CN213098241U - Supracondylar fracture of humerus coaptation board - Google Patents
Supracondylar fracture of humerus coaptation board Download PDFInfo
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- CN213098241U CN213098241U CN202020927198.9U CN202020927198U CN213098241U CN 213098241 U CN213098241 U CN 213098241U CN 202020927198 U CN202020927198 U CN 202020927198U CN 213098241 U CN213098241 U CN 213098241U
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Abstract
The utility model provides an supracondylar fracture of humerus bone fracture plate, which comprises a cadre and a head; the cadre is straight, the top end is integrally connected with a probe for the front side access of the humeral condyle, and the inner side adopts an arc-shaped surface which can be attached to the surface of the humeral shaft; the head part is integrally arranged at the bottom end of the dry part, the thickness of the head part is smaller than that of the dry part, and the width of a connecting part of the head part and the dry part is smaller than that of the dry part; the inner side of the head adopts an arc surface which can be attached to the surface of the humeral condyle. The dry part is inserted and arranged on the front bone surface of the humeral shaft through the probe, and the head is adjusted to be arranged on the front bone surface of the humeral condyle, so that the fixation of the bone on the humeral condyle is realized; in addition, when the head part is twisted, the width and the thickness of the joint of the dry part and the head part are smaller than those of the dry part, so that the part is not damaged due to stress deformation, and the stability of the device in use is improved.
Description
Technical Field
The utility model belongs to the field of medical equipment, more specifically say, relate to an supracondylar fracture of humerus coaptation board.
Background
At present, the product to supracondylar fracture of humerus on the market is mostly the inside and outside board of traditional straight type board cooperation humerus distal end, and this kind of product adopts the dorsal part way of going into of humerus distal end (the "distal end" here means humeral condyle department), has following not enough:
1. the angular stability of the straight plate and the inner and outer side plates at the far end of the humerus is poor;
2. the wound of the patient is large, and the postoperative healing is slow;
3. the joint capsule is damaged, and the postoperative recovery of the elbow joint is influenced;
4. the dorsal nervous system is complex, and the trunk of the bone plate easily stresses nerves.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an supracondylar fracture of humerus coaptation board aims at solving the straight template cooperation outside plate dorsal part approach that exists among the prior art and carries out the problem that supracondylar fracture of humerus operation caused.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an supracondylar fracture of humerus coaptation board for supracondylar fracture of humerus front side approach operation, including being used for the cadre of laminating with the front side bone face of humeral shaft to and be used for the head of laminating with the front side bone face of humeral condyle, its characterized in that: the cadre part is straight, and the top end of the cadre part is integrally connected with a probe which is used for being inserted into the blunt separation muscle and periosteum on the humeral condyle; the head part is integrally connected to the bottom end of the dry part, the thickness of the head part is smaller than that of the dry part, twisted grooves which are sunken along the width direction are arranged on two sides of the connection part of the head part and the dry part, and the connection part of the dry part and the head part is in smooth transition;
the cadre and the head are both made of titanium alloy materials, a plurality of positioning holes for installing bone screws are arranged at intervals on the cadre, and a plurality of locking holes for being in threaded connection with the bone screws are arranged at intervals on the head.
As another embodiment of this application, the cadre be used for with be equipped with two sets of dashpots on the binding face of the front side bone face laminating of humeral shaft, it is two sets of the dashpot is located respectively binding face's both sides border position department, just the notch orientation of dashpot binding face's side line, every group the dashpot is followed cadre's longitudinal separation is equipped with a plurality ofly.
As another embodiment of the present application, the buffer slot is located between two adjacent positioning holes.
As another embodiment of the present application, each of the positioning holes includes a locking hole penetrating the stem portion and for screw-coupling with the bone screw, and a coupling hole penetrating the stem portion and for locking the bone screw;
wherein the bone screw is secured to the stem while the bone screw is threadedly coupled with the locking hole; when the bone screw is locked in the combination hole, the end part of the bone screw is abutted against the inner wall of the combination hole.
As another embodiment of the present application, the locking holes are all communicated with the coupling hole.
As another embodiment of the present application, an extension hole is communicated with the combining hole at the bottom end of the stem portion, the extension hole is used for locking with the bone screw, and the bone screw can move along the longitudinal direction of the stem portion when the bone screw is locked in the extension hole.
As another embodiment of the present application, the bottom end of the stem is provided with a locking hole for threaded connection with the bone screw.
As another embodiment of the present application, the thickness of the tip of the probe is less than the thickness of the shaft, and the surface portion of the probe between the tip of the probe and the shaft is smoothly transitioned.
As another embodiment of the present application, the tip width of the probe is less than the width of the shaft; and a smooth transition from the tip of the probe to the two side portions of the probe between the shaft.
The utility model provides an supracondylar fracture of humerus coaptation board's beneficial effect lies in: the cadre is attached to the front side bone surface of the humeral shaft through the probe, and is fixed on the front side bone surface of the humeral shaft through the connection of the bone screw and the positioning hole; the head is jointed with the front bone surface of the humeral condyle by twisting the head, and the head is fixed on the front bone surface of the humeral condyle by connecting the bone screws with the locking holes; the cadre and the head are positioned and fixed, thereby ensuring the fixation of the upper bone of the humeral condyle and achieving the effect of the anterior approach operation of the supracondylar fracture of the humeral. And because the thickness of the head part is smaller than that of the cadre part, and the two sides of the joint of the head part and the cadre part are both provided with the twisting grooves, the stress generated by twisting the head part is mainly concentrated on the part between the two twisting grooves, and the width and the thickness of the part are smaller than that of the cadre part, so that the influence caused by stress concentration is smaller, and the damage of the cadre part caused by stress concentration at the head part and the cadre part when the head part is twisted is avoided. Compared with the prior art, the utility model provides an supracondylar fracture of humerus coaptation board can realize the fixed of skeleton on the humerus condyle to can avoid the position of being connected between cadre and the head to take place stress concentration and damaged, guaranteed the stability when device uses.
Drawings
Fig. 1 is a schematic structural view of an supracondylar fracture humerus plate according to an embodiment of the present invention;
fig. 2 is a second schematic structural view of the supracondylar fracture of humerus bone plate according to the embodiment of the present invention.
In the figure, 1, cadre; 11. a probe; 12. positioning holes; 121. a locking hole; 122. a coupling hole; 123. an extension hole; 13. a buffer tank; 14. a locking hole; 2. a head portion; 21. a locking hole; 3. the groove is twisted.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that, in general, the supracondylar fracture of the humerus is on the humeral shaft, i.e., on the shaft of the humeral condyle. Therefore, to achieve the "coaptation" goal, the humeral shaft needs to be fixed.
Referring to fig. 1 and 2 together, the supracondylar fracture of humerus bone plate provided by the present invention will now be described. The supracondylar fracture of humerus coaptation board is used for the anterior approach operation of the supracondylar fracture of humerus, and comprises a cadre 1 which is used for being jointed with the anterior bone surface of a humeral shaft and a head 2 which is used for being jointed with the anterior bone surface of the humeral condyle.
The cadre 1 is straight, the top end of the cadre 1 is integrally connected with a probe 11 for inserting blunt separating muscle and periosteum on the humeral condyle, that is, when the cadre 1 is connected to a human body, the probe 11 at the top end of the cadre 1 firstly enters the way along the front side of the supracondylar fracture of the humeral condyle, and the way of entering the way belongs to the prior art, and is not described herein again. The inner side surface of the cadre part 1 adopts an arc-shaped structure which can be matched and attached to the front bone surface of the humeral shaft, and the shape of the arc-shaped surface is matched with the front bone surface of the humeral shaft. In this embodiment, the concepts of "upper" and "lower" are the same as the concepts of "distal" and "proximal" of the humerus of the human body, and after the stem portion 1 is inserted into the human body, the tip end of the stem portion 1 (or referred to as the upper end of the stem portion 1) is attached to the proximal end of the humerus of the human body.
Wherein, the dry part 1 and the head part 2 are made of titanium alloy materials. The surface of the trunk part 1 is provided with a plurality of positioning holes 12 at intervals for installing bone screws, and the surface of the head part 2 is provided with a plurality of locking holes 21 at intervals for being in threaded connection with the bone screws.
In use, the probe 11 of the stem 1 is inserted into the humeral condyle along the distal humeral cut, and the stem 1 and head 2 are gradually advanced inwardly and blunt dissected from the soft tissue. After the stem 1 and the head 2 are both advanced over the humeral condyle, the position of the head 2 is adjusted slightly so that the head 2 and the patient's humeral condyle can fit together. Finally, the bone screws are mounted in the positioning holes 12 and the locking holes 21, respectively, completing the fixation of the stem 1 and the head 2 on the humeral condyle.
Compared with the prior art, the utility model provides an supracondylar fracture of humerus coaptation board is gone into the way by human front side, avoids causing the interference to the nerve of humerus rear side. By reducing the width of the junction of the stem 1 and the head 2, and the thickness of the head 2, irritation reactions of the soft tissue on the humeral condyle can be reduced, while the stress of the bone plate can be dispersed; because the connecting part of the head part 2 and the cadre part 1 is narrower, the head part 2 is more convenient to bend laterally, and the bone fracture plate can be conveniently attached to the humerus bone surfaces of different people.
Because cadre 1 is connected with cracked humerus shaft, when the patient moves carelessly and leads to humerus shaft torsional movement, cracked humerus shaft trunk department can produce the trend of dislocation, this trend will be used in the form of stress on the plate body of cadre 1, in order to avoid cadre 1 stress deformation to cause internal damage or even fracture, please refer to in the lump and refer to fig. 1 and fig. 2, as the utility model provides a concrete implementation mode of supracondylar fracture of humerus coaptation board, cadre 1 be used for with the binding face of the front side bone face laminating of humerus shaft on be equipped with two sets of dashpots 13, two sets of dashpots 13 are located the both sides edge position department of binding face respectively, and the notch of dashpot 13 is towards the side line of binding face, every set of dashpots 13 is equipped with a plurality of dashpots along cadre 1' s
Through adopting above-mentioned technical scheme, when the trend of cadre 1 inside production stress deformation, because the interval is less between the cell wall of buffer slot 13 and cadre 1's outer wall, stress deformation's position mainly concentrates on buffer slot 13 department, has avoided thick cadre 1 plate body stress deformation to lead to the inside to damage the cracked condition of plate body even.
If the buffer groove 13 is twisted (stress deformation), the positioning hole 12 is easily deformed, and the bone screw is separated from the positioning hole 12 because the positioning hole 12 is connected with the bone screw; in order to avoid the above situation, please refer to fig. 1 and fig. 2 together, as an embodiment of the supracondylar fracture of humerus bone plate of the present invention, the buffer slot 13 is located between two adjacent positioning holes 12.
Through adopting above-mentioned technical scheme, buffer slot 13 department takes place to twist and warp, and the cadre 1 of buffer slot 13 place horizontal plane takes place to twist, and this twist does not make locating hole 12 receive the influence, and then has avoided the fixed condition that breaks away from locating hole 12.
Referring to fig. 1 and 2 together, as an embodiment of the supracondylar fracture of humerus bone plate provided by the present invention, each positioning hole 12 includes a locking hole 121 penetrating the surface of the stem 1 and used for screw-connecting with a bone screw, and a combining hole 122 penetrating the surface of the stem 1 and used for locking the bone screw; wherein, the inner wall of the combining hole 122 is opened along the direction of the inner part of the dry part 1 to the outer part, when the bone screw is locked in the combining hole 122, the inner wall of the combining hole 122 is used for abutting against the end part of the bone screw.
By adopting the technical scheme, each positioning hole 12 has two modes of connection with a bone screw, one mode is that the positioning hole is in threaded connection with the bone screw through the locking hole 121, so that the connection of the bone screw is firmer; the other is connected with bone screws through the combining holes 122, so that the distance between the end parts of the bone screws passing through the combining holes 122 and the humeral shaft can be adjusted; these two cases need to be determined according to clinical diagnosis, and generally, bone screws around the fracture of the humeral shaft need to be connected to the coupling holes 122, and bone screws need to be connected to the positions far away from the fracture through the locking holes 121, so that the stem 1 can be more firmly attached to the humeral shaft.
Referring to fig. 1 and 2 together, as an embodiment of the supracondylar fracture of humerus bone plate provided by the present invention, the locking holes 121 are all communicated with the combining holes 122 along the width direction of the stem portion 1, and a plurality of sets of mutually communicated locking holes 121 and combining holes 122 are arranged along the longitudinal direction of the stem portion 1.
Through adopting above-mentioned technical scheme, the area that locating hole 12 was shared is littleer, during the preparation, can set up more locating holes 12 on cadre 1, has effectively strengthened the stability of device when using.
Because the sizes of the humeral condyles of all the people are different, if the convex part of the humeral condyles of the patients is large and blocks the positioning hole 12 at the lowest part of the trunk part 1, the bone screws cannot penetrate through the lower part of the trunk part 1 to be fixed; therefore, in order to solve the above problems, in order to make the supracondylar fracture of humerus bone plate provided by the present invention be applicable to various patients, please refer to fig. 1 and fig. 2 together, as a specific embodiment of the supracondylar fracture of humerus bone plate provided by the present invention, an extension hole 123 is communicated with the combining hole 122 at the bottom end of the cadre 1, the extension hole 123 is used for locking with a bone screw, and the inner wall distance of the extension hole 123 along the longitudinal direction of the cadre 1 is greater than the aperture of the combining hole 122, and the inner wall distance of the extension hole 123 along the width direction of the cadre 1 is the same as the aperture of the combining hole 122; that is, the bone screw is able to move longitudinally along the shaft 1 when the bone screw is locked within the elongate bore 123.
By adopting the technical scheme, when the humeral condyle bulge of a patient is large and blocks the positioning hole 12 at the lowest part of the cadre 1, the bone screw can be inserted into the extension hole 123 and move along the longitudinal direction of the cadre 1, so that the bottom end of the cadre 1 is fixed, the device can meet the requirements of different patients (patients with different sizes of the humeral condyle bulge) and has better universality.
Under normal conditions, the protruding portion of the humeral condyle will not affect the connection between the cadre 1 and the humeral shaft, so as to further enhance the connection relationship between the cadre 1 and the humeral shaft, please refer to fig. 1 and fig. 2 together, as a specific embodiment of the supracondylar fracture bone plate of the humeral provided by the present invention, the bottom end of the cadre 1 is provided with a locking hole 14 for being connected with a bone screw thread.
By adopting the technical scheme, the bone screw penetrates through the bottom end of the cadre part 1 and is connected with the thread in the locking hole 14, so that the connection strength of the cadre part 1 and the humeral shaft is enhanced.
Before the stem part 1 is implanted into a human body, an incision is needed on the outer side of the humerus of the human body, and then the stem part 1 is inserted into the incision through a probe 11 to separate soft tissues in a blunt way; in order to allow for easier insertion of the probe 11 into the knife edge. Referring to fig. 1 and 2 together, as an embodiment of the supracondylar fracture bone plate of humerus provided by the present invention, the thickness of the tip of the probe 11 is smaller than the thickness of the cadre 1, and the surface portion or both side surfaces of the probe 11 between the tip of the probe 11 and the cadre 1 smoothly transition, so that the probe 11 is in a bullet head shape.
By adopting the technical scheme, the probe 11 can be inserted into the blunt separated soft tissue along the incision, and the operation mode of the minimally invasive surgery is realized.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. Supracondylar fracture of humerus coaptation board for supracondylar fracture of humerus front side approach operation, including being used for with the cadre of the laminating of the front side bone face of humeral shaft to and be used for the head with the laminating of the front side bone face of humeral condyle, its characterized in that: the cadre part is straight, and the top end of the cadre part is integrally connected with a probe which is used for being inserted into the blunt separation muscle and periosteum on the humeral condyle; the head part is integrally connected to the bottom end of the dry part, the thickness of the head part is smaller than that of the dry part, twisted grooves which are sunken along the width direction are arranged on two sides of the connection part of the head part and the dry part, and the connection part of the dry part and the head part is in smooth transition;
the cadre and the head are both made of titanium alloy materials, a plurality of positioning holes for installing bone screws are arranged at intervals on the cadre, and a plurality of locking holes for being in threaded connection with the bone screws are arranged at intervals on the head.
2. The supracondylar fracture of humerus bone plate of claim 1, wherein two sets of buffer grooves are provided on the abutting surface of the stem portion for abutting against the anterior bone surface of the humeral stem, the two sets of buffer grooves are respectively located at two side edge positions of the abutting surface, the notches of the buffer grooves face the side edge lines of the abutting surface, and a plurality of the buffer grooves are provided at intervals along the longitudinal direction of the stem portion.
3. The supracondylar fracture of humerus bone plate of claim 2, wherein the relief notch is located between two adjacent ones of the alignment holes.
4. The supracondylar fracture of a humerus bone plate of claim 1, wherein each of the positioning holes includes a locking hole extending through the stem portion for threaded connection with the bone screw, and an engaging hole extending through the stem portion for locking of the bone screw;
wherein the bone screw is secured to the stem while the bone screw is threadedly coupled with the locking hole; when the bone screw is locked in the combination hole, the end part of the bone screw is abutted against the inner wall of the combination hole.
5. The supracondylar fracture of humerus bone plate of claim 4, wherein the locking holes are each in communication with the combination hole.
6. The supracondylar fracture of humerus bone plate of claim 4 or 5, characterized in that the coupling hole at the bottom end of the stem is connected with an extension hole, which is used for locking with the bone screw, and the bone screw can move along the longitudinal direction of the stem when the bone screw is locked in the extension hole.
7. The supracondylar fracture of humerus bone plate of claim 4, wherein the bottom end of the stem is provided with a locking hole for threaded connection with the bone screw.
8. The supracondylar fracture of humerus bone plate of claim 1, wherein the thickness of the tip of the probe is less than the thickness of the stem and the surface portion of the probe between the tip of the probe and the stem transitions smoothly.
9. The supracondylar fracture of humerus bone plate of claim 8, wherein the tip of the probe has a width that is less than the width of the stem; and a smooth transition from the tip of the probe to the two side portions of the probe between the shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020927198.9U CN213098241U (en) | 2020-05-27 | 2020-05-27 | Supracondylar fracture of humerus coaptation board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020927198.9U CN213098241U (en) | 2020-05-27 | 2020-05-27 | Supracondylar fracture of humerus coaptation board |
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| Publication Number | Publication Date |
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| CN213098241U true CN213098241U (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020927198.9U Active CN213098241U (en) | 2020-05-27 | 2020-05-27 | Supracondylar fracture of humerus coaptation board |
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| CN (1) | CN213098241U (en) |
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2020
- 2020-05-27 CN CN202020927198.9U patent/CN213098241U/en active Active
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