CN219207246U - Spinal fixation pin and spinal fixation device - Google Patents
Spinal fixation pin and spinal fixation device Download PDFInfo
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- CN219207246U CN219207246U CN202223001261.4U CN202223001261U CN219207246U CN 219207246 U CN219207246 U CN 219207246U CN 202223001261 U CN202223001261 U CN 202223001261U CN 219207246 U CN219207246 U CN 219207246U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The utility model relates to the technical field of medical appliances, in particular to a spine fixing nail and a spine fixing device. The spine fixing nail comprises a nail rod made of carbon fiber materials, and also comprises a nail sleeve made of titanium alloy materials, wherein the nail sleeve is axially provided with a first blind hole, and the outer surface of the nail sleeve is provided with threads; the nail rod extends into the first blind hole and is connected with the nail sleeve. The spine fixing nail comprises a nail rod and a nail sleeve, wherein the nail sleeve is made of a titanium alloy material, threads made of the titanium alloy material are formed on the outer surface of the nail sleeve, and the hardness of the titanium alloy material is greater than that of a carbon fiber material.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a spine fixing nail and a spine fixing device.
Background
The pedicle screw made of carbon fiber material is used as an advanced composite screw, and has a series of excellent performances such as high light transmittance, low radiation absorptivity and the like, so that the pedicle screw is widely applied to the technical field of medical appliances.
In the prior art, the pedicle screw is made of carbon fiber material, the outer surface of the pedicle screw is formed with threads made of carbon fiber material, and the hardness of the carbon fiber material is lower, which results in lower thread hardness of the pedicle screw.
Therefore, the technical problem of how to improve the screw hardness of the pedicle screw exists in the prior art.
Disclosure of Invention
Aiming at the technical problem of how to improve the screw hardness of the pedicle screw in the prior art, the utility model provides a spine fixing nail and a spine fixing device.
The utility model is realized by the following technical scheme:
the spine fixing nail comprises a nail rod made of carbon fiber materials, and also comprises a nail sleeve made of titanium alloy materials, wherein the nail sleeve is axially provided with a first blind hole, and the outer surface of the nail sleeve is provided with threads; the nail rod extends into the first blind hole and is connected with the nail sleeve.
Further, a second blind hole is formed in the nail rod, and the second blind hole extends along the radial direction of the nail rod;
the nail sleeve is provided with a pin hole, the pin hole penetrates through the side wall of the nail sleeve along the radial direction of the nail sleeve, the hole core line of the pin hole is coaxial with the hole core line of the second blind hole, and the pin hole is communicated with the second blind hole;
the two ends of the first locating pin are respectively defined as a first end and a second end, the first end is inserted into the second blind hole and is in contact or interference connection with the hole wall of the second blind hole, and the second end is inserted into the pin hole and is connected with the hole wall of the pin hole through welding.
Further, the number of pin holes, the number of first positioning pins and the number of second blind holes are all configured to be a first preset number, and the hole center line of any pin hole is coaxial with the hole center line of one of the second blind holes; any one of the pin bores and a second blind bore coaxial with the pin bore collectively receive one of the first locating pins.
Further, the first preset number is an integer greater than or equal to the first preset number, the first preset number of pin holes are arranged at intervals along the circumferential direction of the pin sleeve, and the first preset number of second blind holes are arranged at intervals along the circumferential direction of the pin rod;
or the first preset number is an integer greater than or equal to the first preset number, the first preset number of pin holes are arranged at intervals along the axial direction of the pin sleeve, and the first preset number of second blind holes are arranged at intervals along the axial direction of the pin rod;
alternatively, the first predetermined number is even, the first predetermined number of pin holes are symmetrically disposed about the axis of the sleeve, and the first predetermined number of second blind holes are symmetrically disposed about the axis of the shank.
Further, the first predetermined number is.
Further, the nail rod is provided with a straight hole which is radially communicated;
the nail sleeve is provided with two coaxially arranged fixing holes, any fixing hole penetrates through the side wall of the nail sleeve along the radial direction of the nail sleeve, the straight hole is positioned between the two fixing holes, the hole core line of the straight hole is coaxial with the hole core line of the two fixing holes, and the two fixing holes are communicated through the straight hole;
the spine fixing nail further comprises a second locating pin, two ends of the second locating pin are inserted into the two fixing holes respectively and are connected with the two fixing holes respectively in a welding mode, and part of the second locating pin located between the two ends of the second locating pin is contained in the straight hole and is in contact or interference fit with the wall of the straight hole.
Further, the screw seat, the locking part and the locking ring are also included;
the screw seat is provided with a U-shaped groove, the U-shaped groove is formed by recessing the top of the screw seat towards the bottom of the screw seat, the bottom of the screw seat is provided with a through hole extending along the axial direction of the screw seat, and the through hole intersects with the groove wall of the U-shaped groove and forms an opening; one end of the nail rod is provided with a nail head, the cross section diameter of the nail head is larger than that of the nail rod, one end of the nail rod, which is away from the nail head, extends out of the through hole through the opening, and the nail head is limited in the U-shaped groove;
the locking ring is arranged in the U-shaped groove, and the lower surface of the locking ring is in partial contact or full contact with the upper surface of the nail head;
the screw seat is in threaded connection with the locking component, and a preset interval is formed between the lower surface of the locking component and the upper surface of the locking ring.
Also provided is a spinal fixation device comprising the spinal fixation pin.
Further, the number of spinal fixation pins is at least two;
the spinal fixation device further includes a rod having at least one end detachably connected to one of the spinal fixation pins.
Compared with the prior art, the utility model has the advantages that:
1. in the embodiment, the spine fixing nail comprises a nail rod and a nail sleeve, wherein the nail rod is made of a carbon fiber material, the characteristics of high light transmittance and low radiation absorptivity of the spine fixing nail are reserved, the nail sleeve is sleeved outside the nail rod and connected with the nail rod, the nail sleeve is made of a titanium alloy material, threads made of the titanium alloy material are formed on the outer surface of the nail sleeve, and the hardness of the titanium alloy material is higher than that of the carbon fiber material; the spine fixing nail in this embodiment is made of the titanium alloy material, replaces the threads made of the carbon fiber material in the prior art, and the hardness of the titanium alloy material is greater than that of the carbon fiber material, so that compared with the prior art, the spine fixing nail in this embodiment has higher screw hardness, i.e. this embodiment solves the technical problem of how to improve the screw hardness of the pedicle screw.
Drawings
FIG. 1 is a schematic exploded view of the structure of the spinal staple of example 1;
FIG. 2 is a schematic view of the structure of the spinal staple of example 1;
FIG. 3 is a schematic cross-sectional view of FIG. 2;
FIG. 4 is a schematic view showing the assembly position of the first positioning pin in embodiment 1;
FIG. 5 is a schematic view of the structure of the screw seat in embodiment 1;
FIG. 6 is a schematic view showing the structure of the second positioning pin and the straight hole in embodiment 2;
FIG. 7 is a schematic view of an assembled position of a second dowel of the present utility model;
FIG. 8 is a schematic view of the structure of the nail housing in example 2;
fig. 9 is a schematic view showing the structure of the spinal fixation device in example 3.
Reference numerals: the novel nail comprises a nail rod (1), a nail sleeve (2), a first blind hole (3), a second blind hole (4), a pin hole (5), a first positioning pin (6), a straight hole (7), a fixing hole (8), a second positioning pin (9), a screw seat (10), a locking part (11), a locking ring (12), a U-shaped groove (13), a nail head (14), a through hole (15), an opening (16) and a rod body (17).
Detailed Description
The technical scheme of the utility model is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings. In the description of the present utility model, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. refer to the azimuth or positional relationship based on the azimuth or positional relationship shown in the drawings. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
Example 1
As shown in fig. 1 to 3, the spine fixing nail of the preferred embodiment of the utility model comprises a nail rod 1 made of carbon fiber materials and a nail sleeve 2 made of titanium alloy materials, wherein the nail sleeve 2 is provided with a first blind hole 3 along the axial direction, and the outer surface of the nail sleeve 2 is provided with threads; the nail rod 1 extends into the first blind hole 3 and is connected with the nail sleeve 2.
The nail rod 1 is in a cylindrical or approximately cylindrical structure, the cross section of the first blind hole 3 is circular, and preferably, when the nail rod 1 is inserted into the first blind hole 3, the circumferential outer surface of the nail rod 1 and the hole wall of the first blind hole 3 are in contact with each other; the external thread is formed on the outer surface of the nail sleeve 2, and the screw thread rotation direction can be configured according to actual requirements; the nail rod 1 stretches into the first blind hole 3 and is connected with the nail sleeve 2, the nail rod 1 and the nail sleeve 2 are detachably connected or fixedly connected, and one of the prior art can be adopted for the connection mode of the nail rod 1 and the nail sleeve 2.
In the prior art, the pedicle screw is made of carbon fiber material, the outer surface of the pedicle screw is formed with threads made of carbon fiber material, and the hardness of the carbon fiber material is lower, which results in lower thread hardness of the pedicle screw.
In the embodiment, the spine fixing nail comprises a nail rod 1 and a nail sleeve 2, wherein the nail rod 1 is made of a carbon fiber material, the characteristics of high light transmittance and low radiation absorptivity of the spine fixing nail are reserved, the nail sleeve 2 is sleeved outside the nail rod 1 and connected with the nail rod 1, the nail sleeve 2 is made of a titanium alloy material, threads made of the titanium alloy material are formed on the outer surface of the nail sleeve 2, and the hardness of the titanium alloy material is higher than that of the carbon fiber material; the spine fixing nail in this embodiment is made of the titanium alloy material, replaces the threads made of the carbon fiber material in the prior art, and the hardness of the titanium alloy material is greater than that of the carbon fiber material, so that compared with the prior art, the spine fixing nail in this embodiment has higher screw hardness, i.e. this embodiment solves the technical problem of how to improve the screw hardness of the pedicle screw.
Further, the process of performing a spinal fixation procedure on a patient using a prior art pedicle screw includes: firstly, drilling a preformed hole on the spine of a patient, wherein the preformed hole is a blind hole with an open top; then gradually screwing the screw thread of the pedicle screw into the preformed hole, wherein in the process, the screw thread of the pedicle screw and the hole wall of the preformed hole are rubbed with each other; the screw thread of the pedicle screw in the prior art is made of carbon fiber materials, and because the hardness of the carbon fiber materials is lower than that of the bone of the spine of a patient, the screw thread of the pedicle screw is extruded by the bone of the spine of the patient in the process of screwing the pedicle screw into the reserved hole, and the pedicle screw is easy to break.
The spine fixation nail of the embodiment is adopted, and the spine fixation operation process for the patient comprises the following steps: firstly, drilling a preformed hole on the spine of a patient, wherein the preformed hole is a blind hole with an open top; then, gradually screwing the screw thread of the spine fixing nail into the preformed hole, wherein in the process, the screw thread of the nail sleeve 2 and the hole wall of the preformed hole are rubbed mutually, and the screw thread of the nail sleeve 2 is made of a titanium alloy material, and the screw thread of the spine fixing nail can not be broken even if being extruded by the spine bone of a patient in the process of screwing the spine fixing nail into the preformed hole because the hardness of the titanium alloy material is greater than that of the spine bone of the patient; therefore, the embodiment further solves the technical problem of how to prevent the threads of the spine fixation nail from breaking in the process of screwing into the preformed hole.
Further, in the foregoing, it is mentioned that the pin 1 extends into the first blind hole 3 and is connected with the pin sleeve 2, and how to connect the pin 1 and the pin sleeve 2 is a technical problem to be solved, and the technical problem is solved by the following technical scheme.
Referring to fig. 1 to 4, the shank 1 is provided with a second blind hole 4, and the second blind hole 4 extends in the radial direction of the shank 1; the nail sleeve 2 is provided with a pin hole 5, the pin hole 5 penetrates through the side wall of the nail sleeve 2 along the radial direction of the nail sleeve 2, the hole axis of the pin hole 5 is coaxial with the hole axis of the second blind hole 4, and the pin hole 5 is communicated with the second blind hole 4; the first positioning pin 6 is further included, two ends of the first positioning pin 6 are respectively defined as a first end and a second end, the first end is inserted into the second blind hole 4 and is in contact or interference connection with the hole wall of the second blind hole 4, and the second end is inserted into the pin hole 5 and is connected with the hole wall of the pin hole 5 through welding.
Preferably, the cross section of the second blind hole 4 is circular, the cross section of the pin hole 5 is circular, and the cross section diameter of the second blind hole 4 is matched with the cross section diameter of the pin hole 5; preferably, the second end of the first positioning pin 6 is accommodated in the pin hole 5, and the second end of the first positioning pin 6 does not protrude from the nail sleeve 2 along the radial direction of the nail rod 1; preferably, the first positioning pin 6 is in a cylindrical structure, the first end of the first positioning pin 6 is in interference connection with the hole wall of the second blind hole 4, and the second end of the first positioning pin 6 is connected with the hole wall of the pin hole 5 in a spot welding mode.
In the present embodiment, along the radial direction of the pin 1, the pin 1 is limited by the hole wall of the first blind hole 3, and cannot move relative to the pin sleeve 2, along the axial direction of the pin 1, the pin 1 is limited by the radial direction of the first positioning pin 6, and cannot move relative to the pin sleeve 2, along the circumferential direction of the pin 1, the pin 1 is limited by the radial direction of the first positioning pin 6, and cannot rotate relative to the pin sleeve 2, so that the pin 1 and the pin sleeve 2 are relatively fixed by providing the first positioning pin 6 between the pin 1 and the pin sleeve 2; in summary, the present embodiment solves the technical problem how to connect the pin 1 and the sleeve 2.
Further, the number of pin holes 5, the number of first positioning pins 6 and the number of second blind holes 4 are all configured to be a first predetermined number, and the hole center line of any one pin hole 5 is coaxial with the hole center line of one of the second blind holes 4; any one of the pin holes 5 and the second blind hole 4 coaxial with the pin hole 5 collectively accommodate one of the first positioning pins 6.
Further, the first predetermined number of pin holes 5 and the first predetermined number of second blind holes 4 may be arranged in positions by adopting the following technical scheme: for example, the first predetermined number is an integer of 2 or more, the first predetermined number of pin holes 5 are arranged at intervals along the circumferential direction of the nail sleeve 2, and the first predetermined number of second blind holes 4 are arranged at intervals along the circumferential direction of the nail shaft 1; alternatively, the first predetermined number is an integer of 2 or more, the first predetermined number of pin holes 5 are arranged at intervals along the axial direction of the nail sleeve 2, and the first predetermined number of second blind holes 4 are arranged at intervals along the axial direction of the nail shaft 1.
In the present embodiment, the first predetermined number of pin holes 5 are symmetrically arranged with respect to the axis of the nail sleeve 2, and the first predetermined number of second blind holes 4 are symmetrically arranged with respect to the axis of the nail rod 1; the first predetermined number is 4. In the present embodiment, the number of pin holes 5, the number of first positioning pins 6 and the number of second blind holes 4 are all configured to be plural, that is, a plurality of first positioning pins 6 are provided between the pin shaft 1 and the pin sleeve 2, so that the pin shaft 1 and the pin sleeve 2 are fixed more firmly.
Further, referring to fig. 1, 2 and 5, the spine fixation nail of the present embodiment further comprises a screw seat 10, a locking member 11, and a locking ring 12; the screw seat 10 is provided with a U-shaped groove 13, the U-shaped groove 13 is formed by recessing the top of the screw seat 10 towards the bottom of the screw seat 10, the bottom of the screw seat 10 is provided with a through hole 15 extending along the axial direction of the screw seat 10, and the through hole 15 intersects with the groove wall of the U-shaped groove 13 and forms an opening 16; a nail head 14 is arranged at one end of the nail rod 1, the cross-sectional diameter of the nail head 14 is larger than that of the nail rod 1, one end of the nail rod 1, which is away from the nail head 14, extends out of the through hole 15 through the opening 16, and the nail head 14 is limited in the U-shaped groove 13; the locking ring 12 is arranged in the U-shaped groove 13, and the lower surface of the locking ring 12 is in partial contact or full contact with the upper surface of the nail head 14; the screw seat 10 is screw-coupled with the locking part 11, and a preset interval is formed between the lower surface of the locking part 11 and the upper surface of the locking ring 12.
One or more structures of the screw seat 10, the locking part 11 and the locking ring 12 are made of carbon fiber materials; the screw seat 10 is in threaded connection with the locking component 11, specifically, an external thread is arranged on the outer side of the screw seat 10, the locking component 11 is a nut, an internal thread of the locking component is in threaded connection with the external thread of the screw seat 10, or the groove wall of the U-shaped groove 13 is provided with an internal thread, an external thread is arranged on the outer surface of the locking component, the locking component is inserted into the U-shaped groove 13, and the external thread of the locking component is in threaded connection with the internal thread of the U-shaped groove 13; further, the connection and the positional relationship of the screw seat 10, the locking member 11 and the locking ring 12 are all the prior art, and refer to the disclosure of CN 201910396271.6.
Example 2
The present embodiment is modified to be certain on the basis of embodiment 1, and the same reference numerals will be used for the same parts as those in embodiment 1 and detailed description thereof will be omitted, and only the modified structure will be described in detail below.
In the embodiment 1, one of the connection modes of the nail rod 1 and the nail sleeve 2 is described, and the other connection mode of the nail rod 1 and the nail sleeve 2 is introduced in the embodiment.
Referring to fig. 6 to 8, the shank 1 is provided with a straight hole 7 penetrating radially; the nail sleeve 2 is provided with two fixing holes 8 which are coaxially arranged, any one fixing hole 8 penetrates through the side wall of the nail sleeve 2 along the radial direction of the nail sleeve 2, the straight hole 7 is positioned between the two fixing holes 8, the hole core line of the straight hole 7 is coaxial with the hole core line of the two fixing holes 8, and the two fixing holes 8 are communicated through the straight hole 7; the spine fixing nail further comprises a second locating pin 9, two ends of the second locating pin 9 are respectively inserted into the two fixing holes 8 and are respectively connected with the two fixing holes 8 in a welding mode, and part of the second locating pin 9 located between the two ends of the second locating pin 9 is contained in the straight hole 7 and is in contact with or interference fit with the wall of the straight hole 7.
Preferably, two ends of the second positioning pin 9 are respectively accommodated in the two fixing holes 8, and along the radial direction of the nail rod 1, the two ends of the second positioning pin 9 do not protrude out of the nail sleeve 2; the two ends of the second locating pin 9 are respectively connected with the two fixing holes 8 by spot welding. In the present embodiment, along the radial direction of the pin 1, the pin 1 is limited by the wall of the first blind hole 3 and cannot move relative to the pin sleeve 2; along the axial direction of the nail rod 1, the nail rod 1 is limited by the radial direction of the second positioning pin 9 and cannot move relative to the nail sleeve 2; along the circumferential direction of the nail rod 1, the nail rod 1 is limited by the radial direction of the second positioning pin 9 and cannot rotate relative to the nail sleeve 2; in summary, in this embodiment, the second positioning pin 9 is disposed between the pin 1 and the sleeve 2, so that the pin 1 and the sleeve 2 are relatively fixed, which is another connection method between the pin 1 and the sleeve 2.
In other alternative embodiments, the outer surface of the nail sleeve 2 forms a double thread structure, and the shape and arrangement manner of the double thread structure are both the prior art, for example, the double thread structure disclosed in patent document CN202221419761.7, and two threads forming the double thread are respectively defined as a first thread and a second thread, and the first thread and the second thread are arranged in parallel with each other.
Preferably, both fixing holes 8 are arranged at positions on the nail sleeve 2 where no screw thread is arranged, so as to avoid the occurrence of screw thread damage caused by the arrangement of the fixing holes 8.
Example 3
This embodiment 3 proposes a spinal fixation device comprising the spinal fixation pins of embodiment 1 and/or embodiment 2.
Further, referring to FIG. 9, in this embodiment, the number of spinal fixation pins is at least two; the spinal fixation device further includes a rod 17, at least one end of the rod 17 being removably connected to one of the spinal fixation nails.
The rod body 17 may be a cylindrical structure, or may be a growth rod structure disclosed in patent document CN202020703793.4, which is not limited herein; the detachable connection of at least one end of the rod 17 to one of the spinal fixation pins is known in the art and is disclosed in CN 201910396271.6.
When the spine fixing nail is used, the nail sleeve 2 of the spine fixing nail is screwed into the reserved hole in the spine of a patient, one end of the rod body 17 is arranged in the preset interval of the spine fixing nail, the rod body 17 is tightly pressed through the locking part 11, so that friction force between the locking part 11 and the rod body 17 is used for positioning the rod body 17.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (9)
1. A spine fixation nail comprises a nail rod (1) made of carbon fiber materials, and is characterized in that,
the novel nail sleeve comprises a nail sleeve (2) made of a titanium alloy material, wherein the nail sleeve (2) is provided with a first blind hole (3) along the axial direction, and the outer surface of the nail sleeve (2) is provided with threads; the nail rod (1) stretches into the first blind hole (3) and is connected with the nail sleeve (2).
2. The spinal staple of claim 1 wherein the staple is a staple,
the nail rod (1) is provided with a second blind hole (4), and the second blind hole (4) extends along the radial direction of the nail rod (1);
the nail sleeve (2) is provided with a pin hole (5), the pin hole (5) penetrates through the side wall of the nail sleeve (2) along the radial direction of the nail sleeve (2), the hole core line of the pin hole (5) is coaxial with the hole core line of the second blind hole (4), and the pin hole (5) is communicated with the second blind hole (4);
the novel pin hole positioning device comprises a pin body and is characterized by further comprising a first positioning pin (6), wherein two ends of the first positioning pin (6) are respectively defined as a first end and a second end, the first end is inserted into the second blind hole (4) and is in contact or interference connection with the hole wall of the second blind hole (4), and the second end is inserted into the pin hole (5) and is connected with the hole wall of the pin hole (5) through welding.
3. The spinal staple according to claim 2, characterized in that the number of pin holes (5), the number of first locating pins (6) and the number of second blind holes (4) are each configured as a first predetermined number, the hole axis of any one pin hole (5) being coaxial with the hole axis of one of the second blind holes (4); any pin hole (5) and a second blind hole (4) coaxial with the pin hole (5) jointly accommodate one of the first positioning pins (6).
4. A spinal staple according to claim 3, wherein the first predetermined number is an integer of 2 or more, the first predetermined number of pin holes (5) being arranged at intervals along the circumferential direction of the sleeve (2), and the first predetermined number of second blind holes (4) being arranged at intervals along the circumferential direction of the shank (1);
or the first preset number is an integer greater than or equal to 2, the first preset number of pin holes (5) are arranged at intervals along the axial direction of the pin sleeve (2), and the first preset number of second blind holes (4) are arranged at intervals along the axial direction of the pin rod (1);
or the first preset number is even, the first preset number of pin holes (5) are symmetrically arranged relative to the axis of the nail sleeve (2), and the first preset number of second blind holes (4) are symmetrically arranged relative to the axis of the nail rod (1).
5. The spinal staple of claim 4 wherein the first predetermined number is 4.
6. The spinal staple of claim 1 wherein the staple is a staple,
the nail rod (1) is provided with a straight hole (7) which is radially communicated;
the nail sleeve (2) is provided with two fixing holes (8) which are coaxially arranged, any one fixing hole (8) is penetrated through the side wall of the nail sleeve (2) along the radial direction of the nail sleeve (2), a straight hole (7) is positioned between the two fixing holes (8), the hole core line of the straight hole (7) is coaxial with the hole core line of the two fixing holes (8), and the two fixing holes (8) are communicated through the straight hole (7);
the spine fixing nail further comprises a second locating pin (9), two ends of the second locating pin (9) are respectively inserted into the two fixing holes (8) and are respectively connected with the two fixing holes (8) in a welding mode, and part of the second locating pin (9) between the two ends of the second locating pin (9) is contained in the straight hole (7) and is in contact or interference fit with the hole wall of the straight hole (7).
7. The spinal staple of any one of claims 1-6, further comprising a screw seat (10), a locking member (11), a locking ring (12);
the screw seat (10) is provided with a U-shaped groove (13), the U-shaped groove (13) is formed by recessing the top of the screw seat (10) towards the bottom of the screw seat (10), the bottom of the screw seat (10) is provided with a through hole (15) extending along the axial direction of the screw seat (10), and the through hole (15) is intersected with the groove wall of the U-shaped groove (13) to form an opening (16); one end of the nail rod (1) is provided with a nail head (14), the cross section diameter of the nail head (14) is larger than that of the nail rod (1), one end of the nail rod (1) deviating from the nail head (14) extends out of the through hole (15) through the opening (16), and the nail head (14) is limited in the U-shaped groove (13);
the locking ring (12) is arranged in the U-shaped groove (13), and the lower surface of the locking ring (12) is in partial contact or full contact with the upper surface of the nail head (14);
the screw seat (10) is in threaded connection with the locking component (11), and a preset interval is formed between the lower surface of the locking component (11) and the upper surface of the locking ring (12).
8. A spinal fixation device comprising the spinal fixation pin of any one of claims 1-7.
9. The spinal fixation device of claim 8 wherein the number of spinal fixation pins is at least two;
the spinal fixation device further comprises a rod body (17), at least one end of the rod body (17) being detachably connected to one of the spinal fixation nails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223001261.4U CN219207246U (en) | 2022-11-11 | 2022-11-11 | Spinal fixation pin and spinal fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223001261.4U CN219207246U (en) | 2022-11-11 | 2022-11-11 | Spinal fixation pin and spinal fixation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219207246U true CN219207246U (en) | 2023-06-20 |
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ID=86740345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223001261.4U Active CN219207246U (en) | 2022-11-11 | 2022-11-11 | Spinal fixation pin and spinal fixation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219207246U (en) |
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2022
- 2022-11-11 CN CN202223001261.4U patent/CN219207246U/en active Active
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