CN218279776U - Anti-drop countersunk screw for medical treatment - Google Patents
Anti-drop countersunk screw for medical treatment Download PDFInfo
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- CN218279776U CN218279776U CN202221568702.6U CN202221568702U CN218279776U CN 218279776 U CN218279776 U CN 218279776U CN 202221568702 U CN202221568702 U CN 202221568702U CN 218279776 U CN218279776 U CN 218279776U
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Abstract
The utility model discloses an anti-drop countersunk head screw for medical treatment, belonging to the technical field of medical prosthesis; the nail comprises a nail rod and a nail head connected to the top end of the nail rod, wherein the nail rod comprises a smooth cylindrical upper section and a threaded lower section which are connected, and the nail head is connected to the top of the smooth cylindrical upper section; the nail head comprises a transition connecting section and a locking section, wherein the external thread is arranged on the side wall of the locking section, and the two ends of the transition connecting section are respectively connected with the locking section and the upper section of the smooth round rod. The utility model discloses be difficult to not hard up after connecting, the steadiness is good.
Description
Technical Field
The utility model relates to medical false body technical field, in particular to an anticreep countersunk head screw of medical treatment usefulness.
Background
In the medical process, the fixed connection between the prosthesis and the bone or between the prosthesis and the bone is generally realized by locking screws; however, after the fixation is carried out by common screws in the prior art, the problem of screw looseness often occurs because the human body moves frequently; the loosening of the screw in the human body can cause serious consequences to the rehabilitation and treatment of patients, and lead to the lengthening of the recovery period and even the deformity recovery.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an anticreep countersunk screw for medical treatment. The screw is difficult to fall off and has good stability.
In order to realize the purpose, the utility model discloses the technical scheme who takes does:
an anti-drop countersunk head screw for medical use comprises a screw rod and a screw head connected to the top end of the screw rod, wherein the screw rod comprises a smooth cylindrical upper section and a threaded lower section which are connected, and the screw head is connected to the top of the smooth cylindrical upper section; the nail head comprises a transition connecting section and a locking section, wherein the external thread is arranged on the side wall of the locking section, and the two ends of the transition connecting section are respectively connected with the locking section and the upper section of the smooth round rod.
Further, the diameter of the head is larger than the diameter of the shank.
Furthermore, an inner hexagonal hole for screwing is formed in the upper surface of the nail head.
Furthermore, the thread pitch of the external thread of the side wall of the locking section is different from the thread pitch of the lower section of the thread.
The utility model adopts the beneficial effects of the above technical scheme to produce lie in:
the utility model discloses can be simultaneously threaded connection need be connected between the false body and the false body or false body and skeleton, the steadiness is better, the effectual screw that prevents drops.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic top view of the nail head according to the embodiment of the present invention.
Fig. 3 is a diagram of the application structure of fig. 1.
In the figure, 1: a threaded section; 2: a smooth cylindrical section; 3: transition connecting section, 4: locking section, 5, interior hexagonal hole, 6, first prosthesis, 7, second prosthesis, 8, countersunk screw.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
An anti-drop countersunk head screw for medical use comprises a screw rod and a screw head connected to the top end of the screw rod, wherein the screw rod comprises a smooth cylindrical upper section and a threaded lower section which are connected, and the screw head is connected to the top of the smooth cylindrical upper section; the nail head comprises a transition connecting section and a locking section, wherein the external thread is arranged on the side wall of the locking section, and the two ends of the transition connecting section are respectively connected with the locking section and the upper section of the smooth round rod.
Further, the diameter of the head is larger than the diameter of the shank.
Furthermore, an inner hexagonal hole for screwing is formed in the upper surface of the nail head.
Furthermore, the thread pitch of the external thread on the side wall of the locking section is different from that of the lower section of the thread.
The following is a more specific example:
referring to fig. 1 and 2, the connection between two prostheses is applied in this embodiment, the application scenario being shown in fig. 3, in particular two prostheses with a spacing. Wherein, the first prosthesis is provided with a step-shaped counter bore, and the inner wall of the outer side hole of the counter bore is provided with an internal thread; the connecting hole on the second prosthesis is also provided with internal threads; the connecting hole is opposite to the counter bore and is connected through the countersunk head screw disclosed by the utility model; wherein the smooth cylindrical upper section and the threaded lower section of the nail rod; the lower section of the thread extends into the connecting hole and is in threaded connection with the internal thread of the connecting hole. The nail head transition connecting section and the locking section are arranged on the outer wall of the locking section; the external thread of the locking section is in threaded fit with the internal thread on the inner wall of the counter bore. In this embodiment, the length of the countersunk head screw is 30mm, and the thread pitch of the external thread on the side wall of the locking section is greater than that of the lower section of the thread.
Claims (3)
1. An anti-drop countersunk head screw for medical use comprises a screw rod and a screw head connected to the top end of the screw rod, and is characterized in that the screw rod comprises a smooth cylindrical upper section and a thread lower section which are connected, and the screw head is connected to the top of the smooth cylindrical upper section; the nail head comprises a transition connecting section and a locking section, wherein the side wall of the locking section is provided with external threads, and two ends of the transition connecting section are respectively connected with the locking section and the upper section of the smooth round rod; the thread pitch of the external thread on the side wall of the locking section is different from that of the lower section of the thread.
2. The medical anti-run-off countersunk screw as claimed in claim 1, wherein the diameter of the head is greater than the diameter of the shank.
3. The medical anti-drop countersunk head screw according to claim 1, wherein the upper surface of the head is provided with an internal hexagonal hole for screwing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221568702.6U CN218279776U (en) | 2022-06-22 | 2022-06-22 | Anti-drop countersunk screw for medical treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221568702.6U CN218279776U (en) | 2022-06-22 | 2022-06-22 | Anti-drop countersunk screw for medical treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218279776U true CN218279776U (en) | 2023-01-13 |
Family
ID=84788719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221568702.6U Active CN218279776U (en) | 2022-06-22 | 2022-06-22 | Anti-drop countersunk screw for medical treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218279776U (en) |
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2022
- 2022-06-22 CN CN202221568702.6U patent/CN218279776U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |