CN213641130U - Upper and lower ulnar joint reduction fixator - Google Patents
Upper and lower ulnar joint reduction fixator Download PDFInfo
- Publication number
- CN213641130U CN213641130U CN202022276121.2U CN202022276121U CN213641130U CN 213641130 U CN213641130 U CN 213641130U CN 202022276121 U CN202022276121 U CN 202022276121U CN 213641130 U CN213641130 U CN 213641130U
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- arc plate
- counter bore
- holes
- ulnar
- pair
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- 230000009467 reduction Effects 0.000 title claims abstract description 27
- 239000004743 Polypropylene Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 210000000623 ulna Anatomy 0.000 abstract description 24
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 206010023204 Joint dislocation Diseases 0.000 abstract description 4
- 230000000399 orthopedic effect Effects 0.000 abstract description 4
- 230000002980 postoperative effect Effects 0.000 abstract description 3
- 210000003041 ligament Anatomy 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 210000000245 forearm Anatomy 0.000 description 2
- 241000131317 Capitulum Species 0.000 description 1
- 206010070245 Foreign body Diseases 0.000 description 1
- 208000005422 Foreign-Body reaction Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 210000002758 humerus Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
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Abstract
The upper and lower ulnar joint reduction fixator comprises an arc plate, a tension screw and a flexible porous sheet, wherein a conical counter bore is formed in the arc plate, the conical counter bore is gradually reduced from a concave surface to a convex surface of the arc plate, the tension screw penetrates through the counter bore in the arc plate, a screw cap of the tension screw falls into the counter bore, a pair of through holes are formed in each of two sides of the arc plate, each pair of through holes are arranged up and down, an annular belt loop is fixed between each pair of through holes, and two ends of the flexible porous sheet are fixed on the annular belt loops on two sides of the arc plate respectively. The reduction fixator can be simultaneously applied to the slippage reduction fixation operation of the upper ulnar joint and the lower ulnar joint, and the application scene is wider; the reduction fixator can meet the postoperative fixation of upper and lower ulnar joint dislocation, prevent the head of radius and the lower end of ulna from being dislocated, and retain the rotating function of the upper and lower ulnar joints, thus being beneficial to the later-period rehabilitation exercise; the reduction fixator has simple structure, and is beneficial to wide popularization and application in orthopedic clinical operations.
Description
Technical Field
The utility model relates to the field of orthopedic medical equipment, in particular to an upper and lower ulnar joint reduction fixator.
Background
Ulna: the ulna is positioned on the inner side of the forearm, is divided into two integrated ends, is provided with a semilunar depression at the upper end, is called a pulley incisura, is articulated with a humerus pulley, is provided with a radial incisura at the outer side of the ulna, is articulated with a head of the radius, and is provided with a semicircular joint surface at the lower end of the ulna, and is articulated with a ulnar incisura of the radius. Radius: the upper end top is provided with a radial joint concavity and a humeral capitulum joint; the annular joint surface of the ulna joint is jointed with the radial incisure of the ulna, the inner side of the lower end of the radius is provided with an ulnar incisure, and the radial incisure is jointed with the annular joint surface of the radius head of the ulna. The ulna radial incisional track and the head of the radius form an upper ulnar joint, the ulna incisional track and the lower end of the ulna form a lower ulnar joint, the upper and lower ulnar joints are surrounded by annular ligaments, and the annular ligaments are easy to tear or even break under the action of external force, so that the slippage of the radius of the upper ulnar joint and the slippage of the ulna of the lower ulnar joint are caused.
The main treatment method of ulnar joint slippage is surgical reduction, the ulnar joint slippage needs to be fixed after reduction, the existing pure suture fixing method can be loosened and fallen, and ligament suture or ligament reconstruction can not realize complete reduction due to insufficient soft tissue tension; although subluxation can be prevented by fixing the kirschner wire which traverses the ulna and the radius, the reduction and fixation of the kirschner wire often limits the rotation function of the ulnar joint and is unfavorable for subsequent rehabilitation actions, and long-term functional limitation can cause abnormal bony connection or fusion of the ulnar joint and further cause serious complications that the rotation function of the forearm is completely lost.
SUMMERY OF THE UTILITY MODEL
The utility model designs the upper and lower ulnar joint reposition fixator for overcoming the defects of the prior art, the reposition fixator can be simultaneously applied to the slippage reposition and fixation operation of the upper and lower ulnar joints, and the application scene is wider; the reduction fixator can meet the postoperative fixation of upper and lower ulnar joint dislocation, prevent the head of radius and the lower end of ulna from being dislocated, and retain the rotating function of the upper and lower ulnar joints, thus being beneficial to the later-period rehabilitation exercise; the reduction fixator has simple structure, and is beneficial to wide popularization and application in orthopedic clinical operations.
In order to achieve the technical purpose, the utility model discloses a following technical scheme realizes:
the upper and lower ulnar joint reduction fixator comprises an arc plate, a tension screw and a flexible porous sheet, wherein a conical counter bore is formed in the arc plate, the conical counter bore is gradually reduced from a concave surface to a convex surface of the arc plate, the tension screw penetrates through the counter bore in the arc plate, a screw cap of the tension screw falls into the counter bore, a pair of through holes are formed in each of two sides of the arc plate, each pair of through holes are arranged up and down, an annular belt loop is fixed between each pair of through holes, and two ends of the flexible porous sheet are fixed on the annular belt loops on two sides of the arc plate respectively.
Furthermore, the arc-shaped plate is made of titanium alloy, the annular belt loop is made of medical nylon suture lines, and the flexible porous sheet is a full-micropore patch woven by polypropylene fibers.
The utility model has the advantages that: the reduction fixator can be simultaneously applied to the slippage reduction fixation operation of the upper ulnar joint and the lower ulnar joint, and the application scene is wider; the reduction fixator can meet the postoperative fixation of upper and lower ulnar joint dislocation, prevent the head of radius and the lower end of ulna from being dislocated, and retain the rotating function of the upper and lower ulnar joints, thus being beneficial to the later-period rehabilitation exercise; the reduction fixator has simple structure, and is beneficial to wide popularization and application in orthopedic clinical operations.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and 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 these drawings without creative efforts.
FIG. 1 is a schematic view showing the overall structure of the ulnar joint reduction fixator;
FIG. 2 is a schematic view of the disassembled structure of the arc-shaped plate and the tension screw;
FIG. 3 is a schematic view showing the use of the ulnar reduction fixator for ulnar and ulnar reduction;
fig. 4 is a schematic view showing the use state of the ulnar joint reduction fixator for reduction and fixation of the ulnar joint.
In the drawings, the components represented by the respective reference numerals are listed below:
1-arc plate, 2-lag screw, 3-flexible porous sheet, 4-annular belt loop, 5-ulna, 6-radius, 7-radius ulna notch, 8-ulna radius notch, 11-conical counter bore and 12-perforation.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in figures 1-2, the reduction fixator for the upper and lower ulnar joints comprises an arc-shaped plate 1, a tension screw 2 and a flexible porous sheet 3, wherein the arc-shaped plate 1 is made of titanium alloy. The flexible porous sheet 3 is a full-micropore patch woven by polypropylene fibers, a polypropylene mesh sheet is softer, is more resistant to bending and folding, can be cut according to the required size, has more obvious effect of stimulating the proliferation of fibrous tissues, has mesh apertures favorable for the growth and the penetration of the fibrous tissues, is easy to be infiltrated by connective tissues, can be embedded with the tissues at early stage, has slight foreign body reaction, does not have obvious foreign bodies and discomfort for patients, and has the advantages of low recurrence rate, low complication incidence rate and the like. The arc plate 1 is provided with a conical counter bore 11, the conical counter bore 11 is gradually reduced from the concave surface to the convex surface of the arc plate 1, the tension screw 2 penetrates through the counter bore 11 on the arc plate, the screw cap of the tension screw 2 falls into the counter bore, two sides of the arc plate 1 are respectively provided with a pair of through holes 12, each pair of through holes 12 are arranged up and down, an annular belt loop 4 is fixed between each pair of through holes, the annular belt loop 4 is made of medical nylon suture, and two ends of the flexible porous sheet 3 are respectively fixed on the annular belt loops 4 on two sides of the arc plate 1.
As shown in fig. 3, the convex surface of the arc plate 1 is attached to the concave surface of the radius ruler notch 7, then holes are drilled on two sides of the radius ruler notch, after the holes are drilled, the flexible porous sheet 3 is sleeved from the lower end of the ulna, the tension screw 2 is screwed into the threaded hole of the radius through the counter bore 11 of the arc plate 1 until the screw cap of the tension screw 2 completely falls into the counter bore 11, in the process of screwing the tension screw 2, the lower end of the ulna is pulled and reset by the flexible porous sheet 3, the constraint of the flexible porous sheet 3 on the lower end of the ulna is equivalent to the constraint of an annular ligament on the lower end of the ulna, the ulna can be reset and fixed, and the rotating function of the lower end of the ulna.
As shown in fig. 4, the convex surface of the arc plate 1 is attached to the concave surface of the ulna radial notch 8, then holes are drilled on two sides of the ulna radial notch, then the flexible porous sheet 3 is sleeved on the upper side of the radius head of the radius 6, the lag screw 2 is screwed in until the nail cap falls into the counter bore 11, the radius head is pulled and reset by the flexible porous sheet 3, the radius head is fixed between the flexible porous sheet 3 and the arc plate 1, and the corresponding rotation function is reserved.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (2)
1. The upper and lower ulnar joint reduction fixator is characterized by comprising an arc plate, a tension screw and a flexible porous sheet, wherein a conical counter bore is formed in the arc plate, the conical counter bore is gradually reduced from a concave surface to a convex surface of the arc plate, the tension screw penetrates through the counter bore in the arc plate, a screw cap of the tension screw falls into the counter bore, a pair of through holes are formed in each of two sides of the arc plate, each pair of through holes are arranged up and down, an annular belt loop is fixed between each pair of through holes, and two ends of the flexible porous sheet are fixed on the annular belt loops on two sides of the arc plate respectively.
2. The ulnar and ulnar joint reduction fixator of claim 1 wherein the curved plate is made of titanium alloy, the loop is made of medical nylon suture, and the flexible porous sheet is a full microporous patch woven from polypropylene fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022276121.2U CN213641130U (en) | 2020-10-13 | 2020-10-13 | Upper and lower ulnar joint reduction fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022276121.2U CN213641130U (en) | 2020-10-13 | 2020-10-13 | Upper and lower ulnar joint reduction fixator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213641130U true CN213641130U (en) | 2021-07-09 |
Family
ID=76701424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022276121.2U Expired - Fee Related CN213641130U (en) | 2020-10-13 | 2020-10-13 | Upper and lower ulnar joint reduction fixator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213641130U (en) |
-
2020
- 2020-10-13 CN CN202022276121.2U patent/CN213641130U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210709 |