CN214857374U - Intramedullary nail taking-out device - Google Patents
Intramedullary nail taking-out device Download PDFInfo
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- CN214857374U CN214857374U CN202120769124.1U CN202120769124U CN214857374U CN 214857374 U CN214857374 U CN 214857374U CN 202120769124 U CN202120769124 U CN 202120769124U CN 214857374 U CN214857374 U CN 214857374U
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- intramedullary nail
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- extraction device
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Abstract
The utility model provides an intramedullary nail extracting device, relating to the technical field of medical instruments. The intramedullary nail taking-out device comprises a support frame, a connecting piece, a fixing piece and a power piece for driving the fixing piece to move; the power part is detachably arranged on the support frame; the power part is connected with the fixing part through the connecting part, so that the power part drives the fixing part to extract the intramedullary nail. Achieving the technical effect of conveniently taking out the intramedullary nail.
Description
Technical Field
The utility model relates to the technical field of medical equipment, particularly, relate to intramedullary nail extraction device.
Background
With the continuous development of the intramedullary nail internal fixation technology, the technology is widely applied to the medical field. The intramedullary fixation means a method of fixing a fractured or osteotomy end by placing an implant with good compatibility with a human body and a certain strength in a medullary cavity at the far end or the near end of a bone.
Intramedullary fixation has been used for many years in the treatment of internal fixation of fractures and deformity correction. Intramedullary fixation can be applied to transverse or mild oblique fracture and correction of limb deformity, and forms strong internal fixation of a fracture end or a osteotomy end in a three-point fixation mode, and patients can perform functional exercise at an early stage. Therefore, the technology is widely applied clinically.
Intramedullary nails are common internal fixation instruments for children orthopedics and can be used for children fracture, deformity correction and the like. Depending on the needs of the patient, the intramedullary nail may be removed after the fracture or osteotomy end has completely healed. A common intramedullary nail extracting device is provided with an intramedullary nail clamp and a T handle. However, in actual clinical work, there are often cases where intramedullary nail extraction is difficult or even impossible.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide an intramedullary nail extraction device that is easy to extract.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an intramedullary nail extraction device to alleviate the technical problem of the intramedullary nail difficult to extract among the prior art.
In a first aspect, an embodiment of the present invention provides an intramedullary nail extraction device, which includes a support frame, a connecting member, a fixing member for fixing the tail of an intramedullary nail, and a power member;
the power part is detachably arranged on the support frame;
the power part is connected with the fixing part through a connecting part, so that the power part drives the fixing part to extract the intramedullary nail.
With reference to the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the fixing member includes a pressing block, a pressing nut, a pressing threaded rod, and a fixing belt ring for being sleeved on the tail portion of the intramedullary nail;
the fixing strap is fixedly arranged at the end part of the pressurizing threaded rod, the pressurizing block is sleeved on the pressurizing threaded rod, the pressurizing nut is in threaded connection with the pressurizing threaded rod, and the pressurizing nut is abutted against the pressurizing block;
one end of the pressurizing threaded rod, which is far away from the fixed belt ring, is connected with the connecting piece.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the outer wall of the pressing block is provided with a groove adapted to an outer wall of the intramedullary nail.
With reference to the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the number of the fixing pieces is two.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the connecting member employs a connecting rod.
In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the power member employs a power threaded rod.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein one end of the power component is provided with an annular groove, and the connecting component is provided with an openable and closable snap ring adapted to the annular groove.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the power component is far away from the detachable end of the connecting rod is provided with a crank.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the supporting frame includes a bracket and an adjusting frame;
the support is U-shaped, and the number of the adjusting frames is two;
the support with the alignment jig rotatable coupling to the support with the junction between the alignment jig and the two is provided with the retaining member.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the adjusting bracket is kept away from one end of the bracket is provided with an arc-shaped pad adapted to an outer wall of a long bone of a patient.
Has the advantages that:
the embodiment of the utility model provides an intramedullary nail taking-out device, which comprises a support frame, a connecting piece, a fixing piece for fixing the tail part of the intramedullary nail and a power piece; the power part is detachably arranged on the support frame; the power part is connected with the fixing part through the connecting part, so that the power part drives the fixing part to extract the intramedullary nail.
When specifically using, medical staff sets up the fixed afterbody that exposes the intramedullary nail outside the long bone of patient with the mounting, then will link together power spare and mounting through the connecting piece, and at the connection in-process, set up the support frame outside patient's long bone, support power spare through the support frame, thereby make medical staff can drive power spare, thereby drive the intramedullary nail of mounting in with patient's long bone and take out, through such setting, make taking out the intramedullary nail that medical staff can be convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a partial structure of an intramedullary nail extraction device according to an embodiment of the present invention;
fig. 2 is a schematic view of an intramedullary nail extraction device according to an embodiment of the present invention in use.
Icon:
100-a support frame; 110-a scaffold; 120-an adjusting bracket; 130-a retaining member;
200-a connector;
300-a fixture; 310-pressing blocks; 320-a compression nut; 330-pressure threaded rod; 340-fixing the belt loop;
400-a power member;
500-intramedullary nail;
600-a crank;
700-Long bone.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1 and 2, an embodiment of the present invention provides an intramedullary nail extraction device, which includes a support frame 100, a connecting member 200, a fixing member 300 for fixing the tail of an intramedullary nail 500, and a power member 400 for driving the fixing member 300 to move by a user; the power piece 400 is detachably arranged on the support frame 100; the power element 400 is connected with the fixing element 300 through the connecting element 200, so that the power element 400 drives the fixing element 300 to extract the intramedullary nail 500.
When the intramedullary nail fixing device is used specifically, a medical worker fixes and sets the fixing member 300 at the tail part of the intramedullary nail 500 exposed out of the long bone 700 of a patient, then the power member 400 and the fixing member 300 are connected together through the connecting member 200, in the connecting process, the support frame 100 is arranged out of the long bone 700 of the patient, the power member 400 is supported through the support frame 100, so that the medical worker can drive the power member 400, the fixing member 300 is driven to extract the intramedullary nail 500 in the long bone 700 of the patient, and through the arrangement, the intramedullary nail 500 can be conveniently taken out by the medical worker.
Specifically, during the operation, the medical staff fixes the fixing member 300 on the outer wall of the intramedullary nail 500 exposed outside the long bone 700 on the long bone 700 of the patient, so that when the medical staff operates the power member 400, the power member 400 can drive the fixing member 300 away from the long bone 700 of the patient through the connecting member 200.
Referring to fig. 1 and 2, in an alternative embodiment, the fixing member 300 includes a pressing block 310, a pressing nut 320, a pressing threaded rod 330 and a fixing belt ring 340 for sleeving the tail of the intramedullary nail 500; the fixed belt ring 340 is fixedly arranged at the end part of the pressurizing threaded rod 330, the pressurizing block 310 is sleeved on the pressurizing threaded rod 330, the pressurizing nut 320 is in threaded connection with the pressurizing threaded rod 330, and the pressurizing nut 320 is abutted against the pressurizing block 310; the end of the pressure threaded rod 330 remote from the fixed belt loop 340 is connected to the connector 200.
Specifically, the fixing member 300 includes a pressing block 310, a pressing threaded rod 330 and a fixing band 340, when in use, the fixing band 340 is sleeved on the intramedullary nail 500 by medical staff, and then the pressing nut 320 sleeved on the pressing threaded rod 330 is rotated by the medical staff, so that the pressing block 310 can be pressed towards the intramedullary nail 500 by the pressing nut 320, the pressing threaded rod 330 is far away from the intramedullary nail 500, the fixing band 340 is tightened by the pressing block 310, and the intramedullary nail 500 can be tightly fixed by the fixing band 340.
Wherein, one end of the pressurizing threaded rod 330 far away from the fixing belt ring 340 is connected with the connecting piece 200, so that the medical staff can drive the pressurizing threaded rod 330 far away from the long bone 700 through the power piece 400, and further take out the intramedullary nail 500 in the long bone 700 of the patient.
It should be noted that the compression nut 320 is threadedly coupled to the compression threaded rod 330, so that the medical staff can move the compression block 310 toward the intramedullary nail 500 by rotating the compression nut 320, thereby tightening the fixation strap 340 so that the fixation strap 340 can tightly fix the intramedullary nail 500.
Referring to fig. 1 and 2, in an alternative embodiment, the outer wall of the compression block 310 is formed with a groove adapted to the outer wall of the intramedullary nail 500.
Specifically, the outer wall of the pressing block 310 is provided with a groove, and when the pressing block 310 is sleeved on the pressing threaded rod 330, the groove on the pressing block 310 abuts against the intramedullary nail 500, so that when the pressing nut 320 drives the pressing block 310, the pressing block 310 cannot rotate randomly.
Referring to fig. 1 and 2, in an alternative embodiment, the number of the fixing members 300 is two.
Specifically, the two fixing members 300 are provided to increase the contact area between the intramedullary nail extraction device provided by the present embodiment and the intramedullary nail 500, so that the medical staff can extract the intramedullary nail 500 better.
Referring to fig. 1 and 2, in an alternative embodiment, the connecting member 200 is a connecting rod.
Specifically, the connecting member 200 is a connecting rod, and the power member 400 and the fixing member 300 are connected together by the connecting rod.
Referring to fig. 1 and 2, in an alternative embodiment, the power member 400 is a power threaded rod.
Specifically, the power piece 400 adopts a power threaded rod, the connecting piece 200 is detachably connected with the power piece 400, and when the intramedullary nail 500 is used, the power threaded rod is arranged on the support frame 100 in a threaded manner, so that the power threaded rod can rotate relative to the support frame 100, and when the power threaded rod is rotated by medical staff, the power threaded rod can move relative to the support frame 100, so that the power threaded rod can drive the fixing piece 300 to extract the intramedullary nail 500.
Referring to fig. 1 and 2, in an alternative embodiment, an annular groove is formed at one end of the power member 400, and an openable and closable snap ring adapted to the annular groove is formed on the connecting member 200.
Specifically, a ring groove is formed at one end of the power element 400, an openable and closable snap ring is arranged on the connecting element 200, when the intramedullary nail is used, medical staff open the snap ring and connect with the ring groove, and then the snap ring is buckled on the ring groove, so that the power element 400 can rotate relative to the connecting element 200, and when the power element 400 is far away from the intramedullary nail 500, the power element 400 can drive the fixing element 300 through the connecting element 200 to pull the intramedullary nail 500 out of the long bone 700 of a patient.
It is pointed out that the medical staff can adjust the locking degree of the snap ring; when a gap exists between the closed snap ring and the ring groove, the ring groove on the power piece 400 can rotate relative to the snap ring on the connecting piece 200; when the snap ring is tightly abutted with the ring groove after being closed, the ring groove on the power part 400 can drive the snap ring on the connecting part 200 to synchronously rotate along with the ring groove, so as to meet the requirement of medical staff on rotating the intramedullary nail.
In an alternative of this embodiment, a crank 600 is detachably provided at an end of the power member 400 remote from the connecting rod.
Specifically, a crank 600 is disposed at an end of the power member 400 away from the connecting rod, and the medical staff can conveniently rotate the power member 400 through the crank 600.
It should be noted that medical personnel of different sizes can select the crank 600 with different sizes, thereby facilitating the operation of the medical personnel.
Referring to fig. 1 and 2, in an alternative of the present embodiment, the supporting frame 100 includes a bracket 110 and an adjusting bracket 120; the bracket 110 is U-shaped, and the number of the adjusting brackets 120 is two; the bracket 110 is rotatably connected with the adjusting bracket 120, and a locking member 130 is provided at the connection between the bracket 110 and the adjusting bracket 120.
Specifically, the support frame 100 includes a bracket 110 and two adjusting brackets 120, the two adjusting brackets 120 are respectively connected with one end of the bracket 110 through a locking member 130, the other end of the bracket 110 is provided with a threaded hole, and the power member 400 can be disposed in the threaded hole.
Wherein, two alignment brackets 120 are connected with one end of the bracket 110 through retaining members 130 respectively, thereby making the angle of the alignment brackets 110 and 120, so that the two alignment brackets 120 are all abutted against the long bone 700 of the patient, and ensuring the stability of the support frame 100.
It should be noted that the locking member 130 is arranged to allow the relative rotation of the adjusting bracket 120 and the bracket 110; and both the adjusting bracket 120 and the bracket 110 can be locked and fixed by the locking member 130 so that both the adjusting bracket 120 and the bracket 110 cannot rotate relatively.
Referring to fig. 1 and 2, in an alternative of the present embodiment, an end of the adjusting bracket 120 away from the support 110 is provided with an arc-shaped pad adapted to the outer wall of the long bone 700 of the patient.
Specifically, be provided with the arc pad in the one end of alignment jig 120, form the protection to patient's long bone 700 through the arc pad, avoid alignment jig 120 to cause the injury to the patient.
It should be noted that, the arc-shaped groove of the pressing block 310 contacts with the tail of the intramedullary nail 500, and the pressing nut 320 is used for pressing, because the change of the thread is continuous, the contact surface between the pressing block 310 and the intramedullary nail 500 can be maximized and a larger pressure can be formed, so that the slippage of the pressing block 310 and the fixing belt loop 340 relative to the intramedullary nail 500 can be avoided at the maximum efficiency.
In addition, by using the long bone 700 as a fulcrum, the crank 600 has a longer moment arm relative to the tail end of the intramedullary nail 500, the same force can generate a larger moment, and the medical staff can select the crank 600 with a proper moment arm according to the self requirement, so that the moment required for taking out the intramedullary nail 500 can be achieved with a smaller force for the medical staff.
Moreover, the contact surface of the adjusting frame 120 with the long bone 700 is arc-shaped, and the contact surface is enlarged by adjusting the angle of the adjusting frame 120, so as to avoid the damage of the pressure generated by the reaction force of the extraction intramedullary nail 500 to the long bone 700 and periosteum. Intraoperatively, to avoid lateral or oblique displacement of the long bone 700, an assistant may control the displacement of the long bone 700 on the opposite side of the long bone 700.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (10)
1. An intramedullary nail extraction device, comprising: the intramedullary nail fixing device comprises a support frame (100), a connecting piece (200), a fixing piece (300) for fixing the tail part of the intramedullary nail (500) and a power piece (400);
the power piece (400) is detachably arranged on the support frame (100);
the power part (400) is connected with the fixing part (300) through a connecting part (200), so that the power part (400) drives the fixing part (300) to extract the intramedullary nail (500).
2. The intramedullary nail extraction device according to claim 1, wherein the fixation member (300) comprises a compression block (310), a compression nut (320), a compression threaded rod (330) and a fixation strap loop (340) for sleeving the tail of the intramedullary nail (500);
the fixed belt ring (340) is fixedly arranged at the end part of the pressurizing threaded rod (330), the pressurizing block (310) is sleeved on the pressurizing threaded rod (330), the pressurizing nut (320) is in threaded connection with the pressurizing threaded rod (330), and the pressurizing nut (320) is abutted against the pressurizing block (310);
one end of the pressurizing threaded rod (330) far away from the fixed belt ring (340) is connected with the connecting piece (200).
3. The intramedullary nail extraction device according to claim 2, wherein the outer wall of the compression block (310) is provided with a groove adapted to the outer wall of the intramedullary nail (500).
4. The intramedullary nail extraction device according to claim 2, wherein the number of the fixation members (300) is two.
5. The intramedullary nail extraction device of claim 1, wherein the connector (200) employs a connecting rod.
6. The intramedullary nail extraction device of claim 5, wherein the power member (400) is a power threaded rod.
7. The intramedullary nail extraction device according to claim 6, wherein one end of the power element (400) is provided with a ring groove, and the connecting element (200) is provided with an openable and closable snap ring matched with the ring groove.
8. The intramedullary nail extraction device according to claim 7, wherein a crank (600) is removably provided at an end of the power element (400) distal to the connecting rod.
9. The intramedullary nail extraction device according to any one of claims 1 to 8, wherein the support frame (100) comprises a bracket (110) and an adjustment frame (120);
the support (110) is U-shaped, and the number of the adjusting frames (120) is two;
the bracket (110) is rotatably connected with the adjusting frame (120), and a locking piece (130) is arranged at the joint of the bracket (110) and the adjusting frame (120).
10. The intramedullary nail extraction device according to claim 9, characterized in that an end of the adjustment bracket (120) remote from the bracket (110) is provided with an arc-shaped pad adapted to an outer wall of the patient's long bone (700).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120769124.1U CN214857374U (en) | 2021-04-14 | 2021-04-14 | Intramedullary nail taking-out device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120769124.1U CN214857374U (en) | 2021-04-14 | 2021-04-14 | Intramedullary nail taking-out device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214857374U true CN214857374U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120769124.1U Active CN214857374U (en) | 2021-04-14 | 2021-04-14 | Intramedullary nail taking-out device |
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|---|---|
| CN (1) | CN214857374U (en) |
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- 2021-04-14 CN CN202120769124.1U patent/CN214857374U/en active Active
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