove is formed in the middle of the upper mounting head 7 to form a U-shaped structure.
In this embodiment, the upper mounting head 7 is made of artificial bone, and the diameter of the upper mounting head 7 is 2-3 times of the diameter of the screw rod 1.
In this embodiment, the side fixing hole 8 and the lower fixing hole 2 are both threaded holes, and the side fixing hole 8 and the lower fixing hole 2 are formed by machining with a high-precision machine tool.
In this embodiment, the screw rod 1 is installed in the lower fixing hole 2 through a thread, the auxiliary fixing sleeve 4 is fixed in the external thread groove 5, and a through hole corresponding to the position and size of the inner through hole 9 is formed in the center of the regular polygonal prism short shaft 3.
In this embodiment, the depth indication mark 12 is marked on the external thread of the screw rod 1, and the width of the depth indication mark 12 is gradually reduced from top to bottom.
In this embodiment, the depth indicator 12 is sprayed with an edible pigment, and the color of the pigment gradually becomes lighter from top to bottom.
In this embodiment, the depth indicator 12 may be replaced with an indicator light with a pressure sensor.
In this embodiment, the inner through hole 9 is formed inside the screw rod 1, the tip 10 is of a barb-shaped structure, the tip 10 is equally split into 2-4 petals to form a branch part 13, and the inner through hole 9 reaches the center of the branch part 13.
The specific using method comprises the following steps:
a. general anesthesia is carried out on a patient, and a double-cavity trachea is inserted;
b. taking a patient from a prone position, positioning the patient in an operation by using a C-arm X-ray machine, taking a rear median incision after carrying out conventional disinfection, sequentially cutting skin, subcutaneous tissue and deep fascia from an upper vertebral body of an upper end vertebra to a lower vertebral body of a lower end vertebra, and carrying out subperiosteal separation on paravertebral muscles to fully expose vertebral plates and articular processes on two sides;
c. selecting a fixed vertebral body according to preoperative design, implanting a pedicle screw with a proper size in a free-hand mode by matching with a C-arm X-ray machine, sleeving a lengthened metal rod on the regular polygonal short shaft 3, rotating the lengthened metal rod to enable the pedicle screw to enter the vertebra, and determining the implantation depth according to the depth indication mark 12;
d. pre-bending the spine in the physiological bending direction of the spine by using a pre-bending rod, placing a first pre-bending rod on the concave side, rotationally correcting the lateral protrusion, and temporarily locking by using the auxiliary fixing sleeve 4;
e. the rod is clamped by the rod-holding clamp, and the aim of shape correction is achieved by successively unfolding the rod according to preoperative design;
f. a second pre-bending rod is arranged on the convex side, the lateral bulge is corrected through rotation, the auxiliary fixing sleeve 4 is used for temporary locking, the rod is clamped by the rod clamping clamp, and the rod is gradually opened according to preoperative design to achieve the aim of shape correction;
g. and installing connectors in two adjacent upper mounting heads 7, wherein the connectors are fixed in the side fixing holes 8 through threads to finish fixing.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. Selective pedicle screw, characterized in that: including screw rod (1), last installation head (7), screw rod (1) inside is provided with interior through-hole (9), screw rod (1) lower extreme is provided with top (10), be provided with degree of depth index mark (12) on screw rod (1) outer wall, screw rod (1) top is provided with last installation head (7), it is provided with side fixed orifices (8) to go up installation head (7) both sides, it is provided with down fixed orifices (2) to go up installation head (7) lower extreme central authorities, it is provided with interior thread groove (6) to go up installation head (7) upper end, be provided with supplementary fixed cover (4) in interior thread groove (6), be provided with outer thread groove (5) on supplementary fixed cover (4) outer wall, be provided with regular polygon prism minor axis (3) in the middle of supplementary fixed cover (4.
2. The selective pedicle screw as claimed in claim 1, wherein: the screw (1) is made of titanium alloy.
3. The selective pedicle screw as claimed in claim 1, wherein: the diameter of the screw (1) is 2.5mm-7.5mm, and the length of the screw (1) is 10mm-50 mm.
4. The selective pedicle screw as claimed in claim 1, wherein: the upper mounting head (7) is of a cylindrical structure, and a groove is formed in the middle of the upper mounting head (7) to form a U-shaped structure.
5. The selective pedicle screw as claimed in claim 1, wherein: the upper mounting head (7) is made of artificial bones, and the diameter of the upper mounting head (7) is 2-3 times of that of the screw (1).
6. The selective pedicle screw as claimed in claim 1, wherein: the side fixing hole (8) and the lower fixing hole (2) are threaded holes, and the side fixing hole (8) and the lower fixing hole (2) are machined by a high-precision machine tool.
7. The selective pedicle screw as claimed in claim 1, wherein: the screw rod (1) is installed in the lower fixing hole (2) through threads, the auxiliary fixing sleeve (4) is fixed in the outer thread groove (5), and the center of the regular polygon prism short shaft (3) is provided with a through hole corresponding to the position and the size of the inner through hole (9).
8. The selective pedicle screw as claimed in claim 1, wherein: the depth indication mark (12) is marked on the external thread of the screw rod (1), and the width of the depth indication mark (12) is gradually reduced from top to bottom.
9. The selective pedicle screw as claimed in claim 1, wherein: the depth indication mark (12) is sprayed with food grade pigment, and the color of the pigment gradually becomes lighter from top to bottom.
10. The selective pedicle screw as claimed in claim 1, wherein: the depth indication mark (12) can be replaced by an indicator light with a pressure sensor; the inner through hole (9) is formed in the screw rod (1), and a medicine outlet hole (11) communicated with the inner through hole (9) is formed in the side wall of the center (10); the inner through hole (9) is formed in the screw (1), the tip (10) is of a barb-shaped structure, the tip (10) is equally split into 2-4 petal-shaped split parts (13), and the inner through hole (9) reaches the center of the split parts (13).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020581522.6U CN213217533U (en) | 2020-04-18 | 2020-04-18 | Selective pedicle screw |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020581522.6U CN213217533U (en) | 2020-04-18 | 2020-04-18 | Selective pedicle screw |
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| CN213217533U true CN213217533U (en) | 2021-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112790847A (en) * | 2020-09-23 | 2021-05-14 | 罗绍金 | Selective pedicle screw and method of use |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112790847A (en) * | 2020-09-23 | 2021-05-14 | 罗绍金 | Selective pedicle screw and method of use |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230720 Address after: 528000 No.5-6, Lianhe Industrial Zone East 2nd Road, Luocun Village, Shishan Town, Nanhai District, Foshan City, Guangdong Province (residence declaration) Patentee after: Guangdong XingTuo Machinery Co.,Ltd. Address before: Kunming Medical University, 1168 Chunrong West Road, Yuhua street, Chenggong District, Kunming City, Yunnan Province, 650500 Patentee before: Luo Shaojin |
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| TR01 | Transfer of patent right |